Re: [PATCH] drm/bridge: dw-hdmi: fix EDID parsing

[Jani Nikula <jani.nikula@xxxxxxxxxxxxxxx>]

On Thu, 09 Nov 2017, Luís Mendes <luis.p.mendes@xxxxxxxxx> wrote:
> Hi Jani,
>
> Adding a D to the video= kernel parameters, allows the EDID file to be
> read indeed.

Cool, thanks for testing! I think we should keep that requirement,
because in a lot of cases DDC probe does work, and can be used for
detection, but then the actual EDID needs to be replaced.

BR,
Jani.

>
> [    7.448779] [drm] Got external EDID base block and 1 extension from
> "edid/ktc_edid.bin" for connector "HDMI-A-1"
>
> I'm having a lot of kernel warnings with stack trace dumps. I know it
> hasn't to do with this directly but drm/drm_vblank.c is creating a lot
> of messages...
>
> dmesg follows.
>
> BR,
> Luís
>
> [    7.261659] dwhdmi-imx 120000.hdmi: Detected HDMI TX controller
> v1.30a with HDCP (DWC HDMI 3D TX PHY)
> [    7.275060] imx-spdif sound-spdif: snd-soc-dummy-dai <->
> 2004000.spdif mapping ok
> [    7.314436] hdmi_set_clk_regenerator:521: dwhdmi-imx 120000.hdmi:
> hdmi_set_clk_regenerator: fs=48000Hz ftdms=74.250MHz N=6144 cts=74250
> [    7.314976] dw_hdmi_irq:2146: dwhdmi-imx 120000.hdmi: EVENT=plugin
> [    7.316854] [drm] forcing HDMI-A-1 connector on
> [    7.317457] imx-drm display-subsystem: bound 120000.hdmi (ops
> dw_hdmi_imx_ops [dw_hdmi_imx])
> [    7.387497] fsl-asoc-card sound: sgtl5000 <-> 2028000.ssi mapping ok
> [    7.448779] [drm] Got external EDID base block and 1 extension from
> "edid/ktc_edid.bin" for connector "HDMI-A-1"
> [    7.448970] dw_hdmi_connector_get_modes:1906: dwhdmi-imx
> 120000.hdmi: got edid: width[48] x height[27]
> [    7.646263] random: crng init done
> [    7.922507] ------------[ cut here ]------------
> [    7.922581] WARNING: CPU: 0 PID: 224 at
> drivers/gpu/drm/drm_vblank.c:303
> drm_crtc_accurate_vblank_count+0x80/0x84
> [    7.922593] This function requires support for accurate vblank timestamps.
> [    7.922601] Modules linked in: snd_soc_imx_sgtl5000
> snd_soc_fsl_asoc_card snd_soc_imx_spdif snd_ac97_codec btsdio brcmfmac
> brcmutil coda videobuf2_dma_contig imx_vdoa v4l2_mem2mem
> videobuf2_vmalloc videobuf2_memops dw_hdmi_imx dw_hdmi cec imxdrm(+)
> etnaviv imx_ipu_v3 binfmt_misc parport_pc ppdev lp parport
> [    7.922787] CPU: 0 PID: 224 Comm: systemd-udevd Tainted: G        W
>       4.14.0-rc7-gd65d313-dirty #1
> [    7.922796] Hardware name: Freescale i.MX6 Quad/DualLite (Device Tree)
> [    7.922809] Backtrace:
> [    7.922839] [<c010d558>] (dump_backtrace) from [<c010d838>]
> (show_stack+0x18/0x1c)
> [    7.922847]  r7:c106eed0 r6:00000000 r5:600f0093 r4:c106eed0
> [    7.922863] [<c010d820>] (show_stack) from [<c09ff10c>]
> (dump_stack+0xac/0xd8)
> [    7.922881] [<c09ff060>] (dump_stack) from [<c0122d78>] (__warn+0xec/0x104)
> [    7.922890]  r10:ed481c00 r9:c0527bd8 r8:0000012f r7:00000009
> r6:c0d4fc08 r5:00000000
> [    7.922895]  r4:edd59688 r3:00000000
> [    7.922906] [<c0122c8c>] (__warn) from [<c0122dd0>]
> (warn_slowpath_fmt+0x40/0x48)
> [    7.922914]  r9:edccebe0 r8:00000001 r7:edcce800 r6:00000000
> r5:edcce800 r4:c0d50064
> [    7.922924] [<c0122d94>] (warn_slowpath_fmt) from [<c0527bd8>]
> (drm_crtc_accurate_vblank_count+0x80/0x84)
> [    7.922930]  r3:00000000 r2:c0d50064
> [    7.922934]  r4:edcce800
> [    7.922943] [<c0527b58>] (drm_crtc_accurate_vblank_count) from
> [<c052800c>] (drm_crtc_arm_vblank_event+0x30/0x64)
> [    7.922950]  r7:edcce800 r6:00000001 r5:edcce800 r4:ee34de00
> [    7.922995] [<c0527fdc>] (drm_crtc_arm_vblank_event) from
> [<bf0889bc>] (ipu_crtc_atomic_begin+0x50/0x80 [imxdrm])
> [    7.923001]  r5:eeb12f80 r4:edccf818
> [    7.923031] [<bf08896c>] (ipu_crtc_atomic_begin [imxdrm]) from
> [<c04fa720>] (drm_atomic_helper_commit_planes+0x8c/0x2a8)
> [    7.923037]  r5:eeb12f80 r4:00000018
> [    7.923057] [<c04fa694>] (drm_atomic_helper_commit_planes) from
> [<bf0881a4>] (imx_drm_atomic_commit_tail+0x30/0x144 [imxdrm])
> [    7.923066]  r10:ed481c00 r9:edccebe0 r8:ed422eb8 r7:edcce800
> r6:eeb12f80 r5:bf08b088
> [    7.923070]  r4:eeb12f80
> [    7.923103] [<bf088174>] (imx_drm_atomic_commit_tail [imxdrm]) from
> [<c04feb1c>] (commit_tail+0x48/0x8c)
> [    7.923128]  r10:ed481c00 r9:edccebe0 r8:ed422eb8 r7:edcce800
> r6:00000000 r5:bf08b088
> [    7.923143]  r4:eeb12f80 r3:bf088174
> [    7.923168] [<c04fead4>] (commit_tail) from [<c04fecb8>]
> (drm_atomic_helper_commit+0x140/0x148)
> [    7.923180]  r5:00000000 r4:eeb12f80
> [    7.923199] [<c04feb78>] (drm_atomic_helper_commit) from
> [<c051c138>] (drm_atomic_commit+0x54/0x60)
> [    7.923207]  r7:eeb12f80 r6:edcce800 r5:eeb12f80 r4:00000000
> [    7.923225] [<c051c0e4>] (drm_atomic_commit) from [<c0501698>]
> (restore_fbdev_mode_atomic+0x19c/0x1f8)
> [    7.923236]  r7:eeb12f80 r6:00000001 r5:0000003f r4:000000a0
> [    7.923248] [<c05014fc>] (restore_fbdev_mode_atomic) from
> [<c0501724>] (restore_fbdev_mode+0x30/0x168)
> [    7.923256]  r10:ed4cee00 r9:c17e5a70 r8:00000000 r7:ed481c00
> r6:c17e5bc8 r5:ed481cd0
> [    7.923260]  r4:ed481c00
> [    7.923274] [<c05016f4>] (restore_fbdev_mode) from [<c0504740>]
> (drm_fb_helper_restore_fbdev_mode_unlocked.part.8+0x28/0x7c)
> [    7.923282]  r10:ed4cee00 r9:c17e5a70 r8:00000000 r7:c1022ed8
> r6:c17e5bc8 r5:ed481cd0
> [    7.923286]  r4:ed481c00
> [    7.923308] [<c0504718>]
> (drm_fb_helper_restore_fbdev_mode_unlocked.part.8) from [<c0504834>]
> (drm_fb_helper_set_par+0x5c/0x8c)
> [    7.923325]  r7:c1022ed8 r6:c17e5bc8 r5:ed657c00 r4:00000000
> [    7.923354] [<c05047d8>] (drm_fb_helper_set_par) from [<c0496768>]
> (fbcon_init+0x564/0x5b0)
> [    7.923370]  r5:ed657c00 r4:ee808c00
> [    7.923394] [<c0496204>] (fbcon_init) from [<c04daae8>]
> (visual_init+0xcc/0x114)
> [    7.923405]  r10:00000001 r9:ee808c00 r8:c17ebfb4 r7:00000000
> r6:ee808e08 r5:00000000
> [    7.923410]  r4:ee808c00
> [    7.923435] [<c04daa1c>] (visual_init) from [<c04dc12c>]
> (do_bind_con_driver+0x1b4/0x394)
> [    7.923453]  r7:00000000 r6:00000000 r5:c17ebea0 r4:c0b3e0dc
> [    7.923475] [<c04dbf78>] (do_bind_con_driver) from [<c04dc700>]
> (do_take_over_console+0x15c/0x1c4)
> [    7.923489]  r10:00000001 r9:0000003e r8:00000000 r7:c17ebeb0
> r6:00000000 r5:00000000
> [    7.923493]  r4:00000000
> [    7.923503] [<c04dc5a4>] (do_take_over_console) from [<c0496830>]
> (do_fbcon_takeover+0x7c/0xd4)
> [    7.923512]  r10:ed657e94 r9:ed657c00 r8:00000000 r7:00000000
> r6:00000005 r5:c17e5a70
> [    7.923516]  r4:c1022ed8
> [    7.923526] [<c04967b4>] (do_fbcon_takeover) from [<c049a2d0>]
> (fbcon_event_notify+0x8c8/0x908)
> [    7.923531]  r5:c1022ed8 r4:c17e5a70
> [    7.923547] [<c0499a08>] (fbcon_event_notify) from [<c0147b5c>]
> (notifier_call_chain+0x4c/0x8c)
> [    7.923556]  r10:ed657e94 r9:ed657c0c r8:00000000 r7:00000000
> r6:00000005 r5:edd59ab0
> [    7.923559]  r4:ffffffff
> [    7.923572] [<c0147b10>] (notifier_call_chain) from [<c0147fec>]
> (__blocking_notifier_call_chain+0x50/0x68)
> [    7.923581]  r9:ed657c0c r8:c17e5a38 r7:ffffffff r6:edd59ab0
> r5:c1022cfc r4:00000005
> [    7.923591] [<c0147f9c>] (__blocking_notifier_call_chain) from
> [<c0148024>] (blocking_notifier_call_chain+0x20/0x28)
> [    7.923599]  r7:00000000 r6:c1007f10 r5:ed657c00 r4:c1007f10
> [    7.923616] [<c0148004>] (blocking_notifier_call_chain) from
> [<c048b8fc>] (fb_notifier_call_chain+0x20/0x24)
> [    7.923627] [<c048b8dc>] (fb_notifier_call_chain) from [<c048d8a0>]
> (register_framebuffer+0x1f8/0x2ac)
> [    7.923642] [<c048d6a8>] (register_framebuffer) from [<c05043f4>]
> (__drm_fb_helper_initial_config_and_unlock+0x220/0x414)
> [    7.923650]  r10:bf08855c r9:00000000 r8:00000000 r7:c1031728
> r6:edcce800 r5:ed657c00
> [    7.923654]  r4:ed481c00
> [    7.923667] [<c05041d4>]
> (__drm_fb_helper_initial_config_and_unlock) from [<c0504628>]
> (drm_fb_helper_initial_config+0x40/0x44)
> [    7.923675]  r10:bf08855c r9:c1031d28 r8:00000010 r7:c0b450e0
> r6:edcce800 r5:00000010
> [    7.923688]  r4:ed481c00
> [    7.923715] [<c05045e8>] (drm_fb_helper_initial_config) from
> [<c0504a9c>] (drm_fbdev_cma_init_with_funcs+0x88/0x100)
> [    7.923731]  r5:00000000 r4:ed481c00
> [    7.923758] [<c0504a14>] (drm_fbdev_cma_init_with_funcs) from
> [<c0504b28>] (drm_fbdev_cma_init+0x14/0x1c)
> [    7.923779]  r9:c1031d28 r8:00000000 r7:ed717750 r6:eea12010
> r5:bf08c000 r4:edcce800
> [    7.923818] [<c0504b14>] (drm_fbdev_cma_init) from [<bf0883e4>]
> (imx_drm_bind+0xf4/0x178 [imxdrm])
> [    7.923853] [<bf0882f0>] (imx_drm_bind [imxdrm]) from [<c0532e7c>]
> (try_to_bring_up_master+0x25c/0x2dc)
> [    7.923862]  r9:c1031d28 r8:ed717250 r7:ed717280 r6:00000008
> r5:000000a0 r4:ed4a9340
> [    7.923874] [<c0532c20>] (try_to_bring_up_master) from [<c0532fac>]
> (component_add+0xb0/0x178)
> [    7.923883]  r10:00000000 r9:bf08c160 r8:00000000 r7:ed717580
> r6:c1031d20 r5:00000000
> [    7.923887]  r4:ed717280
> [    7.923910] [<c0532efc>] (component_add) from [<bf088f2c>]
> (ipu_drm_probe+0x80/0xa4 [imxdrm])
> [    7.923920]  r9:bf08c160 r8:00000000 r7:fffffdfb r6:bf08c160
> r5:ed489810 r4:ed4899e0
> [    7.923950] [<bf088eac>] (ipu_drm_probe [imxdrm]) from [<c053b140>]
> (platform_drv_probe+0x58/0xb8)
> [    7.923956]  r5:ffffffed r4:ed489810
> [    7.923970] [<c053b0e8>] (platform_drv_probe) from [<c053926c>]
> (driver_probe_device+0x2d0/0x47c)
> [    7.923977]  r7:c17ee208 r6:c1075608 r5:c17ee204 r4:ed489810
> [    7.923987] [<c0538f9c>] (driver_probe_device) from [<c0539524>]
> (__driver_attach+0x10c/0x128)
> [    7.923996]  r10:bf08c280 r9:c053b0e8 r8:00000000 r7:c1075530
> r6:bf08c160 r5:ed489844
> [    7.924000]  r4:ed489810
> [    7.924011] [<c0539418>] (__driver_attach) from [<c0537160>]
> (bus_for_each_dev+0x70/0xa4)
> [    7.924017]  r7:c1075530 r6:c0539418 r5:bf08c160 r4:00000000
> [    7.924027] [<c05370f0>] (bus_for_each_dev) from [<c0538a58>]
> (driver_attach+0x24/0x28)
> [    7.924033]  r6:c1032490 r5:eddafb00 r4:bf08c160
> [    7.924043] [<c0538a34>] (driver_attach) from [<c0538438>]
> (bus_add_driver+0x1ac/0x26c)
> [    7.924053] [<c053828c>] (bus_add_driver) from [<c0539f80>]
> (driver_register+0x80/0xfc)
> [    7.924062]  r8:c053b0a4 r7:c053aa50 r6:c1075830 r5:00000001 r4:bf08c160
> [    7.924073] [<c0539f00>] (driver_register) from [<c053b2ac>]
> (__platform_register_drivers+0x80/0x164)
> [    7.924078]  r5:00000001 r4:bf08b090
> [    7.924107] [<c053b22c>] (__platform_register_drivers) from
> [<bf090020>] (imx_drm_init+0x20/0x1000 [imxdrm])
> [    7.924119]  r10:edd59f40 r9:edfa0ff0 r8:bf08c2c8 r7:eddc8080
> r6:00000000 r5:bf090000
> [    7.924124]  r4:ffffe000
> [    7.924153] [<bf090000>] (imx_drm_init [imxdrm]) from [<c0101ba4>]
> (do_one_initcall+0x4c/0x174)
> [    7.924167] [<c0101b58>] (do_one_initcall) from [<c01b0880>]
> (do_init_module+0x68/0x1fc)
> [    7.924181]  r9:edfa0ff0 r8:bf08c2c8 r6:bf08c280 r5:00000001 r4:bf08c280
> [    7.924198] [<c01b0818>] (do_init_module) from [<c01af89c>]
> (load_module+0x2064/0x270c)
> [    7.924206]  r7:edfa0fc0 r6:bf08c280 r5:00000001 r4:00000001
> [    7.924217] [<c01ad838>] (load_module) from [<c01b01c4>]
> (SyS_finit_module+0xbc/0xf8)
> [    7.924225]  r10:00000000 r9:edd58000 r8:c0108da4 r7:0000017b
> r6:b6d73d40 r5:0000000f
> [    7.924229]  r4:00000000
> [    7.924243] [<c01b0108>] (SyS_finit_module) from [<c0108be0>]
> (ret_fast_syscall+0x0/0x28)
> [    7.924249]  r6:00000000 r5:beb9b9f4 r4:8a440200
> [    7.924254] ---[ end trace b61d7b1acd1ba22e ]---
> [    8.016819] dw_hdmi_setup:1681: dwhdmi-imx 120000.hdmi: CEA mode used vic=16
> [    8.016906] hdmi_av_composer:1495: dwhdmi-imx 120000.hdmi: final
> pixclk = 148500000
> [    8.017103] dw_hdmi_phy_power_off:1096: dwhdmi-imx 120000.hdmi: PHY
> powered down in 0 iterations
> [    8.029601] dw_hdmi_phy_power_on:1133: dwhdmi-imx 120000.hdmi: PHY
> PLL locked 1 iterations
> [    8.029631] dw_hdmi_phy_power_off:1096: dwhdmi-imx 120000.hdmi: PHY
> powered down in 0 iterations
> [    8.202629] dw_hdmi_phy_power_on:1133: dwhdmi-imx 120000.hdmi: PHY
> PLL locked 1 iterations
> [    8.202706] dw_hdmi_setup:1729: dwhdmi-imx 120000.hdmi: sink has
> audio support
> [    8.202841] hdmi_set_clk_regenerator:521: dwhdmi-imx 120000.hdmi:
> hdmi_set_clk_regenerator: fs=48000Hz ftdms=148.500MHz N=6144
> cts=148500
> [    8.202961] dw_hdmi_setup:1738: dwhdmi-imx 120000.hdmi:
> dw_hdmi_setup HDMI mode
> [    8.204751] ------------[ cut here ]------------
> [    8.204788] WARNING: CPU: 0 PID: 224 at
> drivers/gpu/drm/drm_vblank.c:303
> drm_crtc_accurate_vblank_count+0x80/0x84
> [    8.204794] This function requires support for accurate vblank timestamps.
> [    8.204799] Modules linked in: snd_soc_imx_sgtl5000
> snd_soc_fsl_asoc_card snd_soc_imx_spdif snd_ac97_codec btsdio brcmfmac
> brcmutil coda videobuf2_dma_contig imx_vdoa v4l2_mem2mem
> videobuf2_vmalloc videobuf2_memops dw_hdmi_imx dw_hdmi cec imxdrm(+)
> etnaviv imx_ipu_v3 binfmt_misc parport_pc ppdev lp parport
> [    8.204902] CPU: 0 PID: 224 Comm: systemd-udevd Tainted: G        W
>       4.14.0-rc7-gd65d313-dirty #1
> [    8.204907] Hardware name: Freescale i.MX6 Quad/DualLite (Device Tree)
> [    8.204912] Backtrace:
> [    8.204933] [<c010d558>] (dump_backtrace) from [<c010d838>]
> (show_stack+0x18/0x1c)
> [    8.204941]  r7:c106eed0 r6:00000000 r5:600f0093 r4:c106eed0
> [    8.204976] [<c010d820>] (show_stack) from [<c09ff10c>]
> (dump_stack+0xac/0xd8)
> [    8.205017] [<c09ff060>] (dump_stack) from [<c0122d78>] (__warn+0xec/0x104)
> [    8.205041]  r10:ed481c00 r9:c0527bd8 r8:0000012f r7:00000009
> r6:c0d4fc08 r5:00000000
> [    8.205056]  r4:edd59520 r3:00000000
> [    8.205070] [<c0122c8c>] (__warn) from [<c0122dd0>]
> (warn_slowpath_fmt+0x40/0x48)
> [    8.205079]  r9:edccebe0 r8:00000001 r7:edcce800 r6:00000000
> r5:edcce800 r4:c0d50064
> [    8.205090] [<c0122d94>] (warn_slowpath_fmt) from [<c0527bd8>]
> (drm_crtc_accurate_vblank_count+0x80/0x84)
> [    8.205096]  r3:00000000 r2:c0d50064
> [    8.205100]  r4:edcce800
> [    8.205111] [<c0527b58>] (drm_crtc_accurate_vblank_count) from
> [<c052800c>] (drm_crtc_arm_vblank_event+0x30/0x64)
> [    8.205118]  r7:edcce800 r6:00000001 r5:edcce800 r4:ed41cb80
> [    8.205161] [<c0527fdc>] (drm_crtc_arm_vblank_event) from
> [<bf0889bc>] (ipu_crtc_atomic_begin+0x50/0x80 [imxdrm])
> [    8.205167]  r5:ee8dfb00 r4:edccf818
> [    8.205201] [<bf08896c>] (ipu_crtc_atomic_begin [imxdrm]) from
> [<c04fa720>] (drm_atomic_helper_commit_planes+0x8c/0x2a8)
> [    8.205208]  r5:ee8dfb00 r4:00000018
> [    8.205228] [<c04fa694>] (drm_atomic_helper_commit_planes) from
> [<bf0881a4>] (imx_drm_atomic_commit_tail+0x30/0x144 [imxdrm])
> [    8.205237]  r10:ed481c00 r9:edccebe0 r8:ed422eb8 r7:edcce800
> r6:ee8dfb00 r5:bf08b088
> [    8.205240]  r4:ee8dfb00
> [    8.205264] [<bf088174>] (imx_drm_atomic_commit_tail [imxdrm]) from
> [<c04feb1c>] (commit_tail+0x48/0x8c)
> [    8.205273]  r10:ed481c00 r9:edccebe0 r8:ed422eb8 r7:edcce800
> r6:00000000 r5:bf08b088
> [    8.205278]  r4:ee8dfb00 r3:bf088174
> [    8.205288] [<c04fead4>] (commit_tail) from [<c04fecb8>]
> (drm_atomic_helper_commit+0x140/0x148)
> [    8.205294]  r5:00000000 r4:ee8dfb00
> [    8.205309] [<c04feb78>] (drm_atomic_helper_commit) from
> [<c051c138>] (drm_atomic_commit+0x54/0x60)
> [    8.205315]  r7:ee8dfb00 r6:edcce800 r5:ee8dfb00 r4:00000000
> [    8.205329] [<c051c0e4>] (drm_atomic_commit) from [<c0501698>]
> (restore_fbdev_mode_atomic+0x19c/0x1f8)
> [    8.205336]  r7:ee8dfb00 r6:00000001 r5:0000003f r4:000000a0
> [    8.205347] [<c05014fc>] (restore_fbdev_mode_atomic) from
> [<c05019a4>] (drm_fb_helper_pan_display+0xb0/0x1bc)
> [    8.205356]  r10:00000000 r9:c04feb78 r8:ed657c00 r7:ed4cee1c
> r6:00000000 r5:ed481cd0
> [    8.205359]  r4:ed481c00
> [    8.205378] [<c05018f4>] (drm_fb_helper_pan_display) from
> [<c048bc58>] (fb_pan_display+0xd4/0x140)
> [    8.205387]  r10:00000000 r9:ed4cee00 r8:00000438 r7:00000000
> r6:00000000 r5:ed4cee1c
> [    8.205392]  r4:ed657c00 r3:00000000
> [    8.205405] [<c048bb84>] (fb_pan_display) from [<c049a664>]
> (bit_update_start+0x1c/0x38)
> [    8.205414]  r10:00000000 r9:ed4cee00 r8:c17e5bc8 r7:c17e5a70
> r6:ee808c00 r5:ed657c00
> [    8.205419]  r4:ed4cee00 r3:c049a648
> [    8.205429] [<c049a648>] (bit_update_start) from [<c049934c>]
> (fbcon_switch+0x340/0x558)
> [    8.205434]  r5:ed657c00 r4:ee808dc8
> [    8.205451] [<c049900c>] (fbcon_switch) from [<c04db61c>]
> (redraw_screen+0x150/0x248)
> [    8.205459]  r10:00000000 r9:00000000 r8:fffffe20 r7:00000001
> r6:00000000 r5:00000000
> [    8.205463]  r4:ee808c00
> [    8.205473] [<c04db4cc>] (redraw_screen) from [<c0496174>]
> (fbcon_prepare_logo+0x354/0x3e4)
> [    8.205481]  r8:fffffe20 r7:00000043 r6:00000000 r5:00000000 r4:ee808c00
> [    8.205490] [<c0495e20>] (fbcon_prepare_logo) from [<c04965d4>]
> (fbcon_init+0x3d0/0x5b0)
> [    8.205498]  r10:ed4cee00 r9:c17e5a70 r8:c17e5bc8 r7:c1022ed8
> r6:c17e5bc8 r5:ed657c00
> [    8.205502]  r4:ee808c00
> [    8.205512] [<c0496204>] (fbcon_init) from [<c04daae8>]
> (visual_init+0xcc/0x114)
> [    8.205520]  r10:00000001 r9:ee808c00 r8:c17ebfb4 r7:00000000
> r6:ee808e08 r5:00000000
> [    8.205524]  r4:ee808c00
> [    8.205534] [<c04daa1c>] (visual_init) from [<c04dc12c>]
> (do_bind_con_driver+0x1b4/0x394)
> [    8.205543]  r7:00000000 r6:00000000 r5:c17ebea0 r4:c0b3e0dc
> [    8.205567] [<c04dbf78>] (do_bind_con_driver) from [<c04dc700>]
> (do_take_over_console+0x15c/0x1c4)
> [    8.205592]  r10:00000001 r9:0000003e r8:00000000 r7:c17ebeb0
> r6:00000000 r5:00000000
> [    8.205607]  r4:00000000
> [    8.205631] [<c04dc5a4>] (do_take_over_console) from [<c0496830>]
> (do_fbcon_takeover+0x7c/0xd4)
> [    8.205651]  r10:ed657e94 r9:ed657c00 r8:00000000 r7:00000000
> r6:00000005 r5:c17e5a70
> [    8.205656]  r4:c1022ed8
> [    8.205670] [<c04967b4>] (do_fbcon_takeover) from [<c049a2d0>]
> (fbcon_event_notify+0x8c8/0x908)
> [    8.205676]  r5:c1022ed8 r4:c17e5a70
> [    8.205697] [<c0499a08>] (fbcon_event_notify) from [<c0147b5c>]
> (notifier_call_chain+0x4c/0x8c)
> [    8.205706]  r10:ed657e94 r9:ed657c0c r8:00000000 r7:00000000
> r6:00000005 r5:edd59ab0
> [    8.205711]  r4:ffffffff
> [    8.205722] [<c0147b10>] (notifier_call_chain) from [<c0147fec>]
> (__blocking_notifier_call_chain+0x50/0x68)
> [    8.205731]  r9:ed657c0c r8:c17e5a38 r7:ffffffff r6:edd59ab0
> r5:c1022cfc r4:00000005
> [    8.205742] [<c0147f9c>] (__blocking_notifier_call_chain) from
> [<c0148024>] (blocking_notifier_call_chain+0x20/0x28)
> [    8.205749]  r7:00000000 r6:c1007f10 r5:ed657c00 r4:c1007f10
> [    8.205764] [<c0148004>] (blocking_notifier_call_chain) from
> [<c048b8fc>] (fb_notifier_call_chain+0x20/0x24)
> [    8.205775] [<c048b8dc>] (fb_notifier_call_chain) from [<c048d8a0>]
> (register_framebuffer+0x1f8/0x2ac)
> [    8.205795] [<c048d6a8>] (register_framebuffer) from [<c05043f4>]
> (__drm_fb_helper_initial_config_and_unlock+0x220/0x414)
> [    8.205803]  r10:bf08855c r9:00000000 r8:00000000 r7:c1031728
> r6:edcce800 r5:ed657c00
> [    8.205807]  r4:ed481c00
> [    8.205821] [<c05041d4>]
> (__drm_fb_helper_initial_config_and_unlock) from [<c0504628>]
> (drm_fb_helper_initial_config+0x40/0x44)
> [    8.205829]  r10:bf08855c r9:c1031d28 r8:00000010 r7:c0b450e0
> r6:edcce800 r5:00000010
> [    8.205833]  r4:ed481c00
> [    8.205846] [<c05045e8>] (drm_fb_helper_initial_config) from
> [<c0504a9c>] (drm_fbdev_cma_init_with_funcs+0x88/0x100)
> [    8.205851]  r5:00000000 r4:ed481c00
> [    8.205862] [<c0504a14>] (drm_fbdev_cma_init_with_funcs) from
> [<c0504b28>] (drm_fbdev_cma_init+0x14/0x1c)
> [    8.205870]  r9:c1031d28 r8:00000000 r7:ed717750 r6:eea12010
> r5:bf08c000 r4:edcce800
> [    8.205905] [<c0504b14>] (drm_fbdev_cma_init) from [<bf0883e4>]
> (imx_drm_bind+0xf4/0x178 [imxdrm])
> [    8.205937] [<bf0882f0>] (imx_drm_bind [imxdrm]) from [<c0532e7c>]
> (try_to_bring_up_master+0x25c/0x2dc)
> [    8.205946]  r9:c1031d28 r8:ed717250 r7:ed717280 r6:00000008
> r5:000000a0 r4:ed4a9340
> [    8.205956] [<c0532c20>] (try_to_bring_up_master) from [<c0532fac>]
> (component_add+0xb0/0x178)
> [    8.205964]  r10:00000000 r9:bf08c160 r8:00000000 r7:ed717580
> r6:c1031d20 r5:00000000
> [    8.205969]  r4:ed717280
> [    8.205990] [<c0532efc>] (component_add) from [<bf088f2c>]
> (ipu_drm_probe+0x80/0xa4 [imxdrm])
> [    8.205999]  r9:bf08c160 r8:00000000 r7:fffffdfb r6:bf08c160
> r5:ed489810 r4:ed4899e0
> [    8.206024] [<bf088eac>] (ipu_drm_probe [imxdrm]) from [<c053b140>]
> (platform_drv_probe+0x58/0xb8)
> [    8.206029]  r5:ffffffed r4:ed489810
> [    8.206041] [<c053b0e8>] (platform_drv_probe) from [<c053926c>]
> (driver_probe_device+0x2d0/0x47c)
> [    8.206048]  r7:c17ee208 r6:c1075608 r5:c17ee204 r4:ed489810
> [    8.206058] [<c0538f9c>] (driver_probe_device) from [<c0539524>]
> (__driver_attach+0x10c/0x128)
> [    8.206066]  r10:bf08c280 r9:c053b0e8 r8:00000000 r7:c1075530
> r6:bf08c160 r5:ed489844
> [    8.206070]  r4:ed489810
> [    8.206080] [<c0539418>] (__driver_attach) from [<c0537160>]
> (bus_for_each_dev+0x70/0xa4)
> [    8.206088]  r7:c1075530 r6:c0539418 r5:bf08c160 r4:00000000
> [    8.206098] [<c05370f0>] (bus_for_each_dev) from [<c0538a58>]
> (driver_attach+0x24/0x28)
> [    8.206104]  r6:c1032490 r5:eddafb00 r4:bf08c160
> [    8.206123] [<c0538a34>] (driver_attach) from [<c0538438>]
> (bus_add_driver+0x1ac/0x26c)
> [    8.206151] [<c053828c>] (bus_add_driver) from [<c0539f80>]
> (driver_register+0x80/0xfc)
> [    8.206169]  r8:c053b0a4 r7:c053aa50 r6:c1075830 r5:00000001 r4:bf08c160
> [    8.206195] [<c0539f00>] (driver_register) from [<c053b2ac>]
> (__platform_register_drivers+0x80/0x164)
> [    8.206209]  r5:00000001 r4:bf08b090
> [    8.206245] [<c053b22c>] (__platform_register_drivers) from
> [<bf090020>] (imx_drm_init+0x20/0x1000 [imxdrm])
> [    8.206255]  r10:edd59f40 r9:edfa0ff0 r8:bf08c2c8 r7:eddc8080
> r6:00000000 r5:bf090000
> [    8.206261]  r4:ffffe000
> [    8.206289] [<bf090000>] (imx_drm_init [imxdrm]) from [<c0101ba4>]
> (do_one_initcall+0x4c/0x174)
> [    8.206307] [<c0101b58>] (do_one_initcall) from [<c01b0880>]
> (do_init_module+0x68/0x1fc)
> [    8.206315]  r9:edfa0ff0 r8:bf08c2c8 r6:bf08c280 r5:00000001 r4:bf08c280
> [    8.206325] [<c01b0818>] (do_init_module) from [<c01af89c>]
> (load_module+0x2064/0x270c)
> [    8.206332]  r7:edfa0fc0 r6:bf08c280 r5:00000001 r4:00000001
> [    8.206342] [<c01ad838>] (load_module) from [<c01b01c4>]
> (SyS_finit_module+0xbc/0xf8)
> [    8.206350]  r10:00000000 r9:edd58000 r8:c0108da4 r7:0000017b
> r6:b6d73d40 r5:0000000f
> [    8.206355]  r4:00000000
> [    8.206370] [<c01b0108>] (SyS_finit_module) from [<c0108be0>]
> (ret_fast_syscall+0x0/0x28)
> [    8.206377]  r6:00000000 r5:beb9b9f4 r4:8a440200
> [    8.206384] ---[ end trace b61d7b1acd1ba22f ]---
> [    8.227802] Console: switching to colour frame buffer device 240x67
> [    8.373246] ------------[ cut here ]------------
> [    8.373296] WARNING: CPU: 0 PID: 224 at
> drivers/gpu/drm/drm_vblank.c:303
> drm_crtc_accurate_vblank_count+0x80/0x84
> [    8.373307] This function requires support for accurate vblank timestamps.
> [    8.373319] Modules linked in: snd_soc_imx_sgtl5000
> snd_soc_fsl_asoc_card snd_soc_imx_spdif snd_ac97_codec btsdio brcmfmac
> brcmutil coda videobuf2_dma_contig imx_vdoa v4l2_mem2mem
> videobuf2_vmalloc videobuf2_memops dw_hdmi_imx dw_hdmi cec imxdrm(+)
> etnaviv imx_ipu_v3 binfmt_misc parport_pc ppdev lp parport
> [    8.373517] CPU: 0 PID: 224 Comm: systemd-udevd Tainted: G        W
>       4.14.0-rc7-gd65d313-dirty #1
> [    8.373522] Hardware name: Freescale i.MX6 Quad/DualLite (Device Tree)
> [    8.373527] Backtrace:
> [    8.373549] [<c010d558>] (dump_backtrace) from [<c010d838>]
> (show_stack+0x18/0x1c)
> [    8.373562]  r7:c106eed0 r6:00000000 r5:600f0193 r4:c106eed0
> [    8.373592] [<c010d820>] (show_stack) from [<c09ff10c>]
> (dump_stack+0xac/0xd8)
> [    8.373630] [<c09ff060>] (dump_stack) from [<c0122d78>] (__warn+0xec/0x104)
> [    8.373657]  r10:ed481c00 r9:c0527bd8 r8:0000012f r7:00000009
> r6:c0d4fc08 r5:00000000
> [    8.373673]  r4:edd595f0 r3:00000000
> [    8.373698] [<c0122c8c>] (__warn) from [<c0122dd0>]
> (warn_slowpath_fmt+0x40/0x48)
> [    8.373718]  r9:edccebe0 r8:00000001 r7:edcce800 r6:00000000
> r5:edcce800 r4:c0d50064
> [    8.373733] [<c0122d94>] (warn_slowpath_fmt) from [<c0527bd8>]
> (drm_crtc_accurate_vblank_count+0x80/0x84)
> [    8.373748]  r3:00000000 r2:c0d50064
> [    8.373762]  r4:edcce800
> [    8.373787] [<c0527b58>] (drm_crtc_accurate_vblank_count) from
> [<c052800c>] (drm_crtc_arm_vblank_event+0x30/0x64)
> [    8.373805]  r7:edcce800 r6:00000001 r5:edcce800 r4:ed41cc80
> [    8.373876] [<c0527fdc>] (drm_crtc_arm_vblank_event) from
> [<bf0889bc>] (ipu_crtc_atomic_begin+0x50/0x80 [imxdrm])
> [    8.373893]  r5:ee8df880 r4:edccf818
> [    8.373942] [<bf08896c>] (ipu_crtc_atomic_begin [imxdrm]) from
> [<c04fa720>] (drm_atomic_helper_commit_planes+0x8c/0x2a8)
> [    8.373951]  r5:ee8df880 r4:00000018
> [    8.373981] [<c04fa694>] (drm_atomic_helper_commit_planes) from
> [<bf0881a4>] (imx_drm_atomic_commit_tail+0x30/0x144 [imxdrm])
> [    8.374009]  r10:ed481c00 r9:edccebe0 r8:ed422eb8 r7:edcce800
> r6:ee8df880 r5:bf08b088
> [    8.374024]  r4:ee8df880
> [    8.374069] [<bf088174>] (imx_drm_atomic_commit_tail [imxdrm]) from
> [<c04feb1c>] (commit_tail+0x48/0x8c)
> [    8.374085]  r10:ed481c00 r9:edccebe0 r8:ed422eb8 r7:edcce800
> r6:00000000 r5:bf08b088
> [    8.374091]  r4:ee8df880 r3:bf088174
> [    8.374102] [<c04fead4>] (commit_tail) from [<c04fecb8>]
> (drm_atomic_helper_commit+0x140/0x148)
> [    8.374110]  r5:00000000 r4:ee8df880
> [    8.374134] [<c04feb78>] (drm_atomic_helper_commit) from
> [<c051c138>] (drm_atomic_commit+0x54/0x60)
> [    8.374152]  r7:ee8df880 r6:edcce800 r5:ee8df880 r4:00000000
> [    8.374183] [<c051c0e4>] (drm_atomic_commit) from [<c0501698>]
> (restore_fbdev_mode_atomic+0x19c/0x1f8)
> [    8.374202]  r7:ee8df880 r6:00000001 r5:0000003f r4:000000a0
> [    8.374221] [<c05014fc>] (restore_fbdev_mode_atomic) from
> [<c05019a4>] (drm_fb_helper_pan_display+0xb0/0x1bc)
> [    8.374240]  r10:00000000 r9:c04feb78 r8:ed657c00 r7:ed4cee1c
> r6:00000000 r5:ed481cd0
> [    8.374253]  r4:ed481c00
> [    8.374293] [<c05018f4>] (drm_fb_helper_pan_display) from
> [<c048bc58>] (fb_pan_display+0xd4/0x140)
> [    8.374314]  r10:00000000 r9:ed4cee00 r8:00000438 r7:00000000
> r6:00000000 r5:ed4cee1c
> [    8.374327]  r4:ed657c00 r3:00000000
> [    8.374343] [<c048bb84>] (fb_pan_display) from [<c049a664>]
> (bit_update_start+0x1c/0x38)
> [    8.374352]  r10:00000000 r9:ed4cee00 r8:c17e5bc8 r7:c17e5a70
> r6:ee808c00 r5:ed657c00
> [    8.374358]  r4:ed4cee00 r3:c049a648
> [    8.374369] [<c049a648>] (bit_update_start) from [<c049934c>]
> (fbcon_switch+0x340/0x558)
> [    8.374374]  r5:ed657c00 r4:ee808dc8
> [    8.374389] [<c049900c>] (fbcon_switch) from [<c04db61c>]
> (redraw_screen+0x150/0x248)
> [    8.374400]  r10:c17ebe94 r9:00000000 r8:c0d3ede8 r7:00000001
> r6:00000000 r5:00000000
> [    8.374413]  r4:ee808c00
> [    8.374436] [<c04db4cc>] (redraw_screen) from [<c04dc234>]
> (do_bind_con_driver+0x2bc/0x394)
> [    8.374447]  r8:c0d3ede8 r7:00000001 r6:00000000 r5:c17ebe94 r4:00000000
> [    8.374461] [<c04dbf78>] (do_bind_con_driver) from [<c04dc700>]
> (do_take_over_console+0x15c/0x1c4)
> [    8.374482]  r10:00000001 r9:0000003e r8:00000000 r7:c17ebeb0
> r6:00000000 r5:00000000
> [    8.374494]  r4:00000000
> [    8.374515] [<c04dc5a4>] (do_take_over_console) from [<c0496830>]
> (do_fbcon_takeover+0x7c/0xd4)
> [    8.374526]  r10:ed657e94 r9:ed657c00 r8:00000000 r7:00000000
> r6:00000005 r5:c17e5a70
> [    8.374531]  r4:c1022ed8
> [    8.374541] [<c04967b4>] (do_fbcon_takeover) from [<c049a2d0>]
> (fbcon_event_notify+0x8c8/0x908)
> [    8.374547]  r5:c1022ed8 r4:c17e5a70
> [    8.374563] [<c0499a08>] (fbcon_event_notify) from [<c0147b5c>]
> (notifier_call_chain+0x4c/0x8c)
> [    8.374571]  r10:ed657e94 r9:ed657c0c r8:00000000 r7:00000000
> r6:00000005 r5:edd59ab0
> [    8.374575]  r4:ffffffff
> [    8.374587] [<c0147b10>] (notifier_call_chain) from [<c0147fec>]
> (__blocking_notifier_call_chain+0x50/0x68)
> [    8.374595]  r9:ed657c0c r8:c17e5a38 r7:ffffffff r6:edd59ab0
> r5:c1022cfc r4:00000005
> [    8.374605] [<c0147f9c>] (__blocking_notifier_call_chain) from
> [<c0148024>] (blocking_notifier_call_chain+0x20/0x28)
> [    8.374612]  r7:00000000 r6:c1007f10 r5:ed657c00 r4:c1007f10
> [    8.374624] [<c0148004>] (blocking_notifier_call_chain) from
> [<c048b8fc>] (fb_notifier_call_chain+0x20/0x24)
> [    8.374650] [<c048b8dc>] (fb_notifier_call_chain) from [<c048d8a0>]
> (register_framebuffer+0x1f8/0x2ac)
> [    8.374680] [<c048d6a8>] (register_framebuffer) from [<c05043f4>]
> (__drm_fb_helper_initial_config_and_unlock+0x220/0x414)
> [    8.374701]  r10:bf08855c r9:00000000 r8:00000000 r7:c1031728
> r6:edcce800 r5:ed657c00
> [    8.374715]  r4:ed481c00
> [    8.374730] [<c05041d4>]
> (__drm_fb_helper_initial_config_and_unlock) from [<c0504628>]
> (drm_fb_helper_initial_config+0x40/0x44)
> [    8.374739]  r10:bf08855c r9:c1031d28 r8:00000010 r7:c0b450e0
> r6:edcce800 r5:00000010
> [    8.374744]  r4:ed481c00
> [    8.374762] [<c05045e8>] (drm_fb_helper_initial_config) from
> [<c0504a9c>] (drm_fbdev_cma_init_with_funcs+0x88/0x100)
> [    8.374778]  r5:00000000 r4:ed481c00
> [    8.374804] [<c0504a14>] (drm_fbdev_cma_init_with_funcs) from
> [<c0504b28>] (drm_fbdev_cma_init+0x14/0x1c)
> [    8.374825]  r9:c1031d28 r8:00000000 r7:ed717750 r6:eea12010
> r5:bf08c000 r4:edcce800
> [    8.374868] [<c0504b14>] (drm_fbdev_cma_init) from [<bf0883e4>]
> (imx_drm_bind+0xf4/0x178 [imxdrm])
> [    8.374903] [<bf0882f0>] (imx_drm_bind [imxdrm]) from [<c0532e7c>]
> (try_to_bring_up_master+0x25c/0x2dc)
> [    8.374913]  r9:c1031d28 r8:ed717250 r7:ed717280 r6:00000008
> r5:000000a0 r4:ed4a9340
> [    8.374923] [<c0532c20>] (try_to_bring_up_master) from [<c0532fac>]
> (component_add+0xb0/0x178)
> [    8.374934]  r10:00000000 r9:bf08c160 r8:00000000 r7:ed717580
> r6:c1031d20 r5:00000000
> [    8.374938]  r4:ed717280
> [    8.374960] [<c0532efc>] (component_add) from [<bf088f2c>]
> (ipu_drm_probe+0x80/0xa4 [imxdrm])
> [    8.374971]  r9:bf08c160 r8:00000000 r7:fffffdfb r6:bf08c160
> r5:ed489810 r4:ed4899e0
> [    8.374999] [<bf088eac>] (ipu_drm_probe [imxdrm]) from [<c053b140>]
> (platform_drv_probe+0x58/0xb8)
> [    8.375004]  r5:ffffffed r4:ed489810
> [    8.375015] [<c053b0e8>] (platform_drv_probe) from [<c053926c>]
> (driver_probe_device+0x2d0/0x47c)
> [    8.375022]  r7:c17ee208 r6:c1075608 r5:c17ee204 r4:ed489810
> [    8.375034] [<c0538f9c>] (driver_probe_device) from [<c0539524>]
> (__driver_attach+0x10c/0x128)
> [    8.375042]  r10:bf08c280 r9:c053b0e8 r8:00000000 r7:c1075530
> r6:bf08c160 r5:ed489844
> [    8.375046]  r4:ed489810
> [    8.375056] [<c0539418>] (__driver_attach) from [<c0537160>]
> (bus_for_each_dev+0x70/0xa4)
> [    8.375063]  r7:c1075530 r6:c0539418 r5:bf08c160 r4:00000000
> [    8.375073] [<c05370f0>] (bus_for_each_dev) from [<c0538a58>]
> (driver_attach+0x24/0x28)
> [    8.375079]  r6:c1032490 r5:eddafb00 r4:bf08c160
> [    8.375090] [<c0538a34>] (driver_attach) from [<c0538438>]
> (bus_add_driver+0x1ac/0x26c)
> [    8.375100] [<c053828c>] (bus_add_driver) from [<c0539f80>]
> (driver_register+0x80/0xfc)
> [    8.375108]  r8:c053b0a4 r7:c053aa50 r6:c1075830 r5:00000001 r4:bf08c160
> [    8.375119] [<c0539f00>] (driver_register) from [<c053b2ac>]
> (__platform_register_drivers+0x80/0x164)
> [    8.375124]  r5:00000001 r4:bf08b090
> [    8.375148] [<c053b22c>] (__platform_register_drivers) from
> [<bf090020>] (imx_drm_init+0x20/0x1000 [imxdrm])
> [    8.375157]  r10:edd59f40 r9:edfa0ff0 r8:bf08c2c8 r7:eddc8080
> r6:00000000 r5:bf090000
> [    8.375161]  r4:ffffe000
> [    8.375184] [<bf090000>] (imx_drm_init [imxdrm]) from [<c0101ba4>]
> (do_one_initcall+0x4c/0x174)
> [    8.375197] [<c0101b58>] (do_one_initcall) from [<c01b0880>]
> (do_init_module+0x68/0x1fc)
> [    8.375205]  r9:edfa0ff0 r8:bf08c2c8 r6:bf08c280 r5:00000001 r4:bf08c280
> [    8.375215] [<c01b0818>] (do_init_module) from [<c01af89c>]
> (load_module+0x2064/0x270c)
> [    8.375222]  r7:edfa0fc0 r6:bf08c280 r5:00000001 r4:00000001
> [    8.375231] [<c01ad838>] (load_module) from [<c01b01c4>]
> (SyS_finit_module+0xbc/0xf8)
> [    8.375239]  r10:00000000 r9:edd58000 r8:c0108da4 r7:0000017b
> r6:b6d73d40 r5:0000000f
> [    8.375243]  r4:00000000
> [    8.375254] [<c01b0108>] (SyS_finit_module) from [<c0108be0>]
> (ret_fast_syscall+0x0/0x28)
> [    8.375260]  r6:00000000 r5:beb9b9f4 r4:8a440200
> [    8.375265] ---[ end trace b61d7b1acd1ba230 ]---
> [    8.475509] imx-drm display-subsystem: fb0:  frame buffer device
> [    8.552834] [drm] Initialized imx-drm 1.0.0 20120507 for
> display-subsystem on minor 1
> [    9.203549] ------------[ cut here ]------------
> [    9.203584] WARNING: CPU: 2 PID: 484 at
> drivers/gpu/drm/drm_vblank.c:303
> drm_crtc_accurate_vblank_count+0x80/0x84
> [    9.203589] This function requires support for accurate vblank timestamps.
> [    9.203593] Modules linked in: snd_soc_imx_sgtl5000
> snd_soc_fsl_asoc_card snd_soc_imx_spdif snd_ac97_codec btsdio brcmfmac
> brcmutil coda videobuf2_dma_contig imx_vdoa v4l2_mem2mem
> videobuf2_vmalloc videobuf2_memops dw_hdmi_imx dw_hdmi cec imxdrm
> etnaviv imx_ipu_v3 binfmt_misc parport_pc ppdev lp parport
> [    9.203683] CPU: 2 PID: 484 Comm: setfont Tainted: G        W
> 4.14.0-rc7-gd65d313-dirty #1
> [    9.203687] Hardware name: Freescale i.MX6 Quad/DualLite (Device Tree)
> [    9.203690] Backtrace:
> [    9.203708] [<c010d558>] (dump_backtrace) from [<c010d838>]
> (show_stack+0x18/0x1c)
> [    9.203716]  r7:c106eed0 r6:00000000 r5:60080093 r4:c106eed0
> [    9.203735] [<c010d820>] (show_stack) from [<c09ff10c>]
> (dump_stack+0xac/0xd8)
> [    9.203751] [<c09ff060>] (dump_stack) from [<c0122d78>] (__warn+0xec/0x104)
> [    9.203760]  r10:ed481c00 r9:c0527bd8 r8:0000012f r7:00000009
> r6:c0d4fc08 r5:00000000
> [    9.203765]  r4:ed1799f0 r3:00000000
> [    9.203775] [<c0122c8c>] (__warn) from [<c0122dd0>]
> (warn_slowpath_fmt+0x40/0x48)
> [    9.203783]  r9:edccebe0 r8:00000001 r7:edcce800 r6:00000000
> r5:edcce800 r4:c0d50064
> [    9.203794] [<c0122d94>] (warn_slowpath_fmt) from [<c0527bd8>]
> (drm_crtc_accurate_vblank_count+0x80/0x84)
> [    9.203799]  r3:00000000 r2:c0d50064
> [    9.203803]  r4:edcce800
> [    9.203812] [<c0527b58>] (drm_crtc_accurate_vblank_count) from
> [<c052800c>] (drm_crtc_arm_vblank_event+0x30/0x64)
> [    9.203819]  r7:edcce800 r6:00000001 r5:edcce800 r4:eddb9a80
> [    9.203847] [<c0527fdc>] (drm_crtc_arm_vblank_event) from
> [<bf0889bc>] (ipu_crtc_atomic_begin+0x50/0x80 [imxdrm])
> [    9.203853]  r5:edee1c80 r4:edccf818
> [    9.203875] [<bf08896c>] (ipu_crtc_atomic_begin [imxdrm]) from
> [<c04fa720>] (drm_atomic_helper_commit_planes+0x8c/0x2a8)
> [    9.203881]  r5:edee1c80 r4:00000018
> [    9.203898] [<c04fa694>] (drm_atomic_helper_commit_planes) from
> [<bf0881a4>] (imx_drm_atomic_commit_tail+0x30/0x144 [imxdrm])
> [    9.203907]  r10:ed481c00 r9:edccebe0 r8:ed422eb8 r7:edcce800
> r6:edee1c80 r5:bf08b088
> [    9.203911]  r4:edee1c80
> [    9.203930] [<bf088174>] (imx_drm_atomic_commit_tail [imxdrm]) from
> [<c04feb1c>] (commit_tail+0x48/0x8c)
> [    9.203939]  r10:ed481c00 r9:edccebe0 r8:ed422eb8 r7:edcce800
> r6:00000000 r5:bf08b088
> [    9.203943]  r4:edee1c80 r3:bf088174
> [    9.203953] [<c04fead4>] (commit_tail) from [<c04fecb8>]
> (drm_atomic_helper_commit+0x140/0x148)
> [    9.203958]  r5:00000000 r4:edee1c80
> [    9.203975] [<c04feb78>] (drm_atomic_helper_commit) from
> [<c051c138>] (drm_atomic_commit+0x54/0x60)
> [    9.203981]  r7:edee1c80 r6:edcce800 r5:edee1c80 r4:00000000
> [    9.203994] [<c051c0e4>] (drm_atomic_commit) from [<c0501698>]
> (restore_fbdev_mode_atomic+0x19c/0x1f8)
> [    9.204000]  r7:edee1c80 r6:00000001 r5:0000003f r4:000000a0
> [    9.204011] [<c05014fc>] (restore_fbdev_mode_atomic) from
> [<c05019a4>] (drm_fb_helper_pan_display+0xb0/0x1bc)
> [    9.204019]  r10:00000000 r9:c04feb78 r8:ed657c00 r7:ed4cee1c
> r6:00000000 r5:ed481cd0
> [    9.204023]  r4:ed481c00
> [    9.204041] [<c05018f4>] (drm_fb_helper_pan_display) from
> [<c048bc58>] (fb_pan_display+0xd4/0x140)
> [    9.204049]  r10:00000000 r9:ed4cee00 r8:00000438 r7:00000000
> r6:00000000 r5:ed4cee1c
> [    9.204054]  r4:ed657c00 r3:00000000
> [    9.204070] [<c048bb84>] (fb_pan_display) from [<c049a664>]
> (bit_update_start+0x1c/0x38)
> [    9.204078]  r10:00000000 r9:ed4cee00 r8:c17e5bc8 r7:c17e5a70
> r6:ee808c00 r5:ed657c00
> [    9.204083]  r4:ed4cee00 r3:c049a648
> [    9.204093] [<c049a648>] (bit_update_start) from [<c049934c>]
> (fbcon_switch+0x340/0x558)
> [    9.204098]  r5:ed657c00 r4:ee808dc8
> [    9.204111] [<c049900c>] (fbcon_switch) from [<c04db61c>]
> (redraw_screen+0x150/0x248)
> [    9.204120]  r10:00000000 r9:ed657c00 r8:00000008 r7:00000001
> r6:c17e5a70 r5:00000000
> [    9.204124]  r4:ee808c00
> [    9.204134] [<c04db4cc>] (redraw_screen) from [<c0498c50>]
> (fbcon_do_set_font+0x1e0/0x27c)
> [    9.204142]  r8:00000008 r7:c17e5bc8 r6:c17e5a70 r5:00000000 r4:ee808c00
> [    9.204151] [<c0498a70>] (fbcon_do_set_font) from [<c0498ff0>]
> (fbcon_set_font+0x208/0x224)
> [    9.204160]  r10:00001000 r9:0000003e r8:ed179dd8 r7:20135b36
> r6:c17ec890 r5:0000003f
> [    9.204164]  r4:c17e7854
> [    9.204175] [<c0498de8>] (fbcon_set_font) from [<c04e0824>]
> (con_font_op+0x438/0x4f0)
> [    9.204183]  r10:00000000 r9:012c29c8 r8:00000000 r7:ee808c00
> r6:00000001 r5:ee808c00
> [    9.204187]  r4:ed179e40
> [    9.204203] [<c04e03ec>] (con_font_op) from [<c04d3694>]
> (vt_ioctl+0x14a0/0x199c)
> [    9.204213]  r10:00000000 r9:ee808dc8 r8:00000000 r7:00000051
> r6:00000001 r5:ee808c00
> [    9.204217]  r4:be97433c
> [    9.204235] [<c04d21f4>] (vt_ioctl) from [<c04c4c6c>] (tty_ioctl+0x190/0xbcc)
> [    9.204243]  r10:00000000 r9:ed178000 r8:ed12b400 r7:be97433c
> r6:ed720c80 r5:ed12b400
> [    9.204247]  r4:00004b72
> [    9.204262] [<c04c4adc>] (tty_ioctl) from [<c023eab8>]
> (do_vfs_ioctl+0xac/0xa2c)
> [    9.204271]  r9:ed178000 r8:00000003 r7:c023f474 r6:ed720c80
> r5:ee90b3a8 r4:be97433c
> [    9.204280] [<c023ea0c>] (do_vfs_ioctl) from [<c023f474>]
> (SyS_ioctl+0x3c/0x64)
> [    9.204288]  r10:00000000 r9:ed178000 r8:be97433c r7:00004b72
> r6:ed720c80 r5:00000003
> [    9.204292]  r4:ed720c80
> [    9.204311] [<c023f438>] (SyS_ioctl) from [<c0108be0>]
> (ret_fast_syscall+0x0/0x28)
> [    9.204319]  r9:ed178000 r8:c0108da4 r7:00000036 r6:00000010
> r5:00000008 r4:00027128
> [    9.204324] ---[ end trace b61d7b1acd1ba231 ]---
> [    9.431384] ------------[ cut here ]------------
> [    9.431420] WARNING: CPU: 0 PID: 494 at
> drivers/gpu/drm/drm_vblank.c:303
> drm_crtc_accurate_vblank_count+0x80/0x84
> [    9.431426] This function requires support for accurate vblank timestamps.
> [    9.431432] Modules linked in: dw_hdmi_cec dw_hdmi_ahb_audio
> snd_soc_imx_sgtl5000 snd_soc_fsl_asoc_card snd_soc_imx_spdif
> snd_ac97_codec btsdio brcmfmac brcmutil coda videobuf2_dma_contig
> imx_vdoa v4l2_mem2mem videobuf2_vmalloc videobuf2_memops dw_hdmi_imx
> dw_hdmi cec imxdrm etnaviv imx_ipu_v3 binfmt_misc parport_pc ppdev lp
> parport
> [    9.431543] CPU: 0 PID: 494 Comm: setfont Tainted: G        W
> 4.14.0-rc7-gd65d313-dirty #1
> [    9.431548] Hardware name: Freescale i.MX6 Quad/DualLite (Device Tree)
> [    9.431552] Backtrace:
> [    9.431571] [<c010d558>] (dump_backtrace) from [<c010d838>]
> (show_stack+0x18/0x1c)
> [    9.431579]  r7:c106eed0 r6:00000000 r5:60080093 r4:c106eed0
> [    9.431601] [<c010d820>] (show_stack) from [<c09ff10c>]
> (dump_stack+0xac/0xd8)
> [    9.431619] [<c09ff060>] (dump_stack) from [<c0122d78>] (__warn+0xec/0x104)
> [    9.431628]  r10:ed481c00 r9:c0527bd8 r8:0000012f r7:00000009
> r6:c0d4fc08 r5:00000000
> [    9.431633]  r4:ed1799f0 r3:00000000
> [    9.431642] [<c0122c8c>] (__warn) from [<c0122dd0>]
> (warn_slowpath_fmt+0x40/0x48)
> [    9.431651]  r9:edccebe0 r8:00000001 r7:edcce800 r6:00000000
> r5:edcce800 r4:c0d50064
> [    9.431661] [<c0122d94>] (warn_slowpath_fmt) from [<c0527bd8>]
> (drm_crtc_accurate_vblank_count+0x80/0x84)
> [    9.431666]  r3:00000000 r2:c0d50064
> [    9.431671]  r4:edcce800
> [    9.431684] [<c0527b58>] (drm_crtc_accurate_vblank_count) from
> [<c052800c>] (drm_crtc_arm_vblank_event+0x30/0x64)
> [    9.431690]  r7:edcce800 r6:00000001 r5:edcce800 r4:ed417400
> [    9.431721] [<c0527fdc>] (drm_crtc_arm_vblank_event) from
> [<bf0889bc>] (ipu_crtc_atomic_begin+0x50/0x80 [imxdrm])
> [    9.431727]  r5:ed417200 r4:edccf818
> [    9.431753] [<bf08896c>] (ipu_crtc_atomic_begin [imxdrm]) from
> [<c04fa720>] (drm_atomic_helper_commit_planes+0x8c/0x2a8)
> [    9.431758]  r5:ed417200 r4:00000018
> [    9.431775] [<c04fa694>] (drm_atomic_helper_commit_planes) from
> [<bf0881a4>] (imx_drm_atomic_commit_tail+0x30/0x144 [imxdrm])
> [    9.431784]  r10:ed481c00 r9:edccebe0 r8:ed422eb8 r7:edcce800
> r6:ed417200 r5:bf08b088
> [    9.431789]  r4:ed417200
> [    9.431807] [<bf088174>] (imx_drm_atomic_commit_tail [imxdrm]) from
> [<c04feb1c>] (commit_tail+0x48/0x8c)
> [    9.431816]  r10:ed481c00 r9:edccebe0 r8:ed422eb8 r7:edcce800
> r6:00000000 r5:bf08b088
> [    9.431822]  r4:ed417200 r3:bf088174
> [    9.431832] [<c04fead4>] (commit_tail) from [<c04fecb8>]
> (drm_atomic_helper_commit+0x140/0x148)
> [    9.431837]  r5:00000000 r4:ed417200
> [    9.431853] [<c04feb78>] (drm_atomic_helper_commit) from
> [<c051c138>] (drm_atomic_commit+0x54/0x60)
> [    9.431859]  r7:ed417200 r6:edcce800 r5:ed417200 r4:00000000
> [    9.431874] [<c051c0e4>] (drm_atomic_commit) from [<c0501698>]
> (restore_fbdev_mode_atomic+0x19c/0x1f8)
> [    9.431880]  r7:ed417200 r6:00000001 r5:0000003f r4:000000a0
> [    9.431894] [<c05014fc>] (restore_fbdev_mode_atomic) from
> [<c05019a4>] (drm_fb_helper_pan_display+0xb0/0x1bc)
> [    9.431903]  r10:00000000 r9:c04feb78 r8:ed657c00 r7:ed4cee1c
> r6:00000000 r5:ed481cd0
> [    9.431907]  r4:ed481c00
> [    9.431925] [<c05018f4>] (drm_fb_helper_pan_display) from
> [<c048bc58>] (fb_pan_display+0xd4/0x140)
> [    9.431933]  r10:00000000 r9:ed4cee00 r8:00000438 r7:00000000
> r6:00000000 r5:ed4cee1c
> [    9.431938]  r4:ed657c00 r3:00000000
> [    9.431955] [<c048bb84>] (fb_pan_display) from [<c049a664>]
> (bit_update_start+0x1c/0x38)
> [    9.431965]  r10:00000000 r9:ed4cee00 r8:c17e5bc8 r7:c17e5a70
> r6:ee808c00 r5:ed657c00
> [    9.431970]  r4:ed4cee00 r3:c049a648
> [    9.431980] [<c049a648>] (bit_update_start) from [<c049934c>]
> (fbcon_switch+0x340/0x558)
> [    9.431985]  r5:ed657c00 r4:ee808dc8
> [    9.431999] [<c049900c>] (fbcon_switch) from [<c04db61c>]
> (redraw_screen+0x150/0x248)
> [    9.432007]  r10:00000000 r9:ed657c00 r8:00000008 r7:00000001
> r6:c17e5a70 r5:00000000
> [    9.432011]  r4:ee808c00
> [    9.432022] [<c04db4cc>] (redraw_screen) from [<c0498c50>]
> (fbcon_do_set_font+0x1e0/0x27c)
> [    9.432029]  r8:00000008 r7:c17e5bc8 r6:c17e5a70 r5:ed592010 r4:ee808c00
> [    9.432041] [<c0498a70>] (fbcon_do_set_font) from [<c0498ff0>]
> (fbcon_set_font+0x208/0x224)
> [    9.432050]  r10:c17e5bc8 r9:0000003e r8:ed179dd8 r7:20135b36
> r6:c17ebfb4 r5:00000000
> [    9.432054]  r4:c17e5bc8
> [    9.432064] [<c0498de8>] (fbcon_set_font) from [<c04e0824>]
> (con_font_op+0x438/0x4f0)
> [    9.432072]  r10:00000000 r9:00cec9c8 r8:00000000 r7:ee808c00
> r6:00000001 r5:ee808c00
> [    9.432076]  r4:ed179e40
> [    9.432091] [<c04e03ec>] (con_font_op) from [<c04d3694>]
> (vt_ioctl+0x14a0/0x199c)
> [    9.432099]  r10:00000000 r9:ee808dc8 r8:00000000 r7:00000051
> r6:00000001 r5:ee808c00
> [    9.432103]  r4:bee3234c
> [    9.432127] [<c04d21f4>] (vt_ioctl) from [<c04c4c6c>] (tty_ioctl+0x190/0xbcc)
> [    9.432135]  r10:00000000 r9:ed178000 r8:ed5db400 r7:bee3234c
> r6:ed7fc8c0 r5:ed5db400
> [    9.432139]  r4:00004b72
> [    9.432153] [<c04c4adc>] (tty_ioctl) from [<c023eab8>]
> (do_vfs_ioctl+0xac/0xa2c)
> [    9.432161]  r9:ed178000 r8:00000003 r7:c023f474 r6:ed7fc8c0
> r5:ee90b3a8 r4:bee3234c
> [    9.432170] [<c023ea0c>] (do_vfs_ioctl) from [<c023f474>]
> (SyS_ioctl+0x3c/0x64)
> [    9.432178]  r10:00000000 r9:ed178000 r8:bee3234c r7:00004b72
> r6:ed7fc8c0 r5:00000003
> [    9.432182]  r4:ed7fc8c0
> [    9.432201] [<c023f438>] (SyS_ioctl) from [<c0108be0>]
> (ret_fast_syscall+0x0/0x28)
> [    9.432209]  r9:ed178000 r8:c0108da4 r7:00000036 r6:00000010
> r5:00000008 r4:00027128
> [    9.432214] ---[ end trace b61d7b1acd1ba232 ]---
> [    9.458053] ------------[ cut here ]------------
> [    9.458094] WARNING: CPU: 0 PID: 502 at
> drivers/gpu/drm/drm_vblank.c:303
> drm_crtc_accurate_vblank_count+0x80/0x84
> [    9.458103] This function requires support for accurate vblank timestamps.
> [    9.458110] Modules linked in: dw_hdmi_cec dw_hdmi_ahb_audio
> snd_soc_imx_sgtl5000 snd_soc_fsl_asoc_card snd_soc_imx_spdif
> snd_ac97_codec btsdio brcmfmac brcmutil coda videobuf2_dma_contig
> imx_vdoa v4l2_mem2mem videobuf2_vmalloc videobuf2_memops dw_hdmi_imx
> dw_hdmi cec imxdrm etnaviv imx_ipu_v3 binfmt_misc parport_pc ppdev lp
> parport
> [    9.458283] CPU: 0 PID: 502 Comm: setfont Tainted: G        W
> 4.14.0-rc7-gd65d313-dirty #1
> [    9.458288] Hardware name: Freescale i.MX6 Quad/DualLite (Device Tree)
> [    9.458293] Backtrace:
> [    9.458312] [<c010d558>] (dump_backtrace) from [<c010d838>]
> (show_stack+0x18/0x1c)
> [    9.458326]  r7:c106eed0 r6:00000000 r5:60080093 r4:c106eed0
> [    9.458353] [<c010d820>] (show_stack) from [<c09ff10c>]
> (dump_stack+0xac/0xd8)
> [    9.458374] [<c09ff060>] (dump_stack) from [<c0122d78>] (__warn+0xec/0x104)
> [    9.458383]  r10:ed481c00 r9:c0527bd8 r8:0000012f r7:00000009
> r6:c0d4fc08 r5:00000000
> [    9.458388]  r4:ed0e39f0 r3:00000000
> [    9.458398] [<c0122c8c>] (__warn) from [<c0122dd0>]
> (warn_slowpath_fmt+0x40/0x48)
> [    9.458407]  r9:edccebe0 r8:00000001 r7:edcce800 r6:00000000
> r5:edcce800 r4:c0d50064
> [    9.458418] [<c0122d94>] (warn_slowpath_fmt) from [<c0527bd8>]
> (drm_crtc_accurate_vblank_count+0x80/0x84)
> [    9.458423]  r3:00000000 r2:c0d50064
> [    9.458426]  r4:edcce800
> [    9.458436] [<c0527b58>] (drm_crtc_accurate_vblank_count) from
> [<c052800c>] (drm_crtc_arm_vblank_event+0x30/0x64)
> [    9.458442]  r7:edcce800 r6:00000001 r5:edcce800 r4:ed417b00
> [    9.458477] [<c0527fdc>] (drm_crtc_arm_vblank_event) from
> [<bf0889bc>] (ipu_crtc_atomic_begin+0x50/0x80 [imxdrm])
> [    9.458483]  r5:ed417680 r4:edccf818
> [    9.458507] [<bf08896c>] (ipu_crtc_atomic_begin [imxdrm]) from
> [<c04fa720>] (drm_atomic_helper_commit_planes+0x8c/0x2a8)
> [    9.458512]  r5:ed417680 r4:00000018
> [    9.458529] [<c04fa694>] (drm_atomic_helper_commit_planes) from
> [<bf0881a4>] (imx_drm_atomic_commit_tail+0x30/0x144 [imxdrm])
> [    9.458538]  r10:ed481c00 r9:edccebe0 r8:ed422eb8 r7:edcce800
> r6:ed417680 r5:bf08b088
> [    9.458549]  r4:ed417680
> [    9.458571] [<bf088174>] (imx_drm_atomic_commit_tail [imxdrm]) from
> [<c04feb1c>] (commit_tail+0x48/0x8c)
> [    9.458580]  r10:ed481c00 r9:edccebe0 r8:ed422eb8 r7:edcce800
> r6:00000000 r5:bf08b088
> [    9.458584]  r4:ed417680 r3:bf088174
> [    9.458594] [<c04fead4>] (commit_tail) from [<c04fecb8>]
> (drm_atomic_helper_commit+0x140/0x148)
> [    9.458600]  r5:00000000 r4:ed417680
> [    9.458618] [<c04feb78>] (drm_atomic_helper_commit) from
> [<c051c138>] (drm_atomic_commit+0x54/0x60)
> [    9.458627]  r7:ed417680 r6:edcce800 r5:ed417680 r4:00000000
> [    9.458652] [<c051c0e4>] (drm_atomic_commit) from [<c0501698>]
> (restore_fbdev_mode_atomic+0x19c/0x1f8)
> [    9.458663]  r7:ed417680 r6:00000001 r5:0000003f r4:000000a0
> [    9.458676] [<c05014fc>] (restore_fbdev_mode_atomic) from
> [<c05019a4>] (drm_fb_helper_pan_display+0xb0/0x1bc)
> [    9.458684]  r10:00000000 r9:c04feb78 r8:ed657c00 r7:ed4cee1c
> r6:00000000 r5:ed481cd0
> [    9.458688]  r4:ed481c00
> [    9.458718] [<c05018f4>] (drm_fb_helper_pan_display) from
> [<c048bc58>] (fb_pan_display+0xd4/0x140)
> [    9.458730]  r10:00000000 r9:ed4cee00 r8:00000438 r7:00000000
> r6:00000000 r5:ed4cee1c
> [    9.458737]  r4:ed657c00 r3:00000000
> [    9.458757] [<c048bb84>] (fb_pan_display) from [<c049a664>]
> (bit_update_start+0x1c/0x38)
> [    9.458767]  r10:00000000 r9:ed4cee00 r8:c17e5bc8 r7:c17e5a70
> r6:ee808c00 r5:ed657c00
> [    9.458773]  r4:ed4cee00 r3:c049a648
> [    9.458785] [<c049a648>] (bit_update_start) from [<c049934c>]
> (fbcon_switch+0x340/0x558)
> [    9.458791]  r5:ed657c00 r4:ee808dc8
> [    9.458807] [<c049900c>] (fbcon_switch) from [<c04db61c>]
> (redraw_screen+0x150/0x248)
> [    9.458819]  r10:00000000 r9:ed657c00 r8:00000008 r7:00000001
> r6:c17e5a70 r5:00000000
> [    9.458824]  r4:ee808c00
> [    9.458846] [<c04db4cc>] (redraw_screen) from [<c0498c50>]
> (fbcon_do_set_font+0x1e0/0x27c)
> [    9.458857]  r8:00000008 r7:c17e5bc8 r6:c17e5a70 r5:ed592010 r4:ee808c00
> [    9.458870] [<c0498a70>] (fbcon_do_set_font) from [<c0498ff0>]
> (fbcon_set_font+0x208/0x224)
> [    9.458880]  r10:c17e5bc8 r9:0000003e r8:ed0e3dd8 r7:20135b36
> r6:c17ebfb4 r5:00000000
> [    9.458885]  r4:c17e5bc8
> [    9.458902] [<c0498de8>] (fbcon_set_font) from [<c04e0824>]
> (con_font_op+0x438/0x4f0)
> [    9.458913]  r10:00000000 r9:0169e9c8 r8:00000000 r7:ee808c00
> r6:00000001 r5:ee808c00
> [    9.458918]  r4:ed0e3e40
> [    9.458945] [<c04e03ec>] (con_font_op) from [<c04d3694>]
> (vt_ioctl+0x14a0/0x199c)
> [    9.458955]  r10:00000000 r9:ee808dc8 r8:00000000 r7:00000051
> r6:00000001 r5:ee808c00
> [    9.458962]  r4:bee3533c
> [    9.458995] [<c04d21f4>] (vt_ioctl) from [<c04c4c6c>] (tty_ioctl+0x190/0xbcc)
> [    9.459005]  r10:00000000 r9:ed0e2000 r8:ed5db400 r7:bee3533c
> r6:ed5e1e00 r5:ed5db400
> [    9.459018]  r4:00004b72
> [    9.459039] [<c04c4adc>] (tty_ioctl) from [<c023eab8>]
> (do_vfs_ioctl+0xac/0xa2c)
> [    9.459047]  r9:ed0e2000 r8:00000003 r7:c023f474 r6:ed5e1e00
> r5:eeb242f8 r4:bee3533c
> [    9.459056] [<c023ea0c>] (do_vfs_ioctl) from [<c023f474>]
> (SyS_ioctl+0x3c/0x64)
> [    9.459064]  r10:00000000 r9:ed0e2000 r8:bee3533c r7:00004b72
> r6:ed5e1e00 r5:00000003
> [    9.459068]  r4:ed5e1e00
> [    9.459088] [<c023f438>] (SyS_ioctl) from [<c0108be0>]
> (ret_fast_syscall+0x0/0x28)
> [    9.459096]  r9:ed0e2000 r8:c0108da4 r7:00000036 r6:00000010
> r5:00000008 r4:00027128
> [    9.459102] ---[ end trace b61d7b1acd1ba233 ]---
> [    9.609537] [drm] Got external EDID base block and 1 extension from
> "edid/ktc_edid.bin" for connector "HDMI-A-1"
> [    9.609622] dw_hdmi_connector_get_modes:1906: dwhdmi-imx
> 120000.hdmi: got edid: width[48] x height[27]
> [    9.611901] ------------[ cut here ]------------
> [    9.611956] WARNING: CPU: 0 PID: 29 at
> drivers/gpu/drm/drm_vblank.c:303
> drm_crtc_accurate_vblank_count+0x80/0x84
> [    9.611964] This function requires support for accurate vblank timestamps.
> [    9.611972] Modules linked in: dw_hdmi_cec dw_hdmi_ahb_audio
> snd_soc_imx_sgtl5000 snd_soc_fsl_asoc_card snd_soc_imx_spdif
> snd_ac97_codec btsdio brcmfmac brcmutil coda videobuf2_dma_contig
> imx_vdoa v4l2_mem2mem videobuf2_vmalloc videobuf2_memops dw_hdmi_imx
> dw_hdmi cec imxdrm etnaviv imx_ipu_v3 binfmt_misc parport_pc ppdev lp
> parport
> [    9.612148] CPU: 0 PID: 29 Comm: kworker/0:1 Tainted: G        W
>    4.14.0-rc7-gd65d313-dirty #1
> [    9.612155] Hardware name: Freescale i.MX6 Quad/DualLite (Device Tree)
> [    9.612176] Workqueue: events output_poll_execute
> [    9.612188] Backtrace:
> [    9.612210] [<c010d558>] (dump_backtrace) from [<c010d838>]
> (show_stack+0x18/0x1c)
> [    9.612221]  r7:c106eed0 r6:00000000 r5:600f0193 r4:c106eed0
> [    9.612242] [<c010d820>] (show_stack) from [<c09ff10c>]
> (dump_stack+0xac/0xd8)
> [    9.612261] [<c09ff060>] (dump_stack) from [<c0122d78>] (__warn+0xec/0x104)
> [    9.612275]  r10:ed481c00 r9:c0527bd8 r8:0000012f r7:00000009
> r6:c0d4fc08 r5:00000000
> [    9.612283]  r4:ee993c00 r3:00000006
> [    9.612296] [<c0122c8c>] (__warn) from [<c0122dd0>]
> (warn_slowpath_fmt+0x40/0x48)
> [    9.612308]  r9:edccebe0 r8:00000001 r7:edcce800 r6:00000000
> r5:edcce800 r4:c0d50064
> [    9.612322] [<c0122d94>] (warn_slowpath_fmt) from [<c0527bd8>]
> (drm_crtc_accurate_vblank_count+0x80/0x84)
> [    9.612330]  r3:00000000 r2:c0d50064
> [    9.612337]  r4:edcce800
> [    9.612350] [<c0527b58>] (drm_crtc_accurate_vblank_count) from
> [<c052800c>] (drm_crtc_arm_vblank_event+0x30/0x64)
> [    9.612359]  r7:edcce800 r6:00000001 r5:edcce800 r4:edee4800
> [    9.612397] [<c0527fdc>] (drm_crtc_arm_vblank_event) from
> [<bf0889bc>] (ipu_crtc_atomic_begin+0x50/0x80 [imxdrm])
> [    9.612407]  r5:ed41c700 r4:edccf818
> [    9.612434] [<bf08896c>] (ipu_crtc_atomic_begin [imxdrm]) from
> [<c04fa720>] (drm_atomic_helper_commit_planes+0x8c/0x2a8)
> [    9.612443]  r5:ed41c700 r4:00000018
> [    9.612465] [<c04fa694>] (drm_atomic_helper_commit_planes) from
> [<bf0881a4>] (imx_drm_atomic_commit_tail+0x30/0x144 [imxdrm])
> [    9.612478]  r10:ed481c00 r9:edccebe0 r8:ed422eb8 r7:edcce800
> r6:ed41c700 r5:bf08b088
> [    9.612485]  r4:ed41c700
> [    9.612510] [<bf088174>] (imx_drm_atomic_commit_tail [imxdrm]) from
> [<c04feb1c>] (commit_tail+0x48/0x8c)
> [    9.612522]  r10:ed481c00 r9:edccebe0 r8:ed422eb8 r7:edcce800
> r6:00000000 r5:bf08b088
> [    9.612530]  r4:ed41c700 r3:bf088174
> [    9.612544] [<c04fead4>] (commit_tail) from [<c04fecb8>]
> (drm_atomic_helper_commit+0x140/0x148)
> [    9.612552]  r5:00000000 r4:ed41c700
> [    9.612576] [<c04feb78>] (drm_atomic_helper_commit) from
> [<c051c138>] (drm_atomic_commit+0x54/0x60)
> [    9.612586]  r7:ed41c700 r6:edcce800 r5:ed41c700 r4:00000000
> [    9.612604] [<c051c0e4>] (drm_atomic_commit) from [<c0501698>]
> (restore_fbdev_mode_atomic+0x19c/0x1f8)
> [    9.612615]  r7:ed41c700 r6:00000001 r5:0000003f r4:000000a0
> [    9.612628] [<c05014fc>] (restore_fbdev_mode_atomic) from
> [<c0501724>] (restore_fbdev_mode+0x30/0x168)
> [    9.612641]  r10:00000001 r9:00000000 r8:edccea54 r7:ed481c00
> r6:ed481cd0 r5:ed481cd0
> [    9.612648]  r4:ed481c00
> [    9.612665] [<c05016f4>] (restore_fbdev_mode) from [<c0504740>]
> (drm_fb_helper_restore_fbdev_mode_unlocked.part.8+0x28/0x7c)
> [    9.612678]  r10:00000001 r9:00000000 r8:edccea54 r7:00000001
> r6:ed481cd0 r5:ed481cd0
> [    9.612685]  r4:ed481c00
> [    9.612699] [<c0504718>]
> (drm_fb_helper_restore_fbdev_mode_unlocked.part.8) from [<c0504834>]
> (drm_fb_helper_set_par+0x5c/0x8c)
> [    9.612711]  r7:00000001 r6:ed481cd0 r5:00000000 r4:00000000
> [    9.612726] [<c05047d8>] (drm_fb_helper_set_par) from [<c05046d0>]
> (drm_fb_helper_hotplug_event.part.7+0xa4/0xbc)
> [    9.612736]  r5:00000000 r4:ed481c00
> [    9.612750] [<c050462c>] (drm_fb_helper_hotplug_event.part.7) from
> [<c0504714>] (drm_fb_helper_hotplug_event+0x2c/0x30)
> [    9.612760]  r7:00000001 r6:00000000 r5:edcce800 r4:edcce800
> [    9.612774] [<c05046e8>] (drm_fb_helper_hotplug_event) from
> [<c0504e34>] (drm_fbdev_cma_hotplug_event+0x18/0x1c)
> [    9.612799] [<c0504e1c>] (drm_fbdev_cma_hotplug_event) from
> [<bf0882d0>] (imx_drm_output_poll_changed+0x18/0x1c [imxdrm])
> [    9.612825] [<bf0882b8>] (imx_drm_output_poll_changed [imxdrm])
> from [<c04f3fbc>] (drm_kms_helper_hotplug_event+0x2c/0x30)
> [    9.612840] [<c04f3f90>] (drm_kms_helper_hotplug_event) from
> [<c04f41a0>] (output_poll_execute+0x190/0x1a4)
> [    9.612848]  r5:edcce800 r4:edccec18
> [    9.612868] [<c04f4010>] (output_poll_execute) from [<c013f1c4>]
> (process_one_work+0x258/0x4f0)
> [    9.612879]  r10:00000001 r9:00000000 r8:eef9ed00 r7:ee993ef8
> r6:eef9bcc0 r5:ee842680
> [    9.612886]  r4:edccec18
> [    9.612899] [<c013ef6c>] (process_one_work) from [<c01400e8>]
> (worker_thread+0x58/0x59c)
> [    9.612910]  r10:ee992000 r9:eef9bcf4 r8:c1004900 r7:00000008
> r6:ee842698 r5:eef9bcc0
> [    9.612917]  r4:ee842680
> [    9.612931] [<c0140090>] (worker_thread) from [<c01462c0>]
> (kthread+0x140/0x16c)
> [    9.612942]  r10:ee87de74 r9:ee855238 r8:ee842680 r7:ee992000
> r6:ee963ec0 r5:00000000
> [    9.612949]  r4:ee855200
> [    9.612969] [<c0146180>] (kthread) from [<c0108c88>]
> (ret_from_fork+0x14/0x2c)
> [    9.612980]  r10:00000000 r9:00000000 r8:00000000 r7:00000000
> r6:00000000 r5:c0146180
> [    9.612987]  r4:ee963ec0
> [    9.612995] ---[ end trace b61d7b1acd1ba234 ]---
> [    9.658166] ------------[ cut here ]------------
> [    9.658214] WARNING: CPU: 0 PID: 513 at
> drivers/gpu/drm/drm_vblank.c:303
> drm_crtc_accurate_vblank_count+0x80/0x84
> [    9.658224] This function requires support for accurate vblank timestamps.
> [    9.658229] Modules linked in: dw_hdmi_cec dw_hdmi_ahb_audio
> snd_soc_imx_sgtl5000 snd_soc_fsl_asoc_card snd_soc_imx_spdif
> snd_ac97_codec btsdio brcmfmac brcmutil coda videobuf2_dma_contig
> imx_vdoa v4l2_mem2mem videobuf2_vmalloc videobuf2_memops dw_hdmi_imx
> dw_hdmi cec imxdrm etnaviv imx_ipu_v3 binfmt_misc parport_pc ppdev lp
> parport
> [    9.658331] CPU: 0 PID: 513 Comm: setfont Tainted: G        W
> 4.14.0-rc7-gd65d313-dirty #1
> [    9.658336] Hardware name: Freescale i.MX6 Quad/DualLite (Device Tree)
> [    9.658340] Backtrace:
> [    9.658360] [<c010d558>] (dump_backtrace) from [<c010d838>]
> (show_stack+0x18/0x1c)
> [    9.658368]  r7:c106eed0 r6:00000000 r5:60080093 r4:c106eed0
> [    9.658388] [<c010d820>] (show_stack) from [<c09ff10c>]
> (dump_stack+0xac/0xd8)
> [    9.658404] [<c09ff060>] (dump_stack) from [<c0122d78>] (__warn+0xec/0x104)
> [    9.658413]  r10:ed481c00 r9:c0527bd8 r8:0000012f r7:00000009
> r6:c0d4fc08 r5:00000000
> [    9.658418]  r4:ed0e39f0 r3:00000000
> [    9.658427] [<c0122c8c>] (__warn) from [<c0122dd0>]
> (warn_slowpath_fmt+0x40/0x48)
> [    9.658436]  r9:edccebe0 r8:00000001 r7:edcce800 r6:00000000
> r5:edcce800 r4:c0d50064
> [    9.658448] [<c0122d94>] (warn_slowpath_fmt) from [<c0527bd8>]
> (drm_crtc_accurate_vblank_count+0x80/0x84)
> [    9.658453]  r3:00000000 r2:c0d50064
> [    9.658457]  r4:edcce800
> [    9.658467] [<c0527b58>] (drm_crtc_accurate_vblank_count) from
> [<c052800c>] (drm_crtc_arm_vblank_event+0x30/0x64)
> [    9.658473]  r7:edcce800 r6:00000001 r5:edcce800 r4:ed67c980
> [    9.658504] [<c0527fdc>] (drm_crtc_arm_vblank_event) from
> [<bf0889bc>] (ipu_crtc_atomic_begin+0x50/0x80 [imxdrm])
> [    9.658511]  r5:ed41ca80 r4:edccf818
> [    9.658539] [<bf08896c>] (ipu_crtc_atomic_begin [imxdrm]) from
> [<c04fa720>] (drm_atomic_helper_commit_planes+0x8c/0x2a8)
> [    9.658544]  r5:ed41ca80 r4:00000018
> [    9.658563] [<c04fa694>] (drm_atomic_helper_commit_planes) from
> [<bf0881a4>] (imx_drm_atomic_commit_tail+0x30/0x144 [imxdrm])
> [    9.658572]  r10:ed481c00 r9:edccebe0 r8:ed422eb8 r7:edcce800
> r6:ed41ca80 r5:bf08b088
> [    9.658576]  r4:ed41ca80
> [    9.658599] [<bf088174>] (imx_drm_atomic_commit_tail [imxdrm]) from
> [<c04feb1c>] (commit_tail+0x48/0x8c)
> [    9.658609]  r10:ed481c00 r9:edccebe0 r8:ed422eb8 r7:edcce800
> r6:00000000 r5:bf08b088
> [    9.658614]  r4:ed41ca80 r3:bf088174
> [    9.658624] [<c04fead4>] (commit_tail) from [<c04fecb8>]
> (drm_atomic_helper_commit+0x140/0x148)
> [    9.658630]  r5:00000000 r4:ed41ca80
> [    9.658648] [<c04feb78>] (drm_atomic_helper_commit) from
> [<c051c138>] (drm_atomic_commit+0x54/0x60)
> [    9.658655]  r7:ed41ca80 r6:edcce800 r5:ed41ca80 r4:00000000
> [    9.658669] [<c051c0e4>] (drm_atomic_commit) from [<c0501698>]
> (restore_fbdev_mode_atomic+0x19c/0x1f8)
> [    9.658676]  r7:ed41ca80 r6:00000001 r5:0000003f r4:000000a0
> [    9.658687] [<c05014fc>] (restore_fbdev_mode_atomic) from
> [<c05019a4>] (drm_fb_helper_pan_display+0xb0/0x1bc)
> [    9.658698]  r10:00000000 r9:c04feb78 r8:ed657c00 r7:ed4cee1c
> r6:00000000 r5:ed481cd0
> [    9.658703]  r4:ed481c00
> [    9.658734] [<c05018f4>] (drm_fb_helper_pan_display) from
> [<c048bc58>] (fb_pan_display+0xd4/0x140)
> [    9.658743]  r10:00000000 r9:ed4cee00 r8:00000438 r7:00000000
> r6:00000000 r5:ed4cee1c
> [    9.658751]  r4:ed657c00 r3:00000000
> [    9.658772] [<c048bb84>] (fb_pan_display) from [<c049a664>]
> (bit_update_start+0x1c/0x38)
> [    9.658782]  r10:00000000 r9:ed4cee00 r8:c17e5bc8 r7:c17e5a70
> r6:ee808c00 r5:ed657c00
> [    9.658788]  r4:ed4cee00 r3:c049a648
> [    9.658801] [<c049a648>] (bit_update_start) from [<c049934c>]
> (fbcon_switch+0x340/0x558)
> [    9.658807]  r5:ed657c00 r4:ee808dc8
> [    9.658829] [<c049900c>] (fbcon_switch) from [<c04db61c>]
> (redraw_screen+0x150/0x248)
> [    9.658838]  r10:00000000 r9:ed657c00 r8:00000008 r7:00000001
> r6:c17e5a70 r5:00000000
> [    9.658845]  r4:ee808c00
> [    9.658860] [<c04db4cc>] (redraw_screen) from [<c0498c50>]
> (fbcon_do_set_font+0x1e0/0x27c)
> [    9.658871]  r8:00000008 r7:c17e5bc8 r6:c17e5a70 r5:ed592010 r4:ee808c00
> [    9.658883] [<c0498a70>] (fbcon_do_set_font) from [<c0498ff0>]
> (fbcon_set_font+0x208/0x224)
> [    9.658896]  r10:c17e5bc8 r9:0000003e r8:ed0e3dd8 r7:20135b36
> r6:c17ebfb4 r5:00000000
> [    9.658904]  r4:c17e5bc8
> [    9.658916] [<c0498de8>] (fbcon_set_font) from [<c04e0824>]
> (con_font_op+0x438/0x4f0)
> [    9.658925]  r10:00000000 r9:005449c8 r8:00000000 r7:ee808c00
> r6:00000001 r5:ee808c00
> [    9.658931]  r4:ed0e3e40
> [    9.658954] [<c04e03ec>] (con_font_op) from [<c04d3694>]
> (vt_ioctl+0x14a0/0x199c)
> [    9.658967]  r10:00000000 r9:ee808dc8 r8:00000000 r7:00000051
> r6:00000001 r5:ee808c00
> [    9.658972]  r4:bea4734c
> [    9.659001] [<c04d21f4>] (vt_ioctl) from [<c04c4c6c>] (tty_ioctl+0x190/0xbcc)
> [    9.659012]  r10:00000000 r9:ed0e2000 r8:ed5db400 r7:bea4734c
> r6:ed7dbcc0 r5:ed5db400
> [    9.659016]  r4:00004b72
> [    9.659037] [<c04c4adc>] (tty_ioctl) from [<c023eab8>]
> (do_vfs_ioctl+0xac/0xa2c)
> [    9.659047]  r9:ed0e2000 r8:00000003 r7:c023f474 r6:ed7dbcc0
> r5:eeb242f8 r4:bea4734c
> [    9.659059] [<c023ea0c>] (do_vfs_ioctl) from [<c023f474>]
> (SyS_ioctl+0x3c/0x64)
> [    9.659070]  r10:00000000 r9:ed0e2000 r8:bea4734c r7:00004b72
> r6:ed7dbcc0 r5:00000003
> [    9.659075]  r4:ed7dbcc0
> [    9.659095] [<c023f438>] (SyS_ioctl) from [<c0108be0>]
> (ret_fast_syscall+0x0/0x28)
> [    9.659106]  r9:ed0e2000 r8:c0108da4 r7:00000036 r6:00000010
> r5:00000008 r4:00027128
> [    9.659113] ---[ end trace b61d7b1acd1ba235 ]---
> [   10.082677] brcmfmac: brcmf_sdio_htclk: HT Avail timeout (1000000):
> clkctl 0x50
> [   10.414177] Atheros 8035 ethernet 2188000.ethernet-1:01: attached
> PHY driver [Atheros 8035 ethernet]
> (mii_bus:phy_addr=2188000.ethernet-1:01, irq=POLL)
> [   10.415671] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
> [   10.996555] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
> [   10.996580] Bluetooth: BNEP filters: protocol multicast
> [   10.996625] Bluetooth: BNEP socket layer initialized
> [   13.514870] fec 2188000.ethernet eth0: Link is Up - 1Gbps/Full -
> flow control rx/tx
> [   13.515799] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
> [   17.069066] ------------[ cut here ]------------
> [   17.069154] WARNING: CPU: 3 PID: 757 at
> drivers/gpu/drm/drm_vblank.c:303
> drm_crtc_accurate_vblank_count+0x80/0x84
> [   17.069165] This function requires support for accurate vblank timestamps.
> [   17.069172] Modules linked in: bnep dw_hdmi_cec dw_hdmi_ahb_audio
> snd_soc_imx_sgtl5000 snd_soc_fsl_asoc_card snd_soc_imx_spdif
> snd_ac97_codec btsdio brcmfmac brcmutil coda videobuf2_dma_contig
> imx_vdoa v4l2_mem2mem videobuf2_vmalloc videobuf2_memops dw_hdmi_imx
> dw_hdmi cec imxdrm etnaviv imx_ipu_v3 binfmt_misc parport_pc ppdev lp
> parport
> [   17.069354] CPU: 3 PID: 757 Comm: Xorg.wrap Tainted: G        W
>   4.14.0-rc7-gd65d313-dirty #1
> [   17.069361] Hardware name: Freescale i.MX6 Quad/DualLite (Device Tree)
> [   17.069368] Backtrace:
> [   17.069389] [<c010d558>] (dump_backtrace) from [<c010d838>]
> (show_stack+0x18/0x1c)
> [   17.069400]  r7:c106eed0 r6:00000000 r5:600f0093 r4:c106eed0
> [   17.069419] [<c010d820>] (show_stack) from [<c09ff10c>]
> (dump_stack+0xac/0xd8)
> [   17.069456] [<c09ff060>] (dump_stack) from [<c0122d78>] (__warn+0xec/0x104)
> [   17.069485]  r10:ed481c00 r9:c0527bd8 r8:0000012f r7:00000009
> r6:c0d4fc08 r5:00000000
> [   17.069504]  r4:ed137c80 r3:00000006
> [   17.069524] [<c0122c8c>] (__warn) from [<c0122dd0>]
> (warn_slowpath_fmt+0x40/0x48)
> [   17.069539]  r9:edccebe0 r8:00000001 r7:edcce800 r6:00000000
> r5:edcce800 r4:c0d50064
> [   17.069553] [<c0122d94>] (warn_slowpath_fmt) from [<c0527bd8>]
> (drm_crtc_accurate_vblank_count+0x80/0x84)
> [   17.069561]  r3:00000000 r2:c0d50064
> [   17.069568]  r4:edcce800
> [   17.069581] [<c0527b58>] (drm_crtc_accurate_vblank_count) from
> [<c052800c>] (drm_crtc_arm_vblank_event+0x30/0x64)
> [   17.069590]  r7:edcce800 r6:00000001 r5:edcce800 r4:eddbb900
> [   17.069623] [<c0527fdc>] (drm_crtc_arm_vblank_event) from
> [<bf0889bc>] (ipu_crtc_atomic_begin+0x50/0x80 [imxdrm])
> [   17.069632]  r5:eddafe80 r4:edccf818
> [   17.069658] [<bf08896c>] (ipu_crtc_atomic_begin [imxdrm]) from
> [<c04fa720>] (drm_atomic_helper_commit_planes+0x8c/0x2a8)
> [   17.069666]  r5:eddafe80 r4:00000018
> [   17.069685] [<c04fa694>] (drm_atomic_helper_commit_planes) from
> [<bf0881a4>] (imx_drm_atomic_commit_tail+0x30/0x144 [imxdrm])
> [   17.069698]  r10:ed481c00 r9:edccebe0 r8:ed422eb8 r7:edcce800
> r6:eddafe80 r5:bf08b088
> [   17.069705]  r4:eddafe80
> [   17.069726] [<bf088174>] (imx_drm_atomic_commit_tail [imxdrm]) from
> [<c04feb1c>] (commit_tail+0x48/0x8c)
> [   17.069738]  r10:ed481c00 r9:edccebe0 r8:ed422eb8 r7:edcce800
> r6:00000000 r5:bf08b088
> [   17.069746]  r4:eddafe80 r3:bf088174
> [   17.069758] [<c04fead4>] (commit_tail) from [<c04fecb8>]
> (drm_atomic_helper_commit+0x140/0x148)
> [   17.069766]  r5:00000000 r4:eddafe80
> [   17.069784] [<c04feb78>] (drm_atomic_helper_commit) from
> [<c051c138>] (drm_atomic_commit+0x54/0x60)
> [   17.069794]  r7:eddafe80 r6:edcce800 r5:eddafe80 r4:00000000
> [   17.069809] [<c051c0e4>] (drm_atomic_commit) from [<c0501698>]
> (restore_fbdev_mode_atomic+0x19c/0x1f8)
> [   17.069819]  r7:eddafe80 r6:00000001 r5:0000003f r4:000000a0
> [   17.069832] [<c05014fc>] (restore_fbdev_mode_atomic) from
> [<c0501724>] (restore_fbdev_mode+0x30/0x168)
> [   17.069844]  r10:edf4bcec r9:edccea14 r8:00000000 r7:ed481c00
> r6:edf4bd00 r5:ed481cd0
> [   17.069851]  r4:ed481c00
> [   17.069868] [<c05016f4>] (restore_fbdev_mode) from [<c0504740>]
> (drm_fb_helper_restore_fbdev_mode_unlocked.part.8+0x28/0x7c)
> [   17.069879]  r10:edf4bcec r9:edccea14 r8:00000000 r7:edcce8f0
> r6:edf4bd00 r5:ed481cd0
> [   17.069886]  r4:ed481c00
> [   17.069901] [<c0504718>]
> (drm_fb_helper_restore_fbdev_mode_unlocked.part.8) from [<c05047cc>]
> (drm_fb_helper_restore_fbdev_mode_unlocked+0x38/0x44)
> [   17.069912]  r7:edcce8f0 r6:edf4bd00 r5:edcce800 r4:edcce800
> [   17.069926] [<c0504794>]
> (drm_fb_helper_restore_fbdev_mode_unlocked) from [<c0504e18>]
> (drm_fbdev_cma_restore_mode+0x18/0x1c)
> [   17.069949] [<c0504e00>] (drm_fbdev_cma_restore_mode) from
> [<bf0882ec>] (imx_drm_driver_lastclose+0x18/0x1c [imxdrm])
> [   17.069969] [<bf0882d4>] (imx_drm_driver_lastclose [imxdrm]) from
> [<c0508ec0>] (drm_lastclose+0x40/0xd4)
> [   17.069985] [<c0508e80>] (drm_lastclose) from [<c05091fc>]
> (drm_release+0x2a8/0x364)
> [   17.070002]  r5:edcce800 r4:edf4bc00
> [   17.070023] [<c0508f54>] (drm_release) from [<c022bf20>] (__fput+0x94/0x1e0)
> [   17.070035]  r10:00000008 r9:ed047b58 r8:00000000 r7:edb71c38
> r6:eea60610 r5:ed047b58
> [   17.070056]  r4:edcfc780
> [   17.070084] [<c022be8c>] (__fput) from [<c022c0cc>] (____fput+0x10/0x14)
> [   17.070112]  r10:00000000 r9:edcfc780 r8:c1087070 r7:ec855104
> r6:ec854c80 r5:ec8550d4
> [   17.070125]  r4:00000000
> [   17.070145] [<c022c0bc>] (____fput) from [<c0144754>]
> (task_work_run+0x9c/0xc0)
> [   17.070185] [<c01446b8>] (task_work_run) from [<c010cc70>]
> (do_work_pending+0x94/0xbc)
> [   17.070211]  r9:ed136000 r8:c0108da4 r7:ed137fb0 r6:c0108da4
> r5:ed136000 r4:00000004
> [   17.070238] [<c010cbdc>] (do_work_pending) from [<c0108c14>]
> (slow_work_pending+0xc/0x20)
> [   17.070251]  r7:00000006 r6:00000003 r5:bebfdcb4 r4:00000001
> [   17.070267] ---[ end trace b61d7b1acd1ba236 ]---
> [   17.357829] ------------[ cut here ]------------
> [   17.357887] WARNING: CPU: 2 PID: 757 at
> drivers/gpu/drm/drm_vblank.c:303
> drm_crtc_accurate_vblank_count+0x80/0x84
> [   17.357905] This function requires support for accurate vblank timestamps.
> [   17.357923] Modules linked in: bnep dw_hdmi_cec dw_hdmi_ahb_audio
> snd_soc_imx_sgtl5000 snd_soc_fsl_asoc_card snd_soc_imx_spdif
> snd_ac97_codec btsdio brcmfmac brcmutil coda videobuf2_dma_contig
> imx_vdoa v4l2_mem2mem videobuf2_vmalloc videobuf2_memops dw_hdmi_imx
> dw_hdmi cec imxdrm etnaviv imx_ipu_v3 binfmt_misc parport_pc ppdev lp
> parport
> [   17.358183] CPU: 2 PID: 757 Comm: Xorg Tainted: G        W
> 4.14.0-rc7-gd65d313-dirty #1
> [   17.358191] Hardware name: Freescale i.MX6 Quad/DualLite (Device Tree)
> [   17.358198] Backtrace:
> [   17.358224] [<c010d558>] (dump_backtrace) from [<c010d838>]
> (show_stack+0x18/0x1c)
> [   17.358236]  r7:c106eed0 r6:00000000 r5:60070093 r4:c106eed0
> [   17.358262] [<c010d820>] (show_stack) from [<c09ff10c>]
> (dump_stack+0xac/0xd8)
> [   17.358286] [<c09ff060>] (dump_stack) from [<c0122d78>] (__warn+0xec/0x104)
> [   17.358297]  r10:ed481c00 r9:c0527bd8 r8:0000012f r7:00000009
> r6:c0d4fc08 r5:00000000
> [   17.358305]  r4:ed137c80 r3:00000006
> [   17.358318] [<c0122c8c>] (__warn) from [<c0122dd0>]
> (warn_slowpath_fmt+0x40/0x48)
> [   17.358330]  r9:edccebe0 r8:00000001 r7:edcce800 r6:00000000
> r5:edcce800 r4:c0d50064
> [   17.358346] [<c0122d94>] (warn_slowpath_fmt) from [<c0527bd8>]
> (drm_crtc_accurate_vblank_count+0x80/0x84)
> [   17.358368]  r3:00000000 r2:c0d50064
> [   17.358389]  r4:edcce800
> [   17.358419] [<c0527b58>] (drm_crtc_accurate_vblank_count) from
> [<c052800c>] (drm_crtc_arm_vblank_event+0x30/0x64)
> [   17.358442]  r7:edcce800 r6:00000001 r5:edcce800 r4:eddb9280
> [   17.358491] [<c0527fdc>] (drm_crtc_arm_vblank_event) from
> [<bf0889bc>] (ipu_crtc_atomic_begin+0x50/0x80 [imxdrm])
> [   17.358517]  r5:edee2180 r4:edccf818
> [   17.358566] [<bf08896c>] (ipu_crtc_atomic_begin [imxdrm]) from
> [<c04fa720>] (drm_atomic_helper_commit_planes+0x8c/0x2a8)
> [   17.358586]  r5:edee2180 r4:00000018
> [   17.358619] [<c04fa694>] (drm_atomic_helper_commit_planes) from
> [<bf0881a4>] (imx_drm_atomic_commit_tail+0x30/0x144 [imxdrm])
> [   17.358647]  r10:ed481c00 r9:edccebe0 r8:ed422eb8 r7:edcce800
> r6:edee2180 r5:bf08b088
> [   17.358668]  r4:edee2180
> [   17.358714] [<bf088174>] (imx_drm_atomic_commit_tail [imxdrm]) from
> [<c04feb1c>] (commit_tail+0x48/0x8c)
> [   17.358732]  r10:ed481c00 r9:edccebe0 r8:ed422eb8 r7:edcce800
> r6:00000000 r5:bf08b088
> [   17.358740]  r4:edee2180 r3:bf088174
> [   17.358754] [<c04fead4>] (commit_tail) from [<c04fecb8>]
> (drm_atomic_helper_commit+0x140/0x148)
> [   17.358763]  r5:00000000 r4:edee2180
> [   17.358783] [<c04feb78>] (drm_atomic_helper_commit) from
> [<c051c138>] (drm_atomic_commit+0x54/0x60)
> [   17.358795]  r7:edee2180 r6:edcce800 r5:edee2180 r4:00000000
> [   17.358812] [<c051c0e4>] (drm_atomic_commit) from [<c0501698>]
> (restore_fbdev_mode_atomic+0x19c/0x1f8)
> [   17.358824]  r7:edee2180 r6:00000001 r5:0000003f r4:000000a0
> [   17.358838] [<c05014fc>] (restore_fbdev_mode_atomic) from
> [<c0501724>] (restore_fbdev_mode+0x30/0x168)
> [   17.358850]  r10:ed4748ec r9:edccea14 r8:00000000 r7:ed481c00
> r6:ed474900 r5:ed481cd0
> [   17.358857]  r4:ed481c00
> [   17.358895] [<c05016f4>] (restore_fbdev_mode) from [<c0504740>]
> (drm_fb_helper_restore_fbdev_mode_unlocked.part.8+0x28/0x7c)
> [   17.358922]  r10:ed4748ec r9:edccea14 r8:00000000 r7:edcce8f0
> r6:ed474900 r5:ed481cd0
> [   17.358943]  r4:ed481c00
> [   17.358965] [<c0504718>]
> (drm_fb_helper_restore_fbdev_mode_unlocked.part.8) from [<c05047cc>]
> (drm_fb_helper_restore_fbdev_mode_unlocked+0x38/0x44)
> [   17.358976]  r7:edcce8f0 r6:ed474900 r5:edcce800 r4:edcce800
> [   17.358992] [<c0504794>]
> (drm_fb_helper_restore_fbdev_mode_unlocked) from [<c0504e18>]
> (drm_fbdev_cma_restore_mode+0x18/0x1c)
> [   17.359021] [<c0504e00>] (drm_fbdev_cma_restore_mode) from
> [<bf0882ec>] (imx_drm_driver_lastclose+0x18/0x1c [imxdrm])
> [   17.359043] [<bf0882d4>] (imx_drm_driver_lastclose [imxdrm]) from
> [<c0508ec0>] (drm_lastclose+0x40/0xd4)
> [   17.359055] [<c0508e80>] (drm_lastclose) from [<c05091fc>]
> (drm_release+0x2a8/0x364)
> [   17.359064]  r5:edcce800 r4:ed474800
> [   17.359084] [<c0508f54>] (drm_release) from [<c022bf20>] (__fput+0x94/0x1e0)
> [   17.359097]  r10:00000008 r9:ed047b58 r8:00000000 r7:edb71c38
> r6:eea60610 r5:ed047b58
> [   17.359105]  r4:ed7fc140
> [   17.359117] [<c022be8c>] (__fput) from [<c022c0cc>] (____fput+0x10/0x14)
> [   17.359129]  r10:00000000 r9:ed7fc140 r8:c1087070 r7:ec855104
> r6:ec854c80 r5:ec8550d4
> [   17.359136]  r4:00000000
> [   17.359156] [<c022c0bc>] (____fput) from [<c0144754>]
> (task_work_run+0x9c/0xc0)
> [   17.359180] [<c01446b8>] (task_work_run) from [<c010cc70>]
> (do_work_pending+0x94/0xbc)
> [   17.359191]  r9:ed136000 r8:c0108da4 r7:ed137fb0 r6:c0108da4
> r5:ed136000 r4:00000004
> [   17.359205] [<c010cbdc>] (do_work_pending) from [<c0108c14>]
> (slow_work_pending+0xc/0x20)
> [   17.359215]  r7:00000006 r6:023ec1f0 r5:00000000 r4:0000000a
> [   17.359225] ---[ end trace b61d7b1acd1ba237 ]---
> [   17.378936] ------------[ cut here ]------------
> [   17.378971] WARNING: CPU: 3 PID: 794 at
> drivers/gpu/drm/drm_vblank.c:303
> drm_crtc_accurate_vblank_count+0x80/0x84
> [   17.378977] This function requires support for accurate vblank timestamps.
> [   17.378981] Modules linked in: bnep dw_hdmi_cec dw_hdmi_ahb_audio
> snd_soc_imx_sgtl5000 snd_soc_fsl_asoc_card snd_soc_imx_spdif
> snd_ac97_codec btsdio brcmfmac brcmutil coda videobuf2_dma_contig
> imx_vdoa v4l2_mem2mem videobuf2_vmalloc videobuf2_memops dw_hdmi_imx
> dw_hdmi cec imxdrm etnaviv imx_ipu_v3 binfmt_misc parport_pc ppdev lp
> parport
> [   17.379080] CPU: 3 PID: 794 Comm: (agetty) Tainted: G        W
>  4.14.0-rc7-gd65d313-dirty #1
> [   17.379087] Hardware name: Freescale i.MX6 Quad/DualLite (Device Tree)
> [   17.379091] Backtrace:
> [   17.379109] [<c010d558>] (dump_backtrace) from [<c010d838>]
> (show_stack+0x18/0x1c)
> [   17.379118]  r7:c106eed0 r6:00000000 r5:60070093 r4:c106eed0
> [   17.379137] [<c010d820>] (show_stack) from [<c09ff10c>]
> (dump_stack+0xac/0xd8)
> [   17.379155] [<c09ff060>] (dump_stack) from [<c0122d78>] (__warn+0xec/0x104)
> [   17.379164]  r10:ed481c00 r9:c0527bd8 r8:0000012f r7:00000009
> r6:c0d4fc08 r5:00000000
> [   17.379172]  r4:ed4339b8 r3:00000000
> [   17.379183] [<c0122c8c>] (__warn) from [<c0122dd0>]
> (warn_slowpath_fmt+0x40/0x48)
> [   17.379191]  r9:edccebe0 r8:00000001 r7:edcce800 r6:00000000
> r5:edcce800 r4:c0d50064
> [   17.379202] [<c0122d94>] (warn_slowpath_fmt) from [<c0527bd8>]
> (drm_crtc_accurate_vblank_count+0x80/0x84)
> [   17.379207]  r3:00000000 r2:c0d50064
> [   17.379211]  r4:edcce800
> [   17.379221] [<c0527b58>] (drm_crtc_accurate_vblank_count) from
> [<c052800c>] (drm_crtc_arm_vblank_event+0x30/0x64)
> [   17.379228]  r7:edcce800 r6:00000001 r5:edcce800 r4:edf18f00
> [   17.379270] [<c0527fdc>] (drm_crtc_arm_vblank_event) from
> [<bf0889bc>] (ipu_crtc_atomic_begin+0x50/0x80 [imxdrm])
> [   17.379276]  r5:ed6e9c80 r4:edccf818
> [   17.379300] [<bf08896c>] (ipu_crtc_atomic_begin [imxdrm]) from
> [<c04fa720>] (drm_atomic_helper_commit_planes+0x8c/0x2a8)
> [   17.379306]  r5:ed6e9c80 r4:00000018
> [   17.379324] [<c04fa694>] (drm_atomic_helper_commit_planes) from
> [<bf0881a4>] (imx_drm_atomic_commit_tail+0x30/0x144 [imxdrm])
> [   17.379333]  r10:ed481c00 r9:edccebe0 r8:ed422eb8 r7:edcce800
> r6:ed6e9c80 r5:bf08b088
> [   17.379337]  r4:ed6e9c80
> [   17.379357] [<bf088174>] (imx_drm_atomic_commit_tail [imxdrm]) from
> [<c04feb1c>] (commit_tail+0x48/0x8c)
> [   17.379368]  r10:ed481c00 r9:edccebe0 r8:ed422eb8 r7:edcce800
> r6:00000000 r5:bf08b088
> [   17.379372]  r4:ed6e9c80 r3:bf088174
> [   17.379382] [<c04fead4>] (commit_tail) from [<c04fecb8>]
> (drm_atomic_helper_commit+0x140/0x148)
> [   17.379387]  r5:00000000 r4:ed6e9c80
> [   17.379402] [<c04feb78>] (drm_atomic_helper_commit) from
> [<c051c138>] (drm_atomic_commit+0x54/0x60)
> [   17.379409]  r7:ed6e9c80 r6:edcce800 r5:ed6e9c80 r4:00000000
> [   17.379422] [<c051c0e4>] (drm_atomic_commit) from [<c0501698>]
> (restore_fbdev_mode_atomic+0x19c/0x1f8)
> [   17.379429]  r7:ed6e9c80 r6:00000001 r5:0000003f r4:000000a0
> [   17.379440] [<c05014fc>] (restore_fbdev_mode_atomic) from
> [<c05019a4>] (drm_fb_helper_pan_display+0xb0/0x1bc)
> [   17.379449]  r10:00000000 r9:c04feb78 r8:ed657c00 r7:ed4cee1c
> r6:00000000 r5:ed481cd0
> [   17.379453]  r4:ed481c00
> [   17.379473] [<c05018f4>] (drm_fb_helper_pan_display) from
> [<c048bc58>] (fb_pan_display+0xd4/0x140)
> [   17.379486]  r10:00000000 r9:ed4cee00 r8:00000438 r7:00000000
> r6:00000000 r5:ed4cee1c
> [   17.379491]  r4:ed657c00 r3:00000000
> [   17.379506] [<c048bb84>] (fb_pan_display) from [<c049a664>]
> (bit_update_start+0x1c/0x38)
> [   17.379514]  r10:00000000 r9:ed4cee00 r8:c17e5bc8 r7:c17e5a70
> r6:ee808c00 r5:ed657c00
> [   17.379519]  r4:ed4cee00 r3:c049a648
> [   17.379529] [<c049a648>] (bit_update_start) from [<c049934c>]
> (fbcon_switch+0x340/0x558)
> [   17.379534]  r5:ed657c00 r4:ee808dc8
> [   17.379551] [<c049900c>] (fbcon_switch) from [<c04db61c>]
> (redraw_screen+0x150/0x248)
> [   17.379559]  r10:0000000a r9:ee808c00 r8:00000000 r7:00000001
> r6:ee808e34 r5:00000000
> [   17.379563]  r4:ee808c00
> [   17.379572] [<c04db4cc>] (redraw_screen) from [<c04db848>]
> (csi_J+0x134/0x160)
> [   17.379580]  r8:00000000 r7:c0bb934c r6:ee808e34 r5:ed40a400 r4:ee808c00
> [   17.379591] [<c04db714>] (csi_J) from [<c04df7cc>]
> (do_con_trol+0x14b8/0x1688)
> [   17.379598]  r7:c0bb934c r6:ed40a400 r5:ed40a400 r4:ee808c00
> [   17.379608] [<c04de314>] (do_con_trol) from [<c04dfba8>]
> (do_con_write.part.9+0x20c/0x95c)
> [   17.379616]  r10:0000000a r9:ee808c00 r8:00000000 r7:c0bb934c
> r6:ed40a400 r5:ffffffff
> [   17.379620]  r4:0000004a
> [   17.379629] [<c04df99c>] (do_con_write.part.9) from [<c04e03dc>]
> (con_write+0x80/0x90)
> [   17.379638]  r10:00000000 r9:f290629c r8:edef8140 r7:c0bb934c
> r6:ed40a400 r5:0000000a
> [   17.379642]  r4:ffffe000
> [   17.379663] [<c04e035c>] (con_write) from [<c04c7dc8>]
> (n_tty_write+0x1c8/0x45c)
> [   17.379670]  r7:c0bb934c r6:ed408c00 r5:0000000a r4:ed40a400
> [   17.379681] [<c04c7c00>] (n_tty_write) from [<c04c3e80>]
> (tty_write+0x1f8/0x314)
> [   17.379689]  r10:00000400 r9:ed432000 r8:00000000 r7:0000000a
> r6:0051055c r5:0000000a
> [   17.379693]  r4:ed40a400
> [   17.379712] [<c04c3c88>] (tty_write) from [<c022ade8>]
> (__vfs_write+0x34/0x134)
> [   17.379720]  r10:00000000 r9:0000000a r8:ed433f78 r7:ed433f78
> r6:0051055c r5:c04c3c88
> [   17.379724]  r4:edef8140
> [   17.379735] [<c022adb4>] (__vfs_write) from [<c022b06c>]
> (vfs_write+0xac/0x170)
> [   17.379743]  r10:00000000 r9:0000000a r8:00000000 r7:ed433f78
> r6:0051055c r5:edef8140
> [   17.379747]  r4:0000000a
> [   17.379758] [<c022afc0>] (vfs_write) from [<c022b248>] (SyS_write+0x44/0x98)
> [   17.379766]  r9:0000000a r8:0051055c r7:00000000 r6:00000000
> r5:edef8140 r4:edef8140
> [   17.379780] [<c022b204>] (SyS_write) from [<c0108be0>]
> (ret_fast_syscall+0x0/0x28)
> [   17.379789]  r9:ed432000 r8:c0108da4 r7:00000004 r6:00000003
> r5:0051055c r4:0000000a
> [   17.379794] ---[ end trace b61d7b1acd1ba238 ]---
> [   17.525433] ------------[ cut here ]------------
> [   17.525466] WARNING: CPU: 0 PID: 730 at
> drivers/gpu/drm/drm_vblank.c:303
> drm_crtc_accurate_vblank_count+0x80/0x84
> [   17.525473] This function requires support for accurate vblank timestamps.
> [   17.525477] Modules linked in: bnep dw_hdmi_cec dw_hdmi_ahb_audio
> snd_soc_imx_sgtl5000 snd_soc_fsl_asoc_card snd_soc_imx_spdif
> snd_ac97_codec btsdio brcmfmac brcmutil coda videobuf2_dma_contig
> imx_vdoa v4l2_mem2mem videobuf2_vmalloc videobuf2_memops dw_hdmi_imx
> dw_hdmi cec imxdrm etnaviv imx_ipu_v3 binfmt_misc parport_pc ppdev lp
> parport
> [   17.525580] CPU: 0 PID: 730 Comm: kworker/0:3 Tainted: G        W
>     4.14.0-rc7-gd65d313-dirty #1
> [   17.525585] Hardware name: Freescale i.MX6 Quad/DualLite (Device Tree)
> [   17.525608] Workqueue: events console_callback
> [   17.525615] Backtrace:
> [   17.525637] [<c010d558>] (dump_backtrace) from [<c010d838>]
> (show_stack+0x18/0x1c)
> [   17.525646]  r7:c106eed0 r6:00000000 r5:60080093 r4:c106eed0
> [   17.525674] [<c010d820>] (show_stack) from [<c09ff10c>]
> (dump_stack+0xac/0xd8)
> [   17.525702] [<c09ff060>] (dump_stack) from [<c0122d78>] (__warn+0xec/0x104)
> [   17.525725]  r10:ed481c00 r9:c0527bd8 r8:0000012f r7:00000009
> r6:c0d4fc08 r5:00000000
> [   17.525742]  r4:ed605b48 r3:00000000
> [   17.525765] [<c0122c8c>] (__warn) from [<c0122dd0>]
> (warn_slowpath_fmt+0x40/0x48)
> [   17.525790]  r9:edccebe0 r8:00000001 r7:edcce800 r6:00000000
> r5:edcce800 r4:c0d50064
> [   17.525809] [<c0122d94>] (warn_slowpath_fmt) from [<c0527bd8>]
> (drm_crtc_accurate_vblank_count+0x80/0x84)
> [   17.525815]  r3:00000000 r2:c0d50064
> [   17.525821]  r4:edcce800
> [   17.525845] [<c0527b58>] (drm_crtc_accurate_vblank_count) from
> [<c052800c>] (drm_crtc_arm_vblank_event+0x30/0x64)
> [   17.525863]  r7:edcce800 r6:00000001 r5:edcce800 r4:ed03a300
> [   17.525928] [<c0527fdc>] (drm_crtc_arm_vblank_event) from
> [<bf0889bc>] (ipu_crtc_atomic_begin+0x50/0x80 [imxdrm])
> [   17.525938]  r5:ed03ab80 r4:edccf818
> [   17.525966] [<bf08896c>] (ipu_crtc_atomic_begin [imxdrm]) from
> [<c04fa720>] (drm_atomic_helper_commit_planes+0x8c/0x2a8)
> [   17.525972]  r5:ed03ab80 r4:00000018
> [   17.525992] [<c04fa694>] (drm_atomic_helper_commit_planes) from
> [<bf0881a4>] (imx_drm_atomic_commit_tail+0x30/0x144 [imxdrm])
> [   17.526016]  r10:ed481c00 r9:edccebe0 r8:ed422eb8 r7:edcce800
> r6:ed03ab80 r5:bf08b088
> [   17.526028]  r4:ed03ab80
> [   17.526069] [<bf088174>] (imx_drm_atomic_commit_tail [imxdrm]) from
> [<c04feb1c>] (commit_tail+0x48/0x8c)
> [   17.526091]  r10:ed481c00 r9:edccebe0 r8:ed422eb8 r7:edcce800
> r6:00000000 r5:bf08b088
> [   17.526097]  r4:ed03ab80 r3:bf088174
> [   17.526108] [<c04fead4>] (commit_tail) from [<c04fecb8>]
> (drm_atomic_helper_commit+0x140/0x148)
> [   17.526114]  r5:00000000 r4:ed03ab80
> [   17.526134] [<c04feb78>] (drm_atomic_helper_commit) from
> [<c051c138>] (drm_atomic_commit+0x54/0x60)
> [   17.526141]  r7:ed03ab80 r6:edcce800 r5:ed03ab80 r4:00000000
> [   17.526154] [<c051c0e4>] (drm_atomic_commit) from [<c0501698>]
> (restore_fbdev_mode_atomic+0x19c/0x1f8)
> [   17.526161]  r7:ed03ab80 r6:00000001 r5:0000003f r4:000000a0
> [   17.526172] [<c05014fc>] (restore_fbdev_mode_atomic) from
> [<c05019a4>] (drm_fb_helper_pan_display+0xb0/0x1bc)
> [   17.526182]  r10:00000000 r9:c04feb78 r8:ed657c00 r7:ed4cee1c
> r6:00000000 r5:ed481cd0
> [   17.526186]  r4:ed481c00
> [   17.526221] [<c05018f4>] (drm_fb_helper_pan_display) from
> [<c048bc58>] (fb_pan_display+0xd4/0x140)
> [   17.526242]  r10:00000000 r9:ed4cee00 r8:00000438 r7:00000000
> r6:00000000 r5:ed4cee1c
> [   17.526258]  r4:ed657c00 r3:00000000
> [   17.526294] [<c048bb84>] (fb_pan_display) from [<c049a664>]
> (bit_update_start+0x1c/0x38)
> [   17.526308]  r10:00000000 r9:ed4cee00 r8:c17e5e80 r7:c17e5a70
> r6:edf63000 r5:ed657c00
> [   17.526313]  r4:ed4cee00 r3:c049a648
> [   17.526326] [<c049a648>] (bit_update_start) from [<c049934c>]
> (fbcon_switch+0x340/0x558)
> [   17.526336]  r5:ed657c00 r4:edf631c8
> [   17.526367] [<c049900c>] (fbcon_switch) from [<c04db61c>]
> (redraw_screen+0x150/0x248)
> [   17.526389]  r10:00000001 r9:00000000 r8:ee808c00 r7:00000001
> r6:c17ebe94 r5:00000001
> [   17.526403]  r4:edf63000
> [   17.526440] [<c04db4cc>] (redraw_screen) from [<c04d2158>]
> (complete_change_console+0x44/0xe0)
> [   17.526451]  r8:eef9ed00 r7:00000000 r6:eef9bcc0 r5:00000000 r4:edf63000
> [   17.526471] [<c04d2114>] (complete_change_console) from
> [<c04d3c44>] (change_console+0x74/0xa0)
> [   17.526488]  r7:ed605ef8 r6:eef9bcc0 r5:ee808c00 r4:edf63000
> [   17.526512] [<c04d3bd0>] (change_console) from [<c04de00c>]
> (console_callback+0xf0/0x150)
> [   17.526529]  r5:c102e7ac r4:c17ebe94
> [   17.526563] [<c04ddf1c>] (console_callback) from [<c013f1c4>]
> (process_one_work+0x258/0x4f0)
> [   17.526572]  r5:ec821b00 r4:c102e7f8
> [   17.526594] [<c013ef6c>] (process_one_work) from [<c01400e8>]
> (worker_thread+0x58/0x59c)
> [   17.526615]  r10:ed604000 r9:eef9bcf4 r8:c1004900 r7:00000008
> r6:ec821b18 r5:eef9bcc0
> [   17.526629]  r4:ec821b00
> [   17.526654] [<c0140090>] (worker_thread) from [<c01462c0>]
> (kthread+0x140/0x16c)
> [   17.526672]  r10:ee87de74 r9:eddaf238 r8:ec821b00 r7:ed604000
> r6:ec822640 r5:00000000
> [   17.526677]  r4:eddaf200
> [   17.526694] [<c0146180>] (kthread) from [<c0108c88>]
> (ret_from_fork+0x14/0x2c)
> [   17.526702]  r10:00000000 r9:00000000 r8:00000000 r7:00000000
> r6:00000000 r5:c0146180
> [   17.526706]  r4:ec822640
> [   17.526711] ---[ end trace b61d7b1acd1ba239 ]---
> [   17.555881] [drm] Got external EDID base block and 1 extension from
> "edid/ktc_edid.bin" for connector "HDMI-A-1"
> [   17.555976] dw_hdmi_connector_get_modes:1906: dwhdmi-imx
> 120000.hdmi: got edid: width[48] x height[27]
> [   17.558787] [drm] Got external EDID base block and 1 extension from
> "edid/ktc_edid.bin" for connector "HDMI-A-1"
> [   17.558830] dw_hdmi_connector_get_modes:1906: dwhdmi-imx
> 120000.hdmi: got edid: width[48] x height[27]
> [   17.626215] dw_hdmi_phy_power_off:1096: dwhdmi-imx 120000.hdmi: PHY
> powered down in 0 iterations
> [   17.631695] dw_hdmi_setup:1681: dwhdmi-imx 120000.hdmi: CEA mode used vic=16
> [   17.631720] hdmi_av_composer:1495: dwhdmi-imx 120000.hdmi: final
> pixclk = 148500000
> [   17.631774] dw_hdmi_phy_power_off:1096: dwhdmi-imx 120000.hdmi: PHY
> powered down in 0 iterations
> [   17.642541] dw_hdmi_phy_power_on:1133: dwhdmi-imx 120000.hdmi: PHY
> PLL locked 1 iterations
> [   17.642569] dw_hdmi_phy_power_off:1096: dwhdmi-imx 120000.hdmi: PHY
> powered down in 0 iterations
> [   17.654801] dw_hdmi_phy_power_on:1133: dwhdmi-imx 120000.hdmi: PHY
> PLL locked 1 iterations
> [   17.654833] dw_hdmi_setup:1729: dwhdmi-imx 120000.hdmi: sink has
> audio support
> [   17.654898] hdmi_set_clk_regenerator:521: dwhdmi-imx 120000.hdmi:
> hdmi_set_clk_regenerator: fs=48000Hz ftdms=148.500MHz N=6144
> cts=148500
> [   17.654980] dw_hdmi_setup:1738: dwhdmi-imx 120000.hdmi:
> dw_hdmi_setup HDMI mode
> [   17.655499] ------------[ cut here ]------------
> [   17.655548] WARNING: CPU: 3 PID: 757 at
> drivers/gpu/drm/drm_vblank.c:303
> drm_crtc_accurate_vblank_count+0x80/0x84
> [   17.655556] This function requires support for accurate vblank timestamps.
> [   17.655565] Modules linked in: bnep dw_hdmi_cec dw_hdmi_ahb_audio
> snd_soc_imx_sgtl5000 snd_soc_fsl_asoc_card snd_soc_imx_spdif
> snd_ac97_codec btsdio brcmfmac brcmutil coda videobuf2_dma_contig
> imx_vdoa v4l2_mem2mem videobuf2_vmalloc videobuf2_memops dw_hdmi_imx
> dw_hdmi cec imxdrm etnaviv imx_ipu_v3 binfmt_misc parport_pc ppdev lp
> parport
> [   17.655741] CPU: 3 PID: 757 Comm: Xorg Tainted: G        W
> 4.14.0-rc7-gd65d313-dirty #1
> [   17.655748] Hardware name: Freescale i.MX6 Quad/DualLite (Device Tree)
> [   17.655755] Backtrace:
> [   17.655778] [<c010d558>] (dump_backtrace) from [<c010d838>]
> (show_stack+0x18/0x1c)
> [   17.655789]  r7:c106eed0 r6:00000000 r5:600e0093 r4:c106eed0
> [   17.655807] [<c010d820>] (show_stack) from [<c09ff10c>]
> (dump_stack+0xac/0xd8)
> [   17.655825] [<c09ff060>] (dump_stack) from [<c0122d78>] (__warn+0xec/0x104)
> [   17.655837]  r10:000000ab r9:c0527bd8 r8:0000012f r7:00000009
> r6:c0d4fc08 r5:00000000
> [   17.655845]  r4:ed137c08 r3:00000006
> [   17.655857] [<c0122c8c>] (__warn) from [<c0122dd0>]
> (warn_slowpath_fmt+0x40/0x48)
> [   17.655869]  r9:00000000 r8:00000001 r7:edcce800 r6:00000000
> r5:edcce800 r4:c0d50064
> [   17.655883] [<c0122d94>] (warn_slowpath_fmt) from [<c0527bd8>]
> (drm_crtc_accurate_vblank_count+0x80/0x84)
> [   17.655891]  r3:00000000 r2:c0d50064
> [   17.655897]  r4:edcce800
> [   17.655910] [<c0527b58>] (drm_crtc_accurate_vblank_count) from
> [<c052800c>] (drm_crtc_arm_vblank_event+0x30/0x64)
> [   17.655920]  r7:edcce800 r6:00000001 r5:edcce800 r4:ee3b0780
> [   17.655952] [<c0527fdc>] (drm_crtc_arm_vblank_event) from
> [<bf0889bc>] (ipu_crtc_atomic_begin+0x50/0x80 [imxdrm])
> [   17.655960]  r5:ee3b0d80 r4:edccf818
> [   17.655984] [<bf08896c>] (ipu_crtc_atomic_begin [imxdrm]) from
> [<c04fa720>] (drm_atomic_helper_commit_planes+0x8c/0x2a8)
> [   17.655993]  r5:ee3b0d80 r4:00000018
> [   17.656012] [<c04fa694>] (drm_atomic_helper_commit_planes) from
> [<bf0881a4>] (imx_drm_atomic_commit_tail+0x30/0x144 [imxdrm])
> [   17.656024]  r10:000000ab r9:00000000 r8:edccf818 r7:edcce800
> r6:ee3b0d80 r5:bf08b088
> [   17.656031]  r4:ee3b0d80
> [   17.656053] [<bf088174>] (imx_drm_atomic_commit_tail [imxdrm]) from
> [<c04feb1c>] (commit_tail+0x48/0x8c)
> [   17.656064]  r10:000000ab r9:00000000 r8:edccf818 r7:edcce800
> r6:00000000 r5:bf08b088
> [   17.656072]  r4:ee3b0d80 r3:bf088174
> [   17.656085] [<c04fead4>] (commit_tail) from [<c04fecb8>]
> (drm_atomic_helper_commit+0x140/0x148)
> [   17.656093]  r5:00000000 r4:ee3b0d80
> [   17.656109] [<c04feb78>] (drm_atomic_helper_commit) from
> [<c051c138>] (drm_atomic_commit+0x54/0x60)
> [   17.656120]  r7:00000000 r6:edcce800 r5:ee3b0d80 r4:00000000
> [   17.656133] [<c051c0e4>] (drm_atomic_commit) from [<c051d2fc>]
> (drm_atomic_connector_commit_dpms+0xf0/0x100)
> [   17.656143]  r7:00000000 r6:ed661810 r5:ee3b0d80 r4:00000001
> [   17.656156] [<c051d20c>] (drm_atomic_connector_commit_dpms) from
> [<c0522a64>] (drm_mode_obj_set_property_ioctl+0x1b4/0x2ac)
> [   17.656167]  r9:ee3b0d80 r8:00000000 r7:00000000 r6:ed137d78
> r5:ed661824 r4:eddafa80
> [   17.656181] [<c05228b0>] (drm_mode_obj_set_property_ioctl) from
> [<c0521378>] (drm_mode_connector_property_set_ioctl+0x40/0x48)
> [   17.656193]  r10:000000ab r9:c01064ab r8:ed137e60 r7:c0521338
> r6:edcce800 r5:00000000
> [   17.656199]  r4:00000000
> [   17.656215] [<c0521338>] (drm_mode_connector_property_set_ioctl)
> from [<c050a7e0>] (drm_ioctl_kernel+0x70/0xb0)
> [   17.656223]  r5:ed434400 r4:0000001a
> [   17.656235] [<c050a770>] (drm_ioctl_kernel) from [<c050ac78>]
> (drm_ioctl+0x2a4/0x3ac)
> [   17.656246]  r9:c01064ab r8:ed434400 r7:ed137e60 r6:c0b45b9c
> r5:00000010 r4:00000010
> [   17.656261] [<c050a9d4>] (drm_ioctl) from [<c023eab8>]
> (do_vfs_ioctl+0xac/0xa2c)
> [   17.656272]  r10:00000000 r9:ed136000 r8:0000000b r7:c023f474
> r6:ed14cf00 r5:ed047b58
> [   17.656279]  r4:beb7c7d0
> [   17.656290] [<c023ea0c>] (do_vfs_ioctl) from [<c023f474>]
> (SyS_ioctl+0x3c/0x64)
> [   17.656301]  r10:00000000 r9:ed136000 r8:beb7c7d0 r7:c01064ab
> r6:ed14cf00 r5:0000000b
> [   17.656308]  r4:ed14cf00
> [   17.656323] [<c023f438>] (SyS_ioctl) from [<c0108be0>]
> (ret_fast_syscall+0x0/0x28)
> [   17.656334]  r9:ed136000 r8:c0108da4 r7:00000036 r6:c01064ab
> r5:beb7c7d0 r4:00000000
> [   17.656342] ---[ end trace b61d7b1acd1ba23a ]---
> [   18.847644] ------------[ cut here ]------------
> [   18.847674] WARNING: CPU: 2 PID: 757 at
> drivers/gpu/drm/drm_vblank.c:303
> drm_crtc_accurate_vblank_count+0x80/0x84
> [   18.847683] This function requires support for accurate vblank timestamps.
> [   18.847689] Modules linked in: bnep dw_hdmi_cec dw_hdmi_ahb_audio
> snd_soc_imx_sgtl5000 snd_soc_fsl_asoc_card snd_soc_imx_spdif
> snd_ac97_codec btsdio brcmfmac brcmutil coda videobuf2_dma_contig
> imx_vdoa v4l2_mem2mem videobuf2_vmalloc videobuf2_memops dw_hdmi_imx
> dw_hdmi cec imxdrm etnaviv imx_ipu_v3 binfmt_misc parport_pc ppdev lp
> parport
> [   18.847872] CPU: 2 PID: 757 Comm: Xorg Tainted: G        W
> 4.14.0-rc7-gd65d313-dirty #1
> [   18.847879] Hardware name: Freescale i.MX6 Quad/DualLite (Device Tree)
> [   18.847886] Backtrace:
> [   18.847907] [<c010d558>] (dump_backtrace) from [<c010d838>]
> (show_stack+0x18/0x1c)
> [   18.847918]  r7:c106eed0 r6:00000000 r5:60000093 r4:c106eed0
> [   18.847937] [<c010d820>] (show_stack) from [<c09ff10c>]
> (dump_stack+0xac/0xd8)
> [   18.847954] [<c09ff060>] (dump_stack) from [<c0122d78>] (__warn+0xec/0x104)
> [   18.847967]  r10:000000ab r9:c0527bd8 r8:0000012f r7:00000009
> r6:c0d4fc08 r5:00000000
> [   18.847975]  r4:ed137c08 r3:00000006
> [   18.847989] [<c0122c8c>] (__warn) from [<c0122dd0>]
> (warn_slowpath_fmt+0x40/0x48)
> [   18.848000]  r9:00000000 r8:00000001 r7:edcce800 r6:00000000
> r5:edcce800 r4:c0d50064
> [   18.848013] [<c0122d94>] (warn_slowpath_fmt) from [<c0527bd8>]
> (drm_crtc_accurate_vblank_count+0x80/0x84)
> [   18.848021]  r3:00000000 r2:c0d50064
> [   18.848028]  r4:edcce800
> [   18.848041] [<c0527b58>] (drm_crtc_accurate_vblank_count) from
> [<c052800c>] (drm_crtc_arm_vblank_event+0x30/0x64)
> [   18.848051]  r7:edcce800 r6:00000001 r5:edcce800 r4:ed032080
> [   18.848081] [<c0527fdc>] (drm_crtc_arm_vblank_event) from
> [<bf0889bc>] (ipu_crtc_atomic_begin+0x50/0x80 [imxdrm])
> [   18.848090]  r5:ed032780 r4:edccf818
> [   18.848116] [<bf08896c>] (ipu_crtc_atomic_begin [imxdrm]) from
> [<c04fa720>] (drm_atomic_helper_commit_planes+0x8c/0x2a8)
> [   18.848124]  r5:ed032780 r4:00000018
> [   18.848144] [<c04fa694>] (drm_atomic_helper_commit_planes) from
> [<bf0881a4>] (imx_drm_atomic_commit_tail+0x30/0x144 [imxdrm])
> [   18.848156]  r10:000000ab r9:00000000 r8:edccf818 r7:edcce800
> r6:ed032780 r5:bf08b088
> [   18.848163]  r4:ed032780
> [   18.848184] [<bf088174>] (imx_drm_atomic_commit_tail [imxdrm]) from
> [<c04feb1c>] (commit_tail+0x48/0x8c)
> [   18.848196]  r10:000000ab r9:00000000 r8:edccf818 r7:edcce800
> r6:00000000 r5:bf08b088
> [   18.848204]  r4:ed032780 r3:bf088174
> [   18.848217] [<c04fead4>] (commit_tail) from [<c04fecb8>]
> (drm_atomic_helper_commit+0x140/0x148)
> [   18.848225]  r5:00000000 r4:ed032780
> [   18.848242] [<c04feb78>] (drm_atomic_helper_commit) from
> [<c051c138>] (drm_atomic_commit+0x54/0x60)
> [   18.848252]  r7:00000000 r6:edcce800 r5:ed032780 r4:00000000
> [   18.848265] [<c051c0e4>] (drm_atomic_commit) from [<c051d2fc>]
> (drm_atomic_connector_commit_dpms+0xf0/0x100)
> [   18.848275]  r7:00000000 r6:ed661810 r5:ed032780 r4:00000001
> [   18.848288] [<c051d20c>] (drm_atomic_connector_commit_dpms) from
> [<c0522a64>] (drm_mode_obj_set_property_ioctl+0x1b4/0x2ac)
> [   18.848300]  r9:ed032780 r8:00000000 r7:00000000 r6:ed137d78
> r5:ed661824 r4:eddafa80
> [   18.848314] [<c05228b0>] (drm_mode_obj_set_property_ioctl) from
> [<c0521378>] (drm_mode_connector_property_set_ioctl+0x40/0x48)
> [   18.848326]  r10:000000ab r9:c01064ab r8:ed137e60 r7:c0521338
> r6:edcce800 r5:00000000
> [   18.848333]  r4:00000000
> [   18.848349] [<c0521338>] (drm_mode_connector_property_set_ioctl)
> from [<c050a7e0>] (drm_ioctl_kernel+0x70/0xb0)
> [   18.848357]  r5:ed434400 r4:0000001a
> [   18.848368] [<c050a770>] (drm_ioctl_kernel) from [<c050ac78>]
> (drm_ioctl+0x2a4/0x3ac)
> [   18.848380]  r9:c01064ab r8:ed434400 r7:ed137e60 r6:c0b45b9c
> r5:00000010 r4:00000010
> [   18.848395] [<c050a9d4>] (drm_ioctl) from [<c023eab8>]
> (do_vfs_ioctl+0xac/0xa2c)
> [   18.848406]  r10:00000000 r9:ed136000 r8:0000000b r7:c023f474
> r6:ed14cf00 r5:ed047b58
> [   18.848413]  r4:beb7cbb0
> [   18.848424] [<c023ea0c>] (do_vfs_ioctl) from [<c023f474>]
> (SyS_ioctl+0x3c/0x64)
> [   18.848436]  r10:00000000 r9:ed136000 r8:beb7cbb0 r7:c01064ab
> r6:ed14cf00 r5:0000000b
> [   18.848442]  r4:ed14cf00
> [   18.848459] [<c023f438>] (SyS_ioctl) from [<c0108be0>]
> (ret_fast_syscall+0x0/0x28)
> [   18.848470]  r9:ed136000 r8:c0108da4 r7:00000036 r6:c01064ab
> r5:beb7cbb0 r4:00000000
> [   18.848478] ---[ end trace b61d7b1acd1ba23b ]---
> ubuntu@picolo:~$
>
> On Thu, Nov 9, 2017 at 3:01 PM, Jani Nikula <jani.nikula@xxxxxxxxxxxxxxx> wrote:
>> On Thu, 09 Nov 2017, Luís Mendes <luis.p.mendes@xxxxxxxxx> wrote:
>>> Hi Jani,
>>>
>>> I tried:
>>> git clone git://people.freedesktop.org/~airlied/linux -b drm-next
>>> --depth=1 --single-branch
>>>
>>> I got this:
>>> EDID isn't loaded from file
>>>
>>> # cat /proc/cmdline
>>> console=ttymxc0,115200 root=/dev/sda2 rw video=HDMI-A-1:1920x1080M@60
>>> drm.edid_firmware=edid/ktc_edid.bin dw_hdmi.dyndbg=+pfl cma=128M
>>
>> Please try adding D at the end of your video= parameter to force
>> connector on. Otherwise it'll do a ddc probe which apparently fails with
>> your display.
>>
>> BR,
>> Jani.
>>
>>>
>>> #zcat /proc/config.gz  | grep EDID
>>> CONFIG_DRM_LOAD_EDID_FIRMWARE=y
>>> # CONFIG_FIRMWARE_EDID is not set
>>>
>>> #cat /sys/class/drm/card1-HDMI-A-1/edid
>>> <empty>
>>>
>>> dmesg output follows below...
>>>
>>> Regards,
>>> Luís Mendes
>>>
>>> [    7.381500] dwhdmi-imx 120000.hdmi: Detected HDMI TX controller
>>> v1.30a with HDCP (DWC HDMI 3D TX PHY)
>>> [    7.409108] hdmi_set_clk_regenerator:521: dwhdmi-imx 120000.hdmi:
>>> hdmi_set_clk_regenerator: fs=48000Hz ftdms=74.250MHz N=6144 cts=74250
>>> [    7.411001] dw_hdmi_irq:2146: dwhdmi-imx 120000.hdmi: EVENT=plugin
>>> [    7.421524] imx-drm display-subsystem: bound 120000.hdmi (ops
>>> dw_hdmi_imx_ops [dw_hdmi_imx])
>>> [    7.481948] dw_hdmi_connector_get_modes:1917: dwhdmi-imx
>>> 120000.hdmi: failed to get edid
>>> [    7.537018] fsl-asoc-card sound: sgtl5000 <-> 2028000.ssi mapping ok
>>> [    7.549254] ------------[ cut here ]------------
>>> [    7.549303] WARNING: CPU: 2 PID: 219 at
>>> drivers/gpu/drm/drm_vblank.c:303
>>> drm_crtc_accurate_vblank_count+0x80/0x84
>>> [    7.549308] This function requires support for accurate vblank timestamps.
>>> [    7.549312] Modules linked in: snd_soc_imx_spdif(+)
>>> snd_soc_fsl_asoc_card(+) snd_ac97_codec coda videobuf2_dma_contig
>>> imx_vdoa v4l2_mem2mem videobuf2_vmalloc videobuf2_memops dw_hdmi_imx
>>> imxdrm(+) dw_hdmi cec etnaviv imx_ipu_v3 binfmt_misc parport_pc ppdev
>>> lp parport
>>> [    7.549396] CPU: 2 PID: 219 Comm: systemd-udevd Tainted: G        W
>>>       4.14.0-rc7-gd65d313-dirty #1
>>> [    7.549401] Hardware name: Freescale i.MX6 Quad/DualLite (Device Tree)
>>> [    7.549405] Backtrace:
>>> [    7.549427] [<c010d558>] (dump_backtrace) from [<c010d838>]
>>> (show_stack+0x18/0x1c)
>>> [    7.549436]  r7:c106eed0 r6:00000000 r5:600d0193 r4:c106eed0
>>> [    7.549465] [<c010d820>] (show_stack) from [<c09ff10c>]
>>> (dump_stack+0xac/0xd8)
>>> [    7.549486] [<c09ff060>] (dump_stack) from [<c0122d78>] (__warn+0xec/0x104)
>>> [    7.549496]  r10:edf56e00 r9:c0527bd8 r8:0000012f r7:00000009
>>> r6:c0d4fc08 r5:00000000
>>> [    7.549501]  r4:edd15688 r3:00000000
>>> [    7.549514] [<c0122c8c>] (__warn) from [<c0122dd0>]
>>> (warn_slowpath_fmt+0x40/0x48)
>>> [    7.549523]  r9:edc2f3e0 r8:00000001 r7:edc2f000 r6:00000000
>>> r5:edc2f000 r4:c0d50064
>>> [    7.549535] [<c0122d94>] (warn_slowpath_fmt) from [<c0527bd8>]
>>> (drm_crtc_accurate_vblank_count+0x80/0x84)
>>> [    7.549540]  r3:00000000 r2:c0d50064
>>> [    7.549544]  r4:edc2f000
>>> [    7.549553] [<c0527b58>] (drm_crtc_accurate_vblank_count) from
>>> [<c052800c>] (drm_crtc_arm_vblank_event+0x30/0x64)
>>> [    7.549560]  r7:edc2f000 r6:00000001 r5:edc2f000 r4:eeb3e400
>>> [    7.549614] [<c0527fdc>] (drm_crtc_arm_vblank_event) from
>>> [<bf0a89bc>] (ipu_crtc_atomic_begin+0x50/0x80 [imxdrm])
>>> [    7.549620]  r5:eeb3e680 r4:edc2b018
>>> [    7.549653] [<bf0a896c>] (ipu_crtc_atomic_begin [imxdrm]) from
>>> [<c04fa720>] (drm_atomic_helper_commit_planes+0x8c/0x2a8)
>>> [    7.549660]  r5:eeb3e680 r4:00000018
>>> [    7.549682] [<c04fa694>] (drm_atomic_helper_commit_planes) from
>>> [<bf0a81a4>] (imx_drm_atomic_commit_tail+0x30/0x144 [imxdrm])
>>> [    7.549691]  r10:edf56e00 r9:edc2f3e0 r8:edfafdf8 r7:edc2f000
>>> r6:eeb3e680 r5:bf0ab088
>>> [    7.549695]  r4:eeb3e680
>>> [    7.549723] [<bf0a8174>] (imx_drm_atomic_commit_tail [imxdrm]) from
>>> [<c04feb1c>] (commit_tail+0x48/0x8c)
>>> [    7.549732]  r10:edf56e00 r9:edc2f3e0 r8:edfafdf8 r7:edc2f000
>>> r6:00000000 r5:bf0ab088
>>> [    7.549737]  r4:eeb3e680 r3:bf0a8174
>>> [    7.549762] [<c04fead4>] (commit_tail) from [<c04fecb8>]
>>> (drm_atomic_helper_commit+0x140/0x148)
>>> [    7.549780]  r5:00000000 r4:eeb3e680
>>> [    7.549820] [<c04feb78>] (drm_atomic_helper_commit) from
>>> [<c051c138>] (drm_atomic_commit+0x54/0x60)
>>> [    7.549843]  r7:eeb3e680 r6:edc2f000 r5:eeb3e680 r4:00000000
>>> [    7.549865] [<c051c0e4>] (drm_atomic_commit) from [<c0501698>]
>>> (restore_fbdev_mode_atomic+0x19c/0x1f8)
>>> [    7.549874]  r7:eeb3e680 r6:00000001 r5:0000003f r4:000000a0
>>> [    7.549886] [<c05014fc>] (restore_fbdev_mode_atomic) from
>>> [<c0501724>] (restore_fbdev_mode+0x30/0x168)
>>> [    7.549895]  r10:edf57800 r9:c17e5a70 r8:00000000 r7:edf56e00
>>> r6:c17e5bc8 r5:edf56ed0
>>> [    7.549899]  r4:edf56e00
>>> [    7.549914] [<c05016f4>] (restore_fbdev_mode) from [<c0504740>]
>>> (drm_fb_helper_restore_fbdev_mode_unlocked.part.8+0x28/0x7c)
>>> [    7.549925]  r10:edf57800 r9:c17e5a70 r8:00000000 r7:c1022ed8
>>> r6:c17e5bc8 r5:edf56ed0
>>> [    7.549931]  r4:edf56e00
>>> [    7.549943] [<c0504718>]
>>> (drm_fb_helper_restore_fbdev_mode_unlocked.part.8) from [<c0504834>]
>>> (drm_fb_helper_set_par+0x5c/0x8c)
>>> [    7.549950]  r7:c1022ed8 r6:c17e5bc8 r5:edfe3400 r4:00000000
>>> [    7.549972] [<c05047d8>] (drm_fb_helper_set_par) from [<c0496768>]
>>> (fbcon_init+0x564/0x5b0)
>>> [    7.549977]  r5:edfe3400 r4:ee808c00
>>> [    7.549992] [<c0496204>] (fbcon_init) from [<c04daae8>]
>>> (visual_init+0xcc/0x114)
>>> [    7.550001]  r10:00000001 r9:ee808c00 r8:c17ebfb4 r7:00000000
>>> r6:ee808e08 r5:00000000
>>> [    7.550005]  r4:ee808c00
>>> [    7.550016] [<c04daa1c>] (visual_init) from [<c04dc12c>]
>>> (do_bind_con_driver+0x1b4/0x394)
>>> [    7.550023]  r7:00000000 r6:00000000 r5:c17ebea0 r4:c0b3e0dc
>>> [    7.550033] [<c04dbf78>] (do_bind_con_driver) from [<c04dc700>]
>>> (do_take_over_console+0x15c/0x1c4)
>>> [    7.550041]  r10:00000001 r9:0000003e r8:00000000 r7:c17ebeb0
>>> r6:00000000 r5:00000000
>>> [    7.550045]  r4:00000000
>>> [    7.550057] [<c04dc5a4>] (do_take_over_console) from [<c0496830>]
>>> (do_fbcon_takeover+0x7c/0xd4)
>>> [    7.550065]  r10:edfe3694 r9:edfe3400 r8:00000000 r7:00000000
>>> r6:00000005 r5:c17e5a70
>>> [    7.550069]  r4:c1022ed8
>>> [    7.550080] [<c04967b4>] (do_fbcon_takeover) from [<c049a2d0>]
>>> (fbcon_event_notify+0x8c8/0x908)
>>> [    7.550086]  r5:c1022ed8 r4:c17e5a70
>>> [    7.550105] [<c0499a08>] (fbcon_event_notify) from [<c0147b5c>]
>>> (notifier_call_chain+0x4c/0x8c)
>>> [    7.550114]  r10:edfe3694 r9:edfe340c r8:00000000 r7:00000000
>>> r6:00000005 r5:edd15ab0
>>> [    7.550118]  r4:ffffffff
>>> [    7.550129] [<c0147b10>] (notifier_call_chain) from [<c0147fec>]
>>> (__blocking_notifier_call_chain+0x50/0x68)
>>> [    7.550138]  r9:edfe340c r8:c17e5a38 r7:ffffffff r6:edd15ab0
>>> r5:c1022cfc r4:00000005
>>> [    7.550150] [<c0147f9c>] (__blocking_notifier_call_chain) from
>>> [<c0148024>] (blocking_notifier_call_chain+0x20/0x28)
>>> [    7.550156]  r7:00000000 r6:c1007f10 r5:edfe3400 r4:c1007f10
>>> [    7.550178] [<c0148004>] (blocking_notifier_call_chain) from
>>> [<c048b8fc>] (fb_notifier_call_chain+0x20/0x24)
>>> [    7.550188] [<c048b8dc>] (fb_notifier_call_chain) from [<c048d8a0>]
>>> (register_framebuffer+0x1f8/0x2ac)
>>> [    7.550206] [<c048d6a8>] (register_framebuffer) from [<c05043f4>]
>>> (__drm_fb_helper_initial_config_and_unlock+0x220/0x414)
>>> [    7.550214]  r10:bf0a855c r9:00000000 r8:00000000 r7:c1031728
>>> r6:edc2f000 r5:edfe3400
>>> [    7.550218]  r4:edf56e00
>>> [    7.550230] [<c05041d4>]
>>> (__drm_fb_helper_initial_config_and_unlock) from [<c0504628>]
>>> (drm_fb_helper_initial_config+0x40/0x44)
>>> [    7.550238]  r10:bf0a855c r9:c1031d28 r8:00000010 r7:c0b450e0
>>> r6:edc2f000 r5:00000010
>>> [    7.550242]  r4:edf56e00
>>> [    7.550253] [<c05045e8>] (drm_fb_helper_initial_config) from
>>> [<c0504a9c>] (drm_fbdev_cma_init_with_funcs+0x88/0x100)
>>> [    7.550258]  r5:00000000 r4:edf56e00
>>> [    7.550269] [<c0504a14>] (drm_fbdev_cma_init_with_funcs) from
>>> [<c0504b28>] (drm_fbdev_cma_init+0x14/0x1c)
>>> [    7.550277]  r9:c1031d28 r8:00000000 r7:ed638c90 r6:eea12010
>>> r5:bf0ac000 r4:edc2f000
>>> [    7.550314] [<c0504b14>] (drm_fbdev_cma_init) from [<bf0a83e4>]
>>> (imx_drm_bind+0xf4/0x178 [imxdrm])
>>> [    7.550346] [<bf0a82f0>] (imx_drm_bind [imxdrm]) from [<c0532e7c>]
>>> (try_to_bring_up_master+0x25c/0x2dc)
>>> [    7.550355]  r9:c1031d28 r8:ed638450 r7:ed638940 r6:00000008
>>> r5:000000a0 r4:ed4d9580
>>> [    7.550367] [<c0532c20>] (try_to_bring_up_master) from [<c0532fac>]
>>> (component_add+0xb0/0x178)
>>> [    7.550375]  r10:00000000 r9:bf0ac160 r8:00000000 r7:ed638ac0
>>> r6:c1031d20 r5:00000000
>>> [    7.550380]  r4:ed638940
>>> [    7.550412] [<c0532efc>] (component_add) from [<bf0a8f2c>]
>>> (ipu_drm_probe+0x80/0xa4 [imxdrm])
>>> [    7.550439]  r9:bf0ac160 r8:00000000 r7:fffffdfb r6:bf0ac160
>>> r5:eddcfc10 r4:eddcfde0
>>> [    7.550499] [<bf0a8eac>] (ipu_drm_probe [imxdrm]) from [<c053b140>]
>>> (platform_drv_probe+0x58/0xb8)
>>> [    7.550508]  r5:ffffffed r4:eddcfc10
>>> [    7.550522] [<c053b0e8>] (platform_drv_probe) from [<c053926c>]
>>> (driver_probe_device+0x2d0/0x47c)
>>> [    7.550529]  r7:c17ee208 r6:c1075608 r5:c17ee204 r4:eddcfc10
>>> [    7.550542] [<c0538f9c>] (driver_probe_device) from [<c0539524>]
>>> (__driver_attach+0x10c/0x128)
>>> [    7.550551]  r10:bf0ac280 r9:c053b0e8 r8:00000000 r7:c1075530
>>> r6:bf0ac160 r5:eddcfc44
>>> [    7.550555]  r4:eddcfc10
>>> [    7.550564] [<c0539418>] (__driver_attach) from [<c0537160>]
>>> (bus_for_each_dev+0x70/0xa4)
>>> [    7.550572]  r7:c1075530 r6:c0539418 r5:bf0ac160 r4:00000000
>>> [    7.550582] [<c05370f0>] (bus_for_each_dev) from [<c0538a58>]
>>> (driver_attach+0x24/0x28)
>>> [    7.550588]  r6:c1032490 r5:edd76c00 r4:bf0ac160
>>> [    7.550598] [<c0538a34>] (driver_attach) from [<c0538438>]
>>> (bus_add_driver+0x1ac/0x26c)
>>> [    7.550611] [<c053828c>] (bus_add_driver) from [<c0539f80>]
>>> (driver_register+0x80/0xfc)
>>> [    7.550618]  r8:c053b0a4 r7:c053aa50 r6:c1075830 r5:00000001 r4:bf0ac160
>>> [    7.550629] [<c0539f00>] (driver_register) from [<c053b2ac>]
>>> (__platform_register_drivers+0x80/0x164)
>>> [    7.550634]  r5:00000001 r4:bf0ab090
>>> [    7.550664] [<c053b22c>] (__platform_register_drivers) from
>>> [<bf0b0020>] (imx_drm_init+0x20/0x1000 [imxdrm])
>>> [    7.550672]  r10:edd15f40 r9:edeb9070 r8:bf0ac2c8 r7:edeb9980
>>> r6:00000000 r5:bf0b0000
>>> [    7.550676]  r4:ffffe000
>>> [    7.550701] [<bf0b0000>] (imx_drm_init [imxdrm]) from [<c0101ba4>]
>>> (do_one_initcall+0x4c/0x174)
>>> [    7.550717] [<c0101b58>] (do_one_initcall) from [<c01b0880>]
>>> (do_init_module+0x68/0x1fc)
>>> [    7.550725]  r9:edeb9070 r8:bf0ac2c8 r6:bf0ac280 r5:00000001 r4:bf0ac280
>>> [    7.550735] [<c01b0818>] (do_init_module) from [<c01af89c>]
>>> (load_module+0x2064/0x270c)
>>> [    7.550741]  r7:edeb9040 r6:bf0ac280 r5:00000001 r4:00000001
>>> [    7.550750] [<c01ad838>] (load_module) from [<c01b01c4>]
>>> (SyS_finit_module+0xbc/0xf8)
>>> [    7.550759]  r10:00000000 r9:edd14000 r8:c0108da4 r7:0000017b
>>> r6:b6e24d40 r5:0000000f
>>> [    7.550764]  r4:00000000
>>> [    7.550776] [<c01b0108>] (SyS_finit_module) from [<c0108be0>]
>>> (ret_fast_syscall+0x0/0x28)
>>> [    7.550781]  r6:00000000 r5:bebb39f4 r4:7778f500
>>> [    7.550790] ---[ end trace 3e19c988c4369e1b ]---
>>> [    7.590815] imx-spdif sound-spdif: snd-soc-dummy-dai <->
>>> 2004000.spdif mapping ok
>>> [    7.616586] dw_hdmi_setup:1679: dwhdmi-imx 120000.hdmi: Non-CEA
>>> mode used in HDMI
>>> [    7.616616] hdmi_av_composer:1495: dwhdmi-imx 120000.hdmi: final
>>> pixclk = 173106000
>>> [    7.616670] dw_hdmi_phy_power_off:1096: dwhdmi-imx 120000.hdmi: PHY
>>> powered down in 0 iterations
>>> [    7.678961] dw_hdmi_phy_power_on:1133: dwhdmi-imx 120000.hdmi: PHY
>>> PLL locked 1 iterations
>>> [    7.678991] dw_hdmi_phy_power_off:1096: dwhdmi-imx 120000.hdmi: PHY
>>> powered down in 0 iterations
>>> [    7.733710] dw_hdmi_phy_power_on:1133: dwhdmi-imx 120000.hdmi: PHY
>>> PLL locked 1 iterations
>>> [    7.733749] dw_hdmi_setup:1744: dwhdmi-imx 120000.hdmi:
>>> dw_hdmi_setup DVI mode
>>> [    7.734455] ------------[ cut here ]------------
>>> [    7.734483] WARNING: CPU: 2 PID: 219 at
>>> drivers/gpu/drm/drm_vblank.c:303
>>> drm_crtc_accurate_vblank_count+0x80/0x84
>>> [    7.734491] This function requires support for accurate vblank timestamps.
>>> [    7.734495] Modules linked in: snd_soc_imx_sgtl5000
>>> snd_soc_imx_spdif snd_soc_fsl_asoc_card snd_ac97_codec coda
>>> videobuf2_dma_contig imx_vdoa v4l2_mem2mem videobuf2_vmalloc
>>> videobuf2_memops dw_hdmi_imx imxdrm(+) dw_hdmi cec etnaviv imx_ipu_v3
>>> binfmt_misc parport_pc ppdev lp parport
>>> [    7.734575] CPU: 2 PID: 219 Comm: systemd-udevd Tainted: G        W
>>>       4.14.0-rc7-gd65d313-dirty #1
>>> [    7.734580] Hardware name: Freescale i.MX6 Quad/DualLite (Device Tree)
>>> [    7.734584] Backtrace:
>>> [    7.734601] [<c010d558>] (dump_backtrace) from [<c010d838>]
>>> (show_stack+0x18/0x1c)
>>> [    7.734609]  r7:c106eed0 r6:00000000 r5:600f0093 r4:c106eed0
>>> [    7.734627] [<c010d820>] (show_stack) from [<c09ff10c>]
>>> (dump_stack+0xac/0xd8)
>>> [    7.734643] [<c09ff060>] (dump_stack) from [<c0122d78>] (__warn+0xec/0x104)
>>> [    7.734652]  r10:edf56e00 r9:c0527bd8 r8:0000012f r7:00000009
>>> r6:c0d4fc08 r5:00000000
>>> [    7.734657]  r4:edd15520 r3:00000000
>>> [    7.734667] [<c0122c8c>] (__warn) from [<c0122dd0>]
>>> (warn_slowpath_fmt+0x40/0x48)
>>> [    7.734675]  r9:edc2f3e0 r8:00000001 r7:edc2f000 r6:00000000
>>> r5:edc2f000 r4:c0d50064
>>> [    7.734686] [<c0122d94>] (warn_slowpath_fmt) from [<c0527bd8>]
>>> (drm_crtc_accurate_vblank_count+0x80/0x84)
>>> [    7.734691]  r3:00000000 r2:c0d50064
>>> [    7.734695]  r4:edc2f000
>>> [    7.734705] [<c0527b58>] (drm_crtc_accurate_vblank_count) from
>>> [<c052800c>] (drm_crtc_arm_vblank_event+0x30/0x64)
>>> [    7.734711]  r7:edc2f000 r6:00000001 r5:edc2f000 r4:edeb5b00
>>> [    7.734751] [<c0527fdc>] (drm_crtc_arm_vblank_event) from
>>> [<bf0a89bc>] (ipu_crtc_atomic_begin+0x50/0x80 [imxdrm])
>>> [    7.734757]  r5:edeb5700 r4:edc2b018
>>> [    7.734785] [<bf0a896c>] (ipu_crtc_atomic_begin [imxdrm]) from
>>> [<c04fa720>] (drm_atomic_helper_commit_planes+0x8c/0x2a8)
>>> [    7.734791]  r5:edeb5700 r4:00000018
>>> [    7.734811] [<c04fa694>] (drm_atomic_helper_commit_planes) from
>>> [<bf0a81a4>] (imx_drm_atomic_commit_tail+0x30/0x144 [imxdrm])
>>> [    7.734821]  r10:edf56e00 r9:edc2f3e0 r8:edfafdf8 r7:edc2f000
>>> r6:edeb5700 r5:bf0ab088
>>> [    7.734825]  r4:edeb5700
>>> [    7.734848] [<bf0a8174>] (imx_drm_atomic_commit_tail [imxdrm]) from
>>> [<c04feb1c>] (commit_tail+0x48/0x8c)
>>> [    7.734857]  r10:edf56e00 r9:edc2f3e0 r8:edfafdf8 r7:edc2f000
>>> r6:00000000 r5:bf0ab088
>>> [    7.734862]  r4:edeb5700 r3:bf0a8174
>>> [    7.734872] [<c04fead4>] (commit_tail) from [<c04fecb8>]
>>> (drm_atomic_helper_commit+0x140/0x148)
>>> [    7.734878]  r5:00000000 r4:edeb5700
>>> [    7.734895] [<c04feb78>] (drm_atomic_helper_commit) from
>>> [<c051c138>] (drm_atomic_commit+0x54/0x60)
>>> [    7.734902]  r7:edeb5700 r6:edc2f000 r5:edeb5700 r4:00000000
>>> [    7.734916] [<c051c0e4>] (drm_atomic_commit) from [<c0501698>]
>>> (restore_fbdev_mode_atomic+0x19c/0x1f8)
>>> [    7.734922]  r7:edeb5700 r6:00000001 r5:0000003f r4:000000a0
>>> [    7.734933] [<c05014fc>] (restore_fbdev_mode_atomic) from
>>> [<c05019a4>] (drm_fb_helper_pan_display+0xb0/0x1bc)
>>> [    7.734942]  r10:00000000 r9:c04feb78 r8:edfe3400 r7:edf5781c
>>> r6:00000000 r5:edf56ed0
>>> [    7.734946]  r4:edf56e00
>>> [    7.734966] [<c05018f4>] (drm_fb_helper_pan_display) from
>>> [<c048bc58>] (fb_pan_display+0xd4/0x140)
>>> [    7.734974]  r10:00000000 r9:edf57800 r8:00000438 r7:00000000
>>> r6:00000000 r5:edf5781c
>>> [    7.734979]  r4:edfe3400 r3:00000000
>>> [    7.734993] [<c048bb84>] (fb_pan_display) from [<c049a664>]
>>> (bit_update_start+0x1c/0x38)
>>> [    7.735002]  r10:00000000 r9:edf57800 r8:c17e5bc8 r7:c17e5a70
>>> r6:ee808c00 r5:edfe3400
>>> [    7.735007]  r4:edf57800 r3:c049a648
>>> [    7.735017] [<c049a648>] (bit_update_start) from [<c049934c>]
>>> (fbcon_switch+0x340/0x558)
>>> [    7.735022]  r5:edfe3400 r4:ee808dc8
>>> [    7.735034] [<c049900c>] (fbcon_switch) from [<c04db61c>]
>>> (redraw_screen+0x150/0x248)
>>> [    7.735043]  r10:00000000 r9:00000000 r8:fffffe20 r7:00000001
>>> r6:00000000 r5:00000000
>>> [    7.735047]  r4:ee808c00
>>> [    7.735056] [<c04db4cc>] (redraw_screen) from [<c0496174>]
>>> (fbcon_prepare_logo+0x354/0x3e4)
>>> [    7.735064]  r8:fffffe20 r7:00000043 r6:00000000 r5:00000000 r4:ee808c00
>>> [    7.735076] [<c0495e20>] (fbcon_prepare_logo) from [<c04965d4>]
>>> (fbcon_init+0x3d0/0x5b0)
>>> [    7.735084]  r10:edf57800 r9:c17e5a70 r8:c17e5bc8 r7:c1022ed8
>>> r6:c17e5bc8 r5:edfe3400
>>> [    7.735088]  r4:ee808c00
>>> [    7.735097] [<c0496204>] (fbcon_init) from [<c04daae8>]
>>> (visual_init+0xcc/0x114)
>>> [    7.735105]  r10:00000001 r9:ee808c00 r8:c17ebfb4 r7:00000000
>>> r6:ee808e08 r5:00000000
>>> [    7.735109]  r4:ee808c00
>>> [    7.735118] [<c04daa1c>] (visual_init) from [<c04dc12c>]
>>> (do_bind_con_driver+0x1b4/0x394)
>>> [    7.735125]  r7:00000000 r6:00000000 r5:c17ebea0 r4:c0b3e0dc
>>> [    7.735135] [<c04dbf78>] (do_bind_con_driver) from [<c04dc700>]
>>> (do_take_over_console+0x15c/0x1c4)
>>> [    7.735143]  r10:00000001 r9:0000003e r8:00000000 r7:c17ebeb0
>>> r6:00000000 r5:00000000
>>> [    7.735147]  r4:00000000
>>> [    7.735156] [<c04dc5a4>] (do_take_over_console) from [<c0496830>]
>>> (do_fbcon_takeover+0x7c/0xd4)
>>> [    7.735164]  r10:edfe3694 r9:edfe3400 r8:00000000 r7:00000000
>>> r6:00000005 r5:c17e5a70
>>> [    7.735168]  r4:c1022ed8
>>> [    7.735178] [<c04967b4>] (do_fbcon_takeover) from [<c049a2d0>]
>>> (fbcon_event_notify+0x8c8/0x908)
>>> [    7.735183]  r5:c1022ed8 r4:c17e5a70
>>> [    7.735200] [<c0499a08>] (fbcon_event_notify) from [<c0147b5c>]
>>> (notifier_call_chain+0x4c/0x8c)
>>> [    7.735208]  r10:edfe3694 r9:edfe340c r8:00000000 r7:00000000
>>> r6:00000005 r5:edd15ab0
>>> [    7.735212]  r4:ffffffff
>>> [    7.735223] [<c0147b10>] (notifier_call_chain) from [<c0147fec>]
>>> (__blocking_notifier_call_chain+0x50/0x68)
>>> [    7.735232]  r9:edfe340c r8:c17e5a38 r7:ffffffff r6:edd15ab0
>>> r5:c1022cfc r4:00000005
>>> [    7.735242] [<c0147f9c>] (__blocking_notifier_call_chain) from
>>> [<c0148024>] (blocking_notifier_call_chain+0x20/0x28)
>>> [    7.735248]  r7:00000000 r6:c1007f10 r5:edfe3400 r4:c1007f10
>>> [    7.735260] [<c0148004>] (blocking_notifier_call_chain) from
>>> [<c048b8fc>] (fb_notifier_call_chain+0x20/0x24)
>>> [    7.735272] [<c048b8dc>] (fb_notifier_call_chain) from [<c048d8a0>]
>>> (register_framebuffer+0x1f8/0x2ac)
>>> [    7.735289] [<c048d6a8>] (register_framebuffer) from [<c05043f4>]
>>> (__drm_fb_helper_initial_config_and_unlock+0x220/0x414)
>>> [    7.735297]  r10:bf0a855c r9:00000000 r8:00000000 r7:c1031728
>>> r6:edc2f000 r5:edfe3400
>>> [    7.735301]  r4:edf56e00
>>> [    7.735315] [<c05041d4>]
>>> (__drm_fb_helper_initial_config_and_unlock) from [<c0504628>]
>>> (drm_fb_helper_initial_config+0x40/0x44)
>>> [    7.735323]  r10:bf0a855c r9:c1031d28 r8:00000010 r7:c0b450e0
>>> r6:edc2f000 r5:00000010
>>> [    7.735327]  r4:edf56e00
>>> [    7.735339] [<c05045e8>] (drm_fb_helper_initial_config) from
>>> [<c0504a9c>] (drm_fbdev_cma_init_with_funcs+0x88/0x100)
>>> [    7.735345]  r5:00000000 r4:edf56e00
>>> [    7.735356] [<c0504a14>] (drm_fbdev_cma_init_with_funcs) from
>>> [<c0504b28>] (drm_fbdev_cma_init+0x14/0x1c)
>>> [    7.735364]  r9:c1031d28 r8:00000000 r7:ed638c90 r6:eea12010
>>> r5:bf0ac000 r4:edc2f000
>>> [    7.735394] [<c0504b14>] (drm_fbdev_cma_init) from [<bf0a83e4>]
>>> (imx_drm_bind+0xf4/0x178 [imxdrm])
>>> [    7.735422] [<bf0a82f0>] (imx_drm_bind [imxdrm]) from [<c0532e7c>]
>>> (try_to_bring_up_master+0x25c/0x2dc)
>>> [    7.735431]  r9:c1031d28 r8:ed638450 r7:ed638940 r6:00000008
>>> r5:000000a0 r4:ed4d9580
>>> [    7.735441] [<c0532c20>] (try_to_bring_up_master) from [<c0532fac>]
>>> (component_add+0xb0/0x178)
>>> [    7.735449]  r10:00000000 r9:bf0ac160 r8:00000000 r7:ed638ac0
>>> r6:c1031d20 r5:00000000
>>> [    7.735453]  r4:ed638940
>>> [    7.735473] [<c0532efc>] (component_add) from [<bf0a8f2c>]
>>> (ipu_drm_probe+0x80/0xa4 [imxdrm])
>>> [    7.735482]  r9:bf0ac160 r8:00000000 r7:fffffdfb r6:bf0ac160
>>> r5:eddcfc10 r4:eddcfde0
>>> [    7.735510] [<bf0a8eac>] (ipu_drm_probe [imxdrm]) from [<c053b140>]
>>> (platform_drv_probe+0x58/0xb8)
>>> [    7.735516]  r5:ffffffed r4:eddcfc10
>>> [    7.735530] [<c053b0e8>] (platform_drv_probe) from [<c053926c>]
>>> (driver_probe_device+0x2d0/0x47c)
>>> [    7.735537]  r7:c17ee208 r6:c1075608 r5:c17ee204 r4:eddcfc10
>>> [    7.735548] [<c0538f9c>] (driver_probe_device) from [<c0539524>]
>>> (__driver_attach+0x10c/0x128)
>>> [    7.735556]  r10:bf0ac280 r9:c053b0e8 r8:00000000 r7:c1075530
>>> r6:bf0ac160 r5:eddcfc44
>>> [    7.735560]  r4:eddcfc10
>>> [    7.735570] [<c0539418>] (__driver_attach) from [<c0537160>]
>>> (bus_for_each_dev+0x70/0xa4)
>>> [    7.735577]  r7:c1075530 r6:c0539418 r5:bf0ac160 r4:00000000
>>> [    7.735586] [<c05370f0>] (bus_for_each_dev) from [<c0538a58>]
>>> (driver_attach+0x24/0x28)
>>> [    7.735594]  r6:c1032490 r5:edd76c00 r4:bf0ac160
>>> [    7.735604] [<c0538a34>] (driver_attach) from [<c0538438>]
>>> (bus_add_driver+0x1ac/0x26c)
>>> [    7.735614] [<c053828c>] (bus_add_driver) from [<c0539f80>]
>>> (driver_register+0x80/0xfc)
>>> [    7.735621]  r8:c053b0a4 r7:c053aa50 r6:c1075830 r5:00000001 r4:bf0ac160
>>> [    7.735632] [<c0539f00>] (driver_register) from [<c053b2ac>]
>>> (__platform_register_drivers+0x80/0x164)
>>> [    7.735637]  r5:00000001 r4:bf0ab090
>>> [    7.735663] [<c053b22c>] (__platform_register_drivers) from
>>> [<bf0b0020>] (imx_drm_init+0x20/0x1000 [imxdrm])
>>> [    7.735671]  r10:edd15f40 r9:edeb9070 r8:bf0ac2c8 r7:edeb9980
>>> r6:00000000 r5:bf0b0000
>>> [    7.735675]  r4:ffffe000
>>> [    7.735698] [<bf0b0000>] (imx_drm_init [imxdrm]) from [<c0101ba4>]
>>> (do_one_initcall+0x4c/0x174)
>>> [    7.735715] [<c0101b58>] (do_one_initcall) from [<c01b0880>]
>>> (do_init_module+0x68/0x1fc)
>>> [    7.735723]  r9:edeb9070 r8:bf0ac2c8 r6:bf0ac280 r5:00000001 r4:bf0ac280
>>> [    7.735732] [<c01b0818>] (do_init_module) from [<c01af89c>]
>>> (load_module+0x2064/0x270c)
>>> [    7.735739]  r7:edeb9040 r6:bf0ac280 r5:00000001 r4:00000001
>>> [    7.735748] [<c01ad838>] (load_module) from [<c01b01c4>]
>>> (SyS_finit_module+0xbc/0xf8)
>>> [    7.735757]  r10:00000000 r9:edd14000 r8:c0108da4 r7:0000017b
>>> r6:b6e24d40 r5:0000000f
>>> [    7.735761]  r4:00000000
>>> [    7.735776] [<c01b0108>] (SyS_finit_module) from [<c0108be0>]
>>> (ret_fast_syscall+0x0/0x28)
>>> [    7.735782]  r6:00000000 r5:bebb39f4 r4:7778f500
>>> [    7.735788] ---[ end trace 3e19c988c4369e1c ]---
>>> [    7.748484] Console: switching to colour frame buffer device 240x67
>>> [    7.799927] ------------[ cut here ]------------
>>> [    7.799956] WARNING: CPU: 2 PID: 219 at
>>> drivers/gpu/drm/drm_vblank.c:303
>>> drm_crtc_accurate_vblank_count+0x80/0x84
>>> [    7.799962] This function requires support for accurate vblank timestamps.
>>> [    7.799966] Modules linked in: snd_soc_imx_sgtl5000
>>> snd_soc_imx_spdif snd_soc_fsl_asoc_card snd_ac97_codec coda
>>> videobuf2_dma_contig imx_vdoa v4l2_mem2mem videobuf2_vmalloc
>>> videobuf2_memops dw_hdmi_imx imxdrm(+) dw_hdmi cec etnaviv imx_ipu_v3
>>> binfmt_misc parport_pc ppdev lp parport
>>> [    7.800052] CPU: 2 PID: 219 Comm: systemd-udevd Tainted: G        W
>>>       4.14.0-rc7-gd65d313-dirty #1
>>> [    7.800057] Hardware name: Freescale i.MX6 Quad/DualLite (Device Tree)
>>> [    7.800061] Backtrace:
>>> [    7.800081] [<c010d558>] (dump_backtrace) from [<c010d838>]
>>> (show_stack+0x18/0x1c)
>>> [    7.800090]  r7:c106eed0 r6:00000000 r5:600f0093 r4:c106eed0
>>> [    7.800115] [<c010d820>] (show_stack) from [<c09ff10c>]
>>> (dump_stack+0xac/0xd8)
>>> [    7.800134] [<c09ff060>] (dump_stack) from [<c0122d78>] (__warn+0xec/0x104)
>>> [    7.800143]  r10:edf56e00 r9:c0527bd8 r8:0000012f r7:00000009
>>> r6:c0d4fc08 r5:00000000
>>> [    7.800148]  r4:edd155f0 r3:00000000
>>> [    7.800158] [<c0122c8c>] (__warn) from [<c0122dd0>]
>>> (warn_slowpath_fmt+0x40/0x48)
>>> [    7.800166]  r9:edc2f3e0 r8:00000001 r7:edc2f000 r6:00000000
>>> r5:edc2f000 r4:c0d50064
>>> [    7.800177] [<c0122d94>] (warn_slowpath_fmt) from [<c0527bd8>]
>>> (drm_crtc_accurate_vblank_count+0x80/0x84)
>>> [    7.800182]  r3:00000000 r2:c0d50064
>>> [    7.800186]  r4:edc2f000
>>> [    7.800196] [<c0527b58>] (drm_crtc_accurate_vblank_count) from
>>> [<c052800c>] (drm_crtc_arm_vblank_event+0x30/0x64)
>>> [    7.800203]  r7:edc2f000 r6:00000001 r5:edc2f000 r4:edd94900
>>> [    7.800249] [<c0527fdc>] (drm_crtc_arm_vblank_event) from
>>> [<bf0a89bc>] (ipu_crtc_atomic_begin+0x50/0x80 [imxdrm])
>>> [    7.800257]  r5:edeb6480 r4:edc2b018
>>> [    7.800304] [<bf0a896c>] (ipu_crtc_atomic_begin [imxdrm]) from
>>> [<c04fa720>] (drm_atomic_helper_commit_planes+0x8c/0x2a8)
>>> [    7.800323]  r5:edeb6480 r4:00000018
>>> [    7.800360] [<c04fa694>] (drm_atomic_helper_commit_planes) from
>>> [<bf0a81a4>] (imx_drm_atomic_commit_tail+0x30/0x144 [imxdrm])
>>> [    7.800374]  r10:edf56e00 r9:edc2f3e0 r8:edfafdf8 r7:edc2f000
>>> r6:edeb6480 r5:bf0ab088
>>> [    7.800386]  r4:edeb6480
>>> [    7.800424] [<bf0a8174>] (imx_drm_atomic_commit_tail [imxdrm]) from
>>> [<c04feb1c>] (commit_tail+0x48/0x8c)
>>> [    7.800446]  r10:edf56e00 r9:edc2f3e0 r8:edfafdf8 r7:edc2f000
>>> r6:00000000 r5:bf0ab088
>>> [    7.800459]  r4:edeb6480 r3:bf0a8174
>>> [    7.800471] [<c04fead4>] (commit_tail) from [<c04fecb8>]
>>> (drm_atomic_helper_commit+0x140/0x148)
>>> [    7.800477]  r5:00000000 r4:edeb6480
>>> [    7.800497] [<c04feb78>] (drm_atomic_helper_commit) from
>>> [<c051c138>] (drm_atomic_commit+0x54/0x60)
>>> [    7.800513]  r7:edeb6480 r6:edc2f000 r5:edeb6480 r4:00000000
>>> [    7.800541] [<c051c0e4>] (drm_atomic_commit) from [<c0501698>]
>>> (restore_fbdev_mode_atomic+0x19c/0x1f8)
>>> [    7.800559]  r7:edeb6480 r6:00000001 r5:0000003f r4:000000a0
>>> [    7.800579] [<c05014fc>] (restore_fbdev_mode_atomic) from
>>> [<c05019a4>] (drm_fb_helper_pan_display+0xb0/0x1bc)
>>> [    7.800601]  r10:00000000 r9:c04feb78 r8:edfe3400 r7:edf5781c
>>> r6:00000000 r5:edf56ed0
>>> [    7.800617]  r4:edf56e00
>>> [    7.800661] [<c05018f4>] (drm_fb_helper_pan_display) from
>>> [<c048bc58>] (fb_pan_display+0xd4/0x140)
>>> [    7.800688]  r10:00000000 r9:edf57800 r8:00000438 r7:00000000
>>> r6:00000000 r5:edf5781c
>>> [    7.800700]  r4:edfe3400 r3:00000000
>>> [    7.800727] [<c048bb84>] (fb_pan_display) from [<c049a664>]
>>> (bit_update_start+0x1c/0x38)
>>> [    7.800746]  r10:00000000 r9:edf57800 r8:c17e5bc8 r7:c17e5a70
>>> r6:ee808c00 r5:edfe3400
>>> [    7.800763]  r4:edf57800 r3:c049a648
>>> [    7.800793] [<c049a648>] (bit_update_start) from [<c049934c>]
>>> (fbcon_switch+0x340/0x558)
>>> [    7.800810]  r5:edfe3400 r4:ee808dc8
>>> [    7.800836] [<c049900c>] (fbcon_switch) from [<c04db61c>]
>>> (redraw_screen+0x150/0x248)
>>> [    7.800846]  r10:c17ebe94 r9:00000000 r8:c0d3ede8 r7:00000001
>>> r6:00000000 r5:00000000
>>> [    7.800857]  r4:ee808c00
>>> [    7.800883] [<c04db4cc>] (redraw_screen) from [<c04dc234>]
>>> (do_bind_con_driver+0x2bc/0x394)
>>> [    7.800902]  r8:c0d3ede8 r7:00000001 r6:00000000 r5:c17ebe94 r4:00000000
>>> [    7.800926] [<c04dbf78>] (do_bind_con_driver) from [<c04dc700>]
>>> (do_take_over_console+0x15c/0x1c4)
>>> [    7.800949]  r10:00000001 r9:0000003e r8:00000000 r7:c17ebeb0
>>> r6:00000000 r5:00000000
>>> [    7.800957]  r4:00000000
>>> [    7.800969] [<c04dc5a4>] (do_take_over_console) from [<c0496830>]
>>> (do_fbcon_takeover+0x7c/0xd4)
>>> [    7.800979]  r10:edfe3694 r9:edfe3400 r8:00000000 r7:00000000
>>> r6:00000005 r5:c17e5a70
>>> [    7.800983]  r4:c1022ed8
>>> [    7.800994] [<c04967b4>] (do_fbcon_takeover) from [<c049a2d0>]
>>> (fbcon_event_notify+0x8c8/0x908)
>>> [    7.801000]  r5:c1022ed8 r4:c17e5a70
>>> [    7.801028] [<c0499a08>] (fbcon_event_notify) from [<c0147b5c>]
>>> (notifier_call_chain+0x4c/0x8c)
>>> [    7.801049]  r10:edfe3694 r9:edfe340c r8:00000000 r7:00000000
>>> r6:00000005 r5:edd15ab0
>>> [    7.801060]  r4:ffffffff
>>> [    7.801090] [<c0147b10>] (notifier_call_chain) from [<c0147fec>]
>>> (__blocking_notifier_call_chain+0x50/0x68)
>>> [    7.801110]  r9:edfe340c r8:c17e5a38 r7:ffffffff r6:edd15ab0
>>> r5:c1022cfc r4:00000005
>>> [    7.801123] [<c0147f9c>] (__blocking_notifier_call_chain) from
>>> [<c0148024>] (blocking_notifier_call_chain+0x20/0x28)
>>> [    7.801130]  r7:00000000 r6:c1007f10 r5:edfe3400 r4:c1007f10
>>> [    7.801143] [<c0148004>] (blocking_notifier_call_chain) from
>>> [<c048b8fc>] (fb_notifier_call_chain+0x20/0x24)
>>> [    7.801155] [<c048b8dc>] (fb_notifier_call_chain) from [<c048d8a0>]
>>> (register_framebuffer+0x1f8/0x2ac)
>>> [    7.801173] [<c048d6a8>] (register_framebuffer) from [<c05043f4>]
>>> (__drm_fb_helper_initial_config_and_unlock+0x220/0x414)
>>> [    7.801182]  r10:bf0a855c r9:00000000 r8:00000000 r7:c1031728
>>> r6:edc2f000 r5:edfe3400
>>> [    7.801187]  r4:edf56e00
>>> [    7.801200] [<c05041d4>]
>>> (__drm_fb_helper_initial_config_and_unlock) from [<c0504628>]
>>> (drm_fb_helper_initial_config+0x40/0x44)
>>> [    7.801209]  r10:bf0a855c r9:c1031d28 r8:00000010 r7:c0b450e0
>>> r6:edc2f000 r5:00000010
>>> [    7.801213]  r4:edf56e00
>>> [    7.801225] [<c05045e8>] (drm_fb_helper_initial_config) from
>>> [<c0504a9c>] (drm_fbdev_cma_init_with_funcs+0x88/0x100)
>>> [    7.801230]  r5:00000000 r4:edf56e00
>>> [    7.801241] [<c0504a14>] (drm_fbdev_cma_init_with_funcs) from
>>> [<c0504b28>] (drm_fbdev_cma_init+0x14/0x1c)
>>> [    7.801249]  r9:c1031d28 r8:00000000 r7:ed638c90 r6:eea12010
>>> r5:bf0ac000 r4:edc2f000
>>> [    7.801283] [<c0504b14>] (drm_fbdev_cma_init) from [<bf0a83e4>]
>>> (imx_drm_bind+0xf4/0x178 [imxdrm])
>>> [    7.801314] [<bf0a82f0>] (imx_drm_bind [imxdrm]) from [<c0532e7c>]
>>> (try_to_bring_up_master+0x25c/0x2dc)
>>> [    7.801323]  r9:c1031d28 r8:ed638450 r7:ed638940 r6:00000008
>>> r5:000000a0 r4:ed4d9580
>>> [    7.801333] [<c0532c20>] (try_to_bring_up_master) from [<c0532fac>]
>>> (component_add+0xb0/0x178)
>>> [    7.801341]  r10:00000000 r9:bf0ac160 r8:00000000 r7:ed638ac0
>>> r6:c1031d20 r5:00000000
>>> [    7.801345]  r4:ed638940
>>> [    7.801366] [<c0532efc>] (component_add) from [<bf0a8f2c>]
>>> (ipu_drm_probe+0x80/0xa4 [imxdrm])
>>> [    7.801374]  r9:bf0ac160 r8:00000000 r7:fffffdfb r6:bf0ac160
>>> r5:eddcfc10 r4:eddcfde0
>>> [    7.801400] [<bf0a8eac>] (ipu_drm_probe [imxdrm]) from [<c053b140>]
>>> (platform_drv_probe+0x58/0xb8)
>>> [    7.801406]  r5:ffffffed r4:eddcfc10
>>> [    7.801417] [<c053b0e8>] (platform_drv_probe) from [<c053926c>]
>>> (driver_probe_device+0x2d0/0x47c)
>>> [    7.801424]  r7:c17ee208 r6:c1075608 r5:c17ee204 r4:eddcfc10
>>> [    7.801443] [<c0538f9c>] (driver_probe_device) from [<c0539524>]
>>> (__driver_attach+0x10c/0x128)
>>> [    7.801455]  r10:bf0ac280 r9:c053b0e8 r8:00000000 r7:c1075530
>>> r6:bf0ac160 r5:eddcfc44
>>> [    7.801460]  r4:eddcfc10
>>> [    7.801480] [<c0539418>] (__driver_attach) from [<c0537160>]
>>> (bus_for_each_dev+0x70/0xa4)
>>> [    7.801496]  r7:c1075530 r6:c0539418 r5:bf0ac160 r4:00000000
>>> [    7.801522] [<c05370f0>] (bus_for_each_dev) from [<c0538a58>]
>>> (driver_attach+0x24/0x28)
>>> [    7.801536]  r6:c1032490 r5:edd76c00 r4:bf0ac160
>>> [    7.801548] [<c0538a34>] (driver_attach) from [<c0538438>]
>>> (bus_add_driver+0x1ac/0x26c)
>>> [    7.801566] [<c053828c>] (bus_add_driver) from [<c0539f80>]
>>> (driver_register+0x80/0xfc)
>>> [    7.801585]  r8:c053b0a4 r7:c053aa50 r6:c1075830 r5:00000001 r4:bf0ac160
>>> [    7.801611] [<c0539f00>] (driver_register) from [<c053b2ac>]
>>> (__platform_register_drivers+0x80/0x164)
>>> [    7.801626]  r5:00000001 r4:bf0ab090
>>> [    7.801665] [<c053b22c>] (__platform_register_drivers) from
>>> [<bf0b0020>] (imx_drm_init+0x20/0x1000 [imxdrm])
>>> [    7.801678]  r10:edd15f40 r9:edeb9070 r8:bf0ac2c8 r7:edeb9980
>>> r6:00000000 r5:bf0b0000
>>> [    7.801682]  r4:ffffe000
>>> [    7.801721] [<bf0b0000>] (imx_drm_init [imxdrm]) from [<c0101ba4>]
>>> (do_one_initcall+0x4c/0x174)
>>> [    7.801759] [<c0101b58>] (do_one_initcall) from [<c01b0880>]
>>> (do_init_module+0x68/0x1fc)
>>> [    7.801787]  r9:edeb9070 r8:bf0ac2c8 r6:bf0ac280 r5:00000001 r4:bf0ac280
>>> [    7.801815] [<c01b0818>] (do_init_module) from [<c01af89c>]
>>> (load_module+0x2064/0x270c)
>>> [    7.801835]  r7:edeb9040 r6:bf0ac280 r5:00000001 r4:00000001
>>> [    7.801859] [<c01ad838>] (load_module) from [<c01b01c4>]
>>> (SyS_finit_module+0xbc/0xf8)
>>> [    7.801882]  r10:00000000 r9:edd14000 r8:c0108da4 r7:0000017b
>>> r6:b6e24d40 r5:0000000f
>>> [    7.801896]  r4:00000000
>>> [    7.801927] [<c01b0108>] (SyS_finit_module) from [<c0108be0>]
>>> (ret_fast_syscall+0x0/0x28)
>>> [    7.801940]  r6:00000000 r5:bebb39f4 r4:7778f500
>>> [    7.801947] ---[ end trace 3e19c988c4369e1d ]---
>>> [    7.885327] imx-drm display-subsystem: fb0:  frame buffer device
>>> [    7.937166] [drm] Initialized imx-drm 1.0.0 20120507 for
>>> display-subsystem on minor 1
>>> [    8.694540] ------------[ cut here ]------------
>>> [    8.694576] WARNING: CPU: 0 PID: 464 at
>>> drivers/gpu/drm/drm_vblank.c:303
>>> drm_crtc_accurate_vblank_count+0x80/0x84
>>> [    8.694583] This function requires support for accurate vblank timestamps.
>>> [    8.694587] Modules linked in: dw_hdmi_cec dw_hdmi_ahb_audio
>>> snd_soc_imx_sgtl5000 snd_soc_imx_spdif snd_soc_fsl_asoc_card
>>> snd_ac97_codec coda videobuf2_dma_contig imx_vdoa v4l2_mem2mem
>>> videobuf2_vmalloc videobuf2_memops dw_hdmi_imx imxdrm dw_hdmi cec
>>> etnaviv imx_ipu_v3 binfmt_misc parport_pc ppdev lp parport
>>> [    8.694682] CPU: 0 PID: 464 Comm: setfont Tainted: G        W
>>> 4.14.0-rc7-gd65d313-dirty #1
>>> [    8.694687] Hardware name: Freescale i.MX6 Quad/DualLite (Device Tree)
>>> [    8.694692] Backtrace:
>>> [    8.694713] [<c010d558>] (dump_backtrace) from [<c010d838>]
>>> (show_stack+0x18/0x1c)
>>> [    8.694722]  r7:c106eed0 r6:00000000 r5:60080093 r4:c106eed0
>>> [    8.694747] [<c010d820>] (show_stack) from [<c09ff10c>]
>>> (dump_stack+0xac/0xd8)
>>> [    8.694766] [<c09ff060>] (dump_stack) from [<c0122d78>] (__warn+0xec/0x104)
>>> [    8.694777]  r10:edf56e00 r9:c0527bd8 r8:0000012f r7:00000009
>>> r6:c0d4fc08 r5:00000000
>>> [    8.694783]  r4:ed5ab9f0 r3:00000000
>>> [    8.694797] [<c0122c8c>] (__warn) from [<c0122dd0>]
>>> (warn_slowpath_fmt+0x40/0x48)
>>> [    8.694809]  r9:edc2f3e0 r8:00000001 r7:edc2f000 r6:00000000
>>> r5:edc2f000 r4:c0d50064
>>> [    8.694824] [<c0122d94>] (warn_slowpath_fmt) from [<c0527bd8>]
>>> (drm_crtc_accurate_vblank_count+0x80/0x84)
>>> [    8.694831]  r3:00000000 r2:c0d50064
>>> [    8.694835]  r4:edc2f000
>>> [    8.694847] [<c0527b58>] (drm_crtc_accurate_vblank_count) from
>>> [<c052800c>] (drm_crtc_arm_vblank_event+0x30/0x64)
>>> [    8.694856]  r7:edc2f000 r6:00000001 r5:edc2f000 r4:edd94880
>>> [    8.694906] [<c0527fdc>] (drm_crtc_arm_vblank_event) from
>>> [<bf0a89bc>] (ipu_crtc_atomic_begin+0x50/0x80 [imxdrm])
>>> [    8.694916]  r5:edd94300 r4:edc2b018
>>> [    8.694946] [<bf0a896c>] (ipu_crtc_atomic_begin [imxdrm]) from
>>> [<c04fa720>] (drm_atomic_helper_commit_planes+0x8c/0x2a8)
>>> [    8.694951]  r5:edd94300 r4:00000018
>>> [    8.694969] [<c04fa694>] (drm_atomic_helper_commit_planes) from
>>> [<bf0a81a4>] (imx_drm_atomic_commit_tail+0x30/0x144 [imxdrm])
>>> [    8.694980]  r10:edf56e00 r9:edc2f3e0 r8:edfafdf8 r7:edc2f000
>>> r6:edd94300 r5:bf0ab088
>>> [    8.694984]  r4:edd94300
>>> [    8.695007] [<bf0a8174>] (imx_drm_atomic_commit_tail [imxdrm]) from
>>> [<c04feb1c>] (commit_tail+0x48/0x8c)
>>> [    8.695016]  r10:edf56e00 r9:edc2f3e0 r8:edfafdf8 r7:edc2f000
>>> r6:00000000 r5:bf0ab088
>>> [    8.695021]  r4:edd94300 r3:bf0a8174
>>> [    8.695031] [<c04fead4>] (commit_tail) from [<c04fecb8>]
>>> (drm_atomic_helper_commit+0x140/0x148)
>>> [    8.695037]  r5:00000000 r4:edd94300
>>> [    8.695054] [<c04feb78>] (drm_atomic_helper_commit) from
>>> [<c051c138>] (drm_atomic_commit+0x54/0x60)
>>> [    8.695060]  r7:edd94300 r6:edc2f000 r5:edd94300 r4:00000000
>>> [    8.695075] [<c051c0e4>] (drm_atomic_commit) from [<c0501698>]
>>> (restore_fbdev_mode_atomic+0x19c/0x1f8)
>>> [    8.695082]  r7:edd94300 r6:00000001 r5:0000003f r4:000000a0
>>> [    8.695093] [<c05014fc>] (restore_fbdev_mode_atomic) from
>>> [<c05019a4>] (drm_fb_helper_pan_display+0xb0/0x1bc)
>>> [    8.695101]  r10:00000000 r9:c04feb78 r8:edfe3400 r7:edf5781c
>>> r6:00000000 r5:edf56ed0
>>> [    8.695106]  r4:edf56e00
>>> [    8.695129] [<c05018f4>] (drm_fb_helper_pan_display) from
>>> [<c048bc58>] (fb_pan_display+0xd4/0x140)
>>> [    8.695138]  r10:00000000 r9:edf57800 r8:00000438 r7:00000000
>>> r6:00000000 r5:edf5781c
>>> [    8.695143]  r4:edfe3400 r3:00000000
>>> [    8.695160] [<c048bb84>] (fb_pan_display) from [<c049a664>]
>>> (bit_update_start+0x1c/0x38)
>>> [    8.695168]  r10:00000000 r9:edf57800 r8:c17e5bc8 r7:c17e5a70
>>> r6:ee808c00 r5:edfe3400
>>> [    8.695173]  r4:edf57800 r3:c049a648
>>> [    8.695183] [<c049a648>] (bit_update_start) from [<c049934c>]
>>> (fbcon_switch+0x340/0x558)
>>> [    8.695188]  r5:edfe3400 r4:ee808dc8
>>> [    8.695205] [<c049900c>] (fbcon_switch) from [<c04db61c>]
>>> (redraw_screen+0x150/0x248)
>>> [    8.695213]  r10:00000000 r9:edfe3400 r8:00000008 r7:00000001
>>> r6:c17e5a70 r5:00000000
>>> [    8.695217]  r4:ee808c00
>>> [    8.695230] [<c04db4cc>] (redraw_screen) from [<c0498c50>]
>>> (fbcon_do_set_font+0x1e0/0x27c)
>>> [    8.695238]  r8:00000008 r7:c17e5bc8 r6:c17e5a70 r5:00000000 r4:ee808c00
>>> [    8.695248] [<c0498a70>] (fbcon_do_set_font) from [<c0498ff0>]
>>> (fbcon_set_font+0x208/0x224)
>>> [    8.695256]  r10:00001000 r9:0000003e r8:ed5abdd8 r7:20135b36
>>> r6:c17ec890 r5:0000003f
>>> [    8.695260]  r4:c17e7854
>>> [    8.695272] [<c0498de8>] (fbcon_set_font) from [<c04e0824>]
>>> (con_font_op+0x438/0x4f0)
>>> [    8.695282]  r10:00000000 r9:010719c8 r8:00000000 r7:ee808c00
>>> r6:00000001 r5:ee808c00
>>> [    8.695285]  r4:ed5abe40
>>> [    8.695304] [<c04e03ec>] (con_font_op) from [<c04d3694>]
>>> (vt_ioctl+0x14a0/0x199c)
>>> [    8.695312]  r10:00000000 r9:ee808dc8 r8:00000000 r7:00000051
>>> r6:00000001 r5:ee808c00
>>> [    8.695316]  r4:bee8a33c
>>> [    8.695336] [<c04d21f4>] (vt_ioctl) from [<c04c4c6c>] (tty_ioctl+0x190/0xbcc)
>>> [    8.695345]  r10:00000000 r9:ed5aa000 r8:edfe9c00 r7:bee8a33c
>>> r6:ededf400 r5:edfe9c00
>>> [    8.695349]  r4:00004b72
>>> [    8.695363] [<c04c4adc>] (tty_ioctl) from [<c023eab8>]
>>> (do_vfs_ioctl+0xac/0xa2c)
>>> [    8.695374]  r9:ed5aa000 r8:00000003 r7:c023f474 r6:ededf400
>>> r5:ee90b3a8 r4:bee8a33c
>>> [    8.695382] [<c023ea0c>] (do_vfs_ioctl) from [<c023f474>]
>>> (SyS_ioctl+0x3c/0x64)
>>> [    8.695390]  r10:00000000 r9:ed5aa000 r8:bee8a33c r7:00004b72
>>> r6:ededf400 r5:00000003
>>> [    8.695394]  r4:ededf400
>>> [    8.695411] [<c023f438>] (SyS_ioctl) from [<c0108be0>]
>>> (ret_fast_syscall+0x0/0x28)
>>> [    8.695420]  r9:ed5aa000 r8:c0108da4 r7:00000036 r6:00000010
>>> r5:00000008 r4:00027128
>>> [    8.695425] ---[ end trace 3e19c988c4369e1e ]---
>>> [    8.732040] ------------[ cut here ]------------
>>> [    8.732072] WARNING: CPU: 1 PID: 469 at
>>> drivers/gpu/drm/drm_vblank.c:303
>>> drm_crtc_accurate_vblank_count+0x80/0x84
>>> [    8.732077] This function requires support for accurate vblank timestamps.
>>> [    8.732083] Modules linked in: dw_hdmi_cec dw_hdmi_ahb_audio
>>> snd_soc_imx_sgtl5000 snd_soc_imx_spdif snd_soc_fsl_asoc_card
>>> snd_ac97_codec coda videobuf2_dma_contig imx_vdoa v4l2_mem2mem
>>> videobuf2_vmalloc videobuf2_memops dw_hdmi_imx imxdrm dw_hdmi cec
>>> etnaviv imx_ipu_v3 binfmt_misc parport_pc ppdev lp parport
>>> [    8.732168] CPU: 1 PID: 469 Comm: setfont Tainted: G        W
>>> 4.14.0-rc7-gd65d313-dirty #1
>>> [    8.732175] Hardware name: Freescale i.MX6 Quad/DualLite (Device Tree)
>>> [    8.732179] Backtrace:
>>> [    8.732196] [<c010d558>] (dump_backtrace) from [<c010d838>]
>>> (show_stack+0x18/0x1c)
>>> [    8.732206]  r7:c106eed0 r6:00000000 r5:60080093 r4:c106eed0
>>> [    8.732226] [<c010d820>] (show_stack) from [<c09ff10c>]
>>> (dump_stack+0xac/0xd8)
>>> [    8.732246] [<c09ff060>] (dump_stack) from [<c0122d78>] (__warn+0xec/0x104)
>>> [    8.732255]  r10:edf56e00 r9:c0527bd8 r8:0000012f r7:00000009
>>> r6:c0d4fc08 r5:00000000
>>> [    8.732260]  r4:ed0cd9f0 r3:00000000
>>> [    8.732271] [<c0122c8c>] (__warn) from [<c0122dd0>]
>>> (warn_slowpath_fmt+0x40/0x48)
>>> [    8.732280]  r9:edc2f3e0 r8:00000001 r7:edc2f000 r6:00000000
>>> r5:edc2f000 r4:c0d50064
>>> [    8.732297] [<c0122d94>] (warn_slowpath_fmt) from [<c0527bd8>]
>>> (drm_crtc_accurate_vblank_count+0x80/0x84)
>>> [    8.732302]  r3:00000000 r2:c0d50064
>>> [    8.732306]  r4:edc2f000
>>> [    8.732316] [<c0527b58>] (drm_crtc_accurate_vblank_count) from
>>> [<c052800c>] (drm_crtc_arm_vblank_event+0x30/0x64)
>>> [    8.732323]  r7:edc2f000 r6:00000001 r5:edc2f000 r4:edc80680
>>> [    8.732361] [<c0527fdc>] (drm_crtc_arm_vblank_event) from
>>> [<bf0a89bc>] (ipu_crtc_atomic_begin+0x50/0x80 [imxdrm])
>>> [    8.732367]  r5:ed1cdc00 r4:edc2b018
>>> [    8.732392] [<bf0a896c>] (ipu_crtc_atomic_begin [imxdrm]) from
>>> [<c04fa720>] (drm_atomic_helper_commit_planes+0x8c/0x2a8)
>>> [    8.732397]  r5:ed1cdc00 r4:00000018
>>> [    8.732415] [<c04fa694>] (drm_atomic_helper_commit_planes) from
>>> [<bf0a81a4>] (imx_drm_atomic_commit_tail+0x30/0x144 [imxdrm])
>>> [    8.732426]  r10:edf56e00 r9:edc2f3e0 r8:edfafdf8 r7:edc2f000
>>> r6:ed1cdc00 r5:bf0ab088
>>> [    8.732430]  r4:ed1cdc00
>>> [    8.732454] [<bf0a8174>] (imx_drm_atomic_commit_tail [imxdrm]) from
>>> [<c04feb1c>] (commit_tail+0x48/0x8c)
>>> [    8.732463]  r10:edf56e00 r9:edc2f3e0 r8:edfafdf8 r7:edc2f000
>>> r6:00000000 r5:bf0ab088
>>> [    8.732467]  r4:ed1cdc00 r3:bf0a8174
>>> [    8.732477] [<c04fead4>] (commit_tail) from [<c04fecb8>]
>>> (drm_atomic_helper_commit+0x140/0x148)
>>> [    8.732482]  r5:00000000 r4:ed1cdc00
>>> [    8.732497] [<c04feb78>] (drm_atomic_helper_commit) from
>>> [<c051c138>] (drm_atomic_commit+0x54/0x60)
>>> [    8.732504]  r7:ed1cdc00 r6:edc2f000 r5:ed1cdc00 r4:00000000
>>> [    8.732519] [<c051c0e4>] (drm_atomic_commit) from [<c0501698>]
>>> (restore_fbdev_mode_atomic+0x19c/0x1f8)
>>> [    8.732526]  r7:ed1cdc00 r6:00000001 r5:0000003f r4:000000a0
>>> [    8.732537] [<c05014fc>] (restore_fbdev_mode_atomic) from
>>> [<c05019a4>] (drm_fb_helper_pan_display+0xb0/0x1bc)
>>> [    8.732546]  r10:00000000 r9:c04feb78 r8:edfe3400 r7:edf5781c
>>> r6:00000000 r5:edf56ed0
>>> [    8.732550]  r4:edf56e00
>>> [    8.732568] [<c05018f4>] (drm_fb_helper_pan_display) from
>>> [<c048bc58>] (fb_pan_display+0xd4/0x140)
>>> [    8.732578]  r10:00000000 r9:edf57800 r8:00000438 r7:00000000
>>> r6:00000000 r5:edf5781c
>>> [    8.732583]  r4:edfe3400 r3:00000000
>>> [    8.732600] [<c048bb84>] (fb_pan_display) from [<c049a664>]
>>> (bit_update_start+0x1c/0x38)
>>> [    8.732615]  r10:00000000 r9:edf57800 r8:c17e5bc8 r7:c17e5a70
>>> r6:ee808c00 r5:edfe3400
>>> [    8.732621]  r4:edf57800 r3:c049a648
>>> [    8.732638] [<c049a648>] (bit_update_start) from [<c049934c>]
>>> (fbcon_switch+0x340/0x558)
>>> [    8.732645]  r5:edfe3400 r4:ee808dc8
>>> [    8.732663] [<c049900c>] (fbcon_switch) from [<c04db61c>]
>>> (redraw_screen+0x150/0x248)
>>> [    8.732674]  r10:00000000 r9:edfe3400 r8:00000008 r7:00000001
>>> r6:c17e5a70 r5:00000000
>>> [    8.732678]  r4:ee808c00
>>> [    8.732694] [<c04db4cc>] (redraw_screen) from [<c0498c50>]
>>> (fbcon_do_set_font+0x1e0/0x27c)
>>> [    8.732703]  r8:00000008 r7:c17e5bc8 r6:c17e5a70 r5:ee39c010 r4:ee808c00
>>> [    8.732715] [<c0498a70>] (fbcon_do_set_font) from [<c0498ff0>]
>>> (fbcon_set_font+0x208/0x224)
>>> [    8.732726]  r10:c17e5bc8 r9:0000003e r8:ed0cddd8 r7:20135b36
>>> r6:c17ebfb4 r5:00000000
>>> [    8.732730]  r4:c17e5bc8
>>> [    8.732744] [<c0498de8>] (fbcon_set_font) from [<c04e0824>]
>>> (con_font_op+0x438/0x4f0)
>>> [    8.732755]  r10:00000000 r9:008379c8 r8:00000000 r7:ee808c00
>>> r6:00000001 r5:ee808c00
>>> [    8.732759]  r4:ed0cde40
>>> [    8.732777] [<c04e03ec>] (con_font_op) from [<c04d3694>]
>>> (vt_ioctl+0x14a0/0x199c)
>>> [    8.732788]  r10:00000000 r9:ee808dc8 r8:00000000 r7:00000051
>>> r6:00000001 r5:ee808c00
>>> [    8.732793]  r4:bed9434c
>>> [    8.732810] [<c04d21f4>] (vt_ioctl) from [<c04c4c6c>] (tty_ioctl+0x190/0xbcc)
>>> [    8.732823]  r10:00000000 r9:ed0cc000 r8:edfe9c00 r7:bed9434c
>>> r6:ed0dbcc0 r5:edfe9c00
>>> [    8.732828]  r4:00004b72
>>> [    8.732847] [<c04c4adc>] (tty_ioctl) from [<c023eab8>]
>>> (do_vfs_ioctl+0xac/0xa2c)
>>> [    8.732856]  r9:ed0cc000 r8:00000003 r7:c023f474 r6:ed0dbcc0
>>> r5:ee90b3a8 r4:bed9434c
>>> [    8.732867] [<c023ea0c>] (do_vfs_ioctl) from [<c023f474>]
>>> (SyS_ioctl+0x3c/0x64)
>>> [    8.732877]  r10:00000000 r9:ed0cc000 r8:bed9434c r7:00004b72
>>> r6:ed0dbcc0 r5:00000003
>>> [    8.732882]  r4:ed0dbcc0
>>> [    8.732898] [<c023f438>] (SyS_ioctl) from [<c0108be0>]
>>> (ret_fast_syscall+0x0/0x28)
>>> [    8.732909]  r9:ed0cc000 r8:c0108da4 r7:00000036 r6:00000010
>>> r5:00000008 r4:00027128
>>> [    8.732914] ---[ end trace 3e19c988c4369e1f ]---
>>> [    8.903802] ------------[ cut here ]------------
>>> [    8.903857] WARNING: CPU: 2 PID: 483 at
>>> drivers/gpu/drm/drm_vblank.c:303
>>> drm_crtc_accurate_vblank_count+0x80/0x84
>>> [    8.903867] This function requires support for accurate vblank timestamps.
>>> [    8.903878] Modules linked in: dw_hdmi_cec dw_hdmi_ahb_audio
>>> snd_soc_imx_sgtl5000 snd_soc_imx_spdif snd_soc_fsl_asoc_card
>>> snd_ac97_codec coda videobuf2_dma_contig imx_vdoa v4l2_mem2mem
>>> videobuf2_vmalloc videobuf2_memops dw_hdmi_imx imxdrm dw_hdmi cec
>>> etnaviv imx_ipu_v3 binfmt_misc parport_pc ppdev lp parport
>>> [    8.904099] CPU: 2 PID: 483 Comm: setfont Tainted: G        W
>>> 4.14.0-rc7-gd65d313-dirty #1
>>> [    8.904110] Hardware name: Freescale i.MX6 Quad/DualLite (Device Tree)
>>> [    8.904114] Backtrace:
>>> [    8.904145] [<c010d558>] (dump_backtrace) from [<c010d838>]
>>> (show_stack+0x18/0x1c)
>>> [    8.904165]  r7:c106eed0 r6:00000000 r5:60080093 r4:c106eed0
>>> [    8.904209] [<c010d820>] (show_stack) from [<c09ff10c>]
>>> (dump_stack+0xac/0xd8)
>>> [    8.904238] [<c09ff060>] (dump_stack) from [<c0122d78>] (__warn+0xec/0x104)
>>> [    8.904249]  r10:edf56e00 r9:c0527bd8 r8:0000012f r7:00000009
>>> r6:c0d4fc08 r5:00000000
>>> [    8.904255]  r4:ed0e39f0 r3:00000000
>>> [    8.904266] [<c0122c8c>] (__warn) from [<c0122dd0>]
>>> (warn_slowpath_fmt+0x40/0x48)
>>> [    8.904274]  r9:edc2f3e0 r8:00000001 r7:edc2f000 r6:00000000
>>> r5:edc2f000 r4:c0d50064
>>> [    8.904287] [<c0122d94>] (warn_slowpath_fmt) from [<c0527bd8>]
>>> (drm_crtc_accurate_vblank_count+0x80/0x84)
>>> [    8.904293]  r3:00000000 r2:c0d50064
>>> [    8.904297]  r4:edc2f000
>>> [    8.904307] [<c0527b58>] (drm_crtc_accurate_vblank_count) from
>>> [<c052800c>] (drm_crtc_arm_vblank_event+0x30/0x64)
>>> [    8.904314]  r7:edc2f000 r6:00000001 r5:edc2f000 r4:edef7d00
>>> [    8.904349] [<c0527fdc>] (drm_crtc_arm_vblank_event) from
>>> [<bf0a89bc>] (ipu_crtc_atomic_begin+0x50/0x80 [imxdrm])
>>> [    8.904354]  r5:ed787480 r4:edc2b018
>>> [    8.904389] [<bf0a896c>] (ipu_crtc_atomic_begin [imxdrm]) from
>>> [<c04fa720>] (drm_atomic_helper_commit_planes+0x8c/0x2a8)
>>> [    8.904407]  r5:ed787480 r4:00000018
>>> [    8.904444] [<c04fa694>] (drm_atomic_helper_commit_planes) from
>>> [<bf0a81a4>] (imx_drm_atomic_commit_tail+0x30/0x144 [imxdrm])
>>> [    8.904466]  r10:edf56e00 r9:edc2f3e0 r8:edfafdf8 r7:edc2f000
>>> r6:ed787480 r5:bf0ab088
>>> [    8.904474]  r4:ed787480
>>> [    8.904502] [<bf0a8174>] (imx_drm_atomic_commit_tail [imxdrm]) from
>>> [<c04feb1c>] (commit_tail+0x48/0x8c)
>>> [    8.904511]  r10:edf56e00 r9:edc2f3e0 r8:edfafdf8 r7:edc2f000
>>> r6:00000000 r5:bf0ab088
>>> [    8.904516]  r4:ed787480 r3:bf0a8174
>>> [    8.904529] [<c04fead4>] (commit_tail) from [<c04fecb8>]
>>> (drm_atomic_helper_commit+0x140/0x148)
>>> [    8.904534]  r5:00000000 r4:ed787480
>>> [    8.904552] [<c04feb78>] (drm_atomic_helper_commit) from
>>> [<c051c138>] (drm_atomic_commit+0x54/0x60)
>>> [    8.904561]  r7:ed787480 r6:edc2f000 r5:ed787480 r4:00000000
>>> [    8.904574] [<c051c0e4>] (drm_atomic_commit) from [<c0501698>]
>>> (restore_fbdev_mode_atomic+0x19c/0x1f8)
>>> [    8.904581]  r7:ed787480 r6:00000001 r5:0000003f r4:000000a0
>>> [    8.904594] [<c05014fc>] (restore_fbdev_mode_atomic) from
>>> [<c05019a4>] (drm_fb_helper_pan_display+0xb0/0x1bc)
>>> [    8.904603]  r10:00000000 r9:c04feb78 r8:edfe3400 r7:edf5781c
>>> r6:00000000 r5:edf56ed0
>>> [    8.904607]  r4:edf56e00
>>> [    8.904635] [<c05018f4>] (drm_fb_helper_pan_display) from
>>> [<c048bc58>] (fb_pan_display+0xd4/0x140)
>>> [    8.904643]  r10:00000000 r9:edf57800 r8:00000438 r7:00000000
>>> r6:00000000 r5:edf5781c
>>> [    8.904648]  r4:edfe3400 r3:00000000
>>> [    8.904665] [<c048bb84>] (fb_pan_display) from [<c049a664>]
>>> (bit_update_start+0x1c/0x38)
>>> [    8.904673]  r10:00000000 r9:edf57800 r8:c17e5bc8 r7:c17e5a70
>>> r6:ee808c00 r5:edfe3400
>>> [    8.904678]  r4:edf57800 r3:c049a648
>>> [    8.904690] [<c049a648>] (bit_update_start) from [<c049934c>]
>>> (fbcon_switch+0x340/0x558)
>>> [    8.904695]  r5:edfe3400 r4:ee808dc8
>>> [    8.904713] [<c049900c>] (fbcon_switch) from [<c04db61c>]
>>> (redraw_screen+0x150/0x248)
>>> [    8.904722]  r10:00000000 r9:edfe3400 r8:00000008 r7:00000001
>>> r6:c17e5a70 r5:00000000
>>> [    8.904726]  r4:ee808c00
>>> [    8.904737] [<c04db4cc>] (redraw_screen) from [<c0498c50>]
>>> (fbcon_do_set_font+0x1e0/0x27c)
>>> [    8.904747]  r8:00000008 r7:c17e5bc8 r6:c17e5a70 r5:ee39c010 r4:ee808c00
>>> [    8.904757] [<c0498a70>] (fbcon_do_set_font) from [<c0498ff0>]
>>> (fbcon_set_font+0x208/0x224)
>>> [    8.904765]  r10:c17e5bc8 r9:0000003e r8:ed0e3dd8 r7:20135b36
>>> r6:c17ebfb4 r5:00000000
>>> [    8.904769]  r4:c17e5bc8
>>> [    8.904782] [<c0498de8>] (fbcon_set_font) from [<c04e0824>]
>>> (con_font_op+0x438/0x4f0)
>>> [    8.904791]  r10:00000000 r9:00bdf9c8 r8:00000000 r7:ee808c00
>>> r6:00000001 r5:ee808c00
>>> [    8.904795]  r4:ed0e3e40
>>> [    8.904817] [<c04e03ec>] (con_font_op) from [<c04d3694>]
>>> (vt_ioctl+0x14a0/0x199c)
>>> [    8.904825]  r10:00000000 r9:ee808dc8 r8:00000000 r7:00000051
>>> r6:00000001 r5:ee808c00
>>> [    8.904829]  r4:bef4633c
>>> [    8.904851] [<c04d21f4>] (vt_ioctl) from [<c04c4c6c>] (tty_ioctl+0x190/0xbcc)
>>> [    8.904860]  r10:00000000 r9:ed0e2000 r8:edfe8c00 r7:bef4633c
>>> r6:edebe000 r5:edfe8c00
>>> [    8.904865]  r4:00004b72
>>> [    8.904880] [<c04c4adc>] (tty_ioctl) from [<c023eab8>]
>>> (do_vfs_ioctl+0xac/0xa2c)
>>> [    8.904888]  r9:ed0e2000 r8:00000003 r7:c023f474 r6:edebe000
>>> r5:eeb242f8 r4:bef4633c
>>> [    8.904896] [<c023ea0c>] (do_vfs_ioctl) from [<c023f474>]
>>> (SyS_ioctl+0x3c/0x64)
>>> [    8.904905]  r10:00000000 r9:ed0e2000 r8:bef4633c r7:00004b72
>>> r6:edebe000 r5:00000003
>>> [    8.904909]  r4:edebe000
>>> [    8.904925] [<c023f438>] (SyS_ioctl) from [<c0108be0>]
>>> (ret_fast_syscall+0x0/0x28)
>>> [    8.904933]  r9:ed0e2000 r8:c0108da4 r7:00000036 r6:00000010
>>> r5:00000008 r4:00027128
>>> [    8.904939] ---[ end trace 3e19c988c4369e20 ]---
>>> [    8.961980] ------------[ cut here ]------------
>>> [    8.962005] WARNING: CPU: 2 PID: 488 at
>>> drivers/gpu/drm/drm_vblank.c:303
>>> drm_crtc_accurate_vblank_count+0x80/0x84
>>> [    8.962010] This function requires support for accurate vblank timestamps.
>>> [    8.962014] Modules linked in: dw_hdmi_cec dw_hdmi_ahb_audio
>>> snd_soc_imx_sgtl5000 snd_soc_imx_spdif snd_soc_fsl_asoc_card
>>> snd_ac97_codec coda videobuf2_dma_contig imx_vdoa v4l2_mem2mem
>>> videobuf2_vmalloc videobuf2_memops dw_hdmi_imx imxdrm dw_hdmi cec
>>> etnaviv imx_ipu_v3 binfmt_misc parport_pc ppdev lp parport
>>> [    8.962099] CPU: 2 PID: 488 Comm: setfont Tainted: G        W
>>> 4.14.0-rc7-gd65d313-dirty #1
>>> [    8.962104] Hardware name: Freescale i.MX6 Quad/DualLite (Device Tree)
>>> [    8.962107] Backtrace:
>>> [    8.962126] [<c010d558>] (dump_backtrace) from [<c010d838>]
>>> (show_stack+0x18/0x1c)
>>> [    8.962134]  r7:c106eed0 r6:00000000 r5:60080093 r4:c106eed0
>>> [    8.962153] [<c010d820>] (show_stack) from [<c09ff10c>]
>>> (dump_stack+0xac/0xd8)
>>> [    8.962168] [<c09ff060>] (dump_stack) from [<c0122d78>] (__warn+0xec/0x104)
>>> [    8.962177]  r10:edf56e00 r9:c0527bd8 r8:0000012f r7:00000009
>>> r6:c0d4fc08 r5:00000000
>>> [    8.962182]  r4:ed41f9f0 r3:00000000
>>> [    8.962192] [<c0122c8c>] (__warn) from [<c0122dd0>]
>>> (warn_slowpath_fmt+0x40/0x48)
>>> [    8.962200]  r9:edc2f3e0 r8:00000001 r7:edc2f000 r6:00000000
>>> r5:edc2f000 r4:c0d50064
>>> [    8.962210] [<c0122d94>] (warn_slowpath_fmt) from [<c0527bd8>]
>>> (drm_crtc_accurate_vblank_count+0x80/0x84)
>>> [    8.962215]  r3:00000000 r2:c0d50064
>>> [    8.962220]  r4:edc2f000
>>> [    8.962229] [<c0527b58>] (drm_crtc_accurate_vblank_count) from
>>> [<c052800c>] (drm_crtc_arm_vblank_event+0x30/0x64)
>>> [    8.962236]  r7:edc2f000 r6:00000001 r5:edc2f000 r4:ed787e80
>>> [    8.962268] [<c0527fdc>] (drm_crtc_arm_vblank_event) from
>>> [<bf0a89bc>] (ipu_crtc_atomic_begin+0x50/0x80 [imxdrm])
>>> [    8.962274]  r5:ed4f9200 r4:edc2b018
>>> [    8.962298] [<bf0a896c>] (ipu_crtc_atomic_begin [imxdrm]) from
>>> [<c04fa720>] (drm_atomic_helper_commit_planes+0x8c/0x2a8)
>>> [    8.962304]  r5:ed4f9200 r4:00000018
>>> [    8.962321] [<c04fa694>] (drm_atomic_helper_commit_planes) from
>>> [<bf0a81a4>] (imx_drm_atomic_commit_tail+0x30/0x144 [imxdrm])
>>> [    8.962330]  r10:edf56e00 r9:edc2f3e0 r8:edfafdf8 r7:edc2f000
>>> r6:ed4f9200 r5:bf0ab088
>>> [    8.962334]  r4:ed4f9200
>>> [    8.962353] [<bf0a8174>] (imx_drm_atomic_commit_tail [imxdrm]) from
>>> [<c04feb1c>] (commit_tail+0x48/0x8c)
>>> [    8.962362]  r10:edf56e00 r9:edc2f3e0 r8:edfafdf8 r7:edc2f000
>>> r6:00000000 r5:bf0ab088
>>> [    8.962367]  r4:ed4f9200 r3:bf0a8174
>>> [    8.962376] [<c04fead4>] (commit_tail) from [<c04fecb8>]
>>> (drm_atomic_helper_commit+0x140/0x148)
>>> [    8.962382]  r5:00000000 r4:ed4f9200
>>> [    8.962397] [<c04feb78>] (drm_atomic_helper_commit) from
>>> [<c051c138>] (drm_atomic_commit+0x54/0x60)
>>> [    8.962404]  r7:ed4f9200 r6:edc2f000 r5:ed4f9200 r4:00000000
>>> [    8.962419] [<c051c0e4>] (drm_atomic_commit) from [<c0501698>]
>>> (restore_fbdev_mode_atomic+0x19c/0x1f8)
>>> [    8.962426]  r7:ed4f9200 r6:00000001 r5:0000003f r4:000000a0
>>> [    8.962436] [<c05014fc>] (restore_fbdev_mode_atomic) from
>>> [<c05019a4>] (drm_fb_helper_pan_display+0xb0/0x1bc)
>>> [    8.962444]  r10:00000000 r9:c04feb78 r8:edfe3400 r7:edf5781c
>>> r6:00000000 r5:edf56ed0
>>> [    8.962448]  r4:edf56e00
>>> [    8.962466] [<c05018f4>] (drm_fb_helper_pan_display) from
>>> [<c048bc58>] (fb_pan_display+0xd4/0x140)
>>> [    8.962474]  r10:00000000 r9:edf57800 r8:00000438 r7:00000000
>>> r6:00000000 r5:edf5781c
>>> [    8.962479]  r4:edfe3400 r3:00000000
>>> [    8.962493] [<c048bb84>] (fb_pan_display) from [<c049a664>]
>>> (bit_update_start+0x1c/0x38)
>>> [    8.962501]  r10:00000000 r9:edf57800 r8:c17e5bc8 r7:c17e5a70
>>> r6:ee808c00 r5:edfe3400
>>> [    8.962506]  r4:edf57800 r3:c049a648
>>> [    8.962516] [<c049a648>] (bit_update_start) from [<c049934c>]
>>> (fbcon_switch+0x340/0x558)
>>> [    8.962521]  r5:edfe3400 r4:ee808dc8
>>> [    8.962535] [<c049900c>] (fbcon_switch) from [<c04db61c>]
>>> (redraw_screen+0x150/0x248)
>>> [    8.962543]  r10:00000000 r9:edfe3400 r8:00000008 r7:00000001
>>> r6:c17e5a70 r5:00000000
>>> [    8.962547]  r4:ee808c00
>>> [    8.962557] [<c04db4cc>] (redraw_screen) from [<c0498c50>]
>>> (fbcon_do_set_font+0x1e0/0x27c)
>>> [    8.962565]  r8:00000008 r7:c17e5bc8 r6:c17e5a70 r5:ee39c010 r4:ee808c00
>>> [    8.962574] [<c0498a70>] (fbcon_do_set_font) from [<c0498ff0>]
>>> (fbcon_set_font+0x208/0x224)
>>> [    8.962583]  r10:c17e5bc8 r9:0000003e r8:ed41fdd8 r7:20135b36
>>> r6:c17ebfb4 r5:00000000
>>> [    8.962587]  r4:c17e5bc8
>>> [    8.962600] [<c0498de8>] (fbcon_set_font) from [<c04e0824>]
>>> (con_font_op+0x438/0x4f0)
>>> [    8.962608]  r10:00000000 r9:00b409c8 r8:00000000 r7:ee808c00
>>> r6:00000001 r5:ee808c00
>>> [    8.962612]  r4:ed41fe40
>>> [    8.962632] [<c04e03ec>] (con_font_op) from [<c04d3694>]
>>> (vt_ioctl+0x14a0/0x199c)
>>> [    8.962641]  r10:00000000 r9:ee808dc8 r8:00000000 r7:00000051
>>> r6:00000001 r5:ee808c00
>>> [    8.962645]  r4:beb4f34c
>>> [    8.962668] [<c04d21f4>] (vt_ioctl) from [<c04c4c6c>] (tty_ioctl+0x190/0xbcc)
>>> [    8.962677]  r10:00000000 r9:ed41e000 r8:edfe8c00 r7:beb4f34c
>>> r6:ededa000 r5:edfe8c00
>>> [    8.962681]  r4:00004b72
>>> [    8.962697] [<c04c4adc>] (tty_ioctl) from [<c023eab8>]
>>> (do_vfs_ioctl+0xac/0xa2c)
>>> [    8.962705]  r9:ed41e000 r8:00000003 r7:c023f474 r6:ededa000
>>> r5:eeb242f8 r4:beb4f34c
>>> [    8.962714] [<c023ea0c>] (do_vfs_ioctl) from [<c023f474>]
>>> (SyS_ioctl+0x3c/0x64)
>>> [    8.962723]  r10:00000000 r9:ed41e000 r8:beb4f34c r7:00004b72
>>> r6:ededa000 r5:00000003
>>> [    8.962727]  r4:ededa000
>>> [    8.962743] [<c023f438>] (SyS_ioctl) from [<c0108be0>]
>>> (ret_fast_syscall+0x0/0x28)
>>> [    8.962755]  r9:ed41e000 r8:c0108da4 r7:00000036 r6:00000010
>>> r5:00000008 r4:00027128
>>> [    8.962765] ---[ end trace 3e19c988c4369e21 ]---
>>> [    8.966733] dw_hdmi_connector_get_modes:1917: dwhdmi-imx
>>> 120000.hdmi: failed to get edid
>>> [    8.967669] ------------[ cut here ]------------
>>> [    8.967706] WARNING: CPU: 1 PID: 15 at
>>> drivers/gpu/drm/drm_vblank.c:303
>>> drm_crtc_accurate_vblank_count+0x80/0x84
>>> [    8.967712] This function requires support for accurate vblank timestamps.
>>> [    8.967716] Modules linked in: dw_hdmi_cec dw_hdmi_ahb_audio
>>> snd_soc_imx_sgtl5000 snd_soc_imx_spdif snd_soc_fsl_asoc_card
>>> snd_ac97_codec coda videobuf2_dma_contig imx_vdoa v4l2_mem2mem
>>> videobuf2_vmalloc videobuf2_memops dw_hdmi_imx imxdrm dw_hdmi cec
>>> etnaviv imx_ipu_v3 binfmt_misc parport_pc ppdev lp parport
>>> [    8.967804] CPU: 1 PID: 15 Comm: kworker/1:0 Tainted: G        W
>>>    4.14.0-rc7-gd65d313-dirty #1
>>> [    8.967809] Hardware name: Freescale i.MX6 Quad/DualLite (Device Tree)
>>> [    8.967831] Workqueue: events output_poll_execute
>>> [    8.967838] Backtrace:
>>> [    8.967860] [<c010d558>] (dump_backtrace) from [<c010d838>]
>>> (show_stack+0x18/0x1c)
>>> [    8.967868]  r7:c106eed0 r6:00000000 r5:600d0193 r4:c106eed0
>>> [    8.967891] [<c010d820>] (show_stack) from [<c09ff10c>]
>>> (dump_stack+0xac/0xd8)
>>> [    8.967909] [<c09ff060>] (dump_stack) from [<c0122d78>] (__warn+0xec/0x104)
>>> [    8.967919]  r10:edf56e00 r9:c0527bd8 r8:0000012f r7:00000009
>>> r6:c0d4fc08 r5:00000000
>>> [    8.967924]  r4:ee8a7c00 r3:00000000
>>> [    8.967934] [<c0122c8c>] (__warn) from [<c0122dd0>]
>>> (warn_slowpath_fmt+0x40/0x48)
>>> [    8.967943]  r9:edc2f3e0 r8:00000001 r7:edc2f000 r6:00000000
>>> r5:edc2f000 r4:c0d50064
>>> [    8.967954] [<c0122d94>] (warn_slowpath_fmt) from [<c0527bd8>]
>>> (drm_crtc_accurate_vblank_count+0x80/0x84)
>>> [    8.967960]  r3:00000000 r2:c0d50064
>>> [    8.967964]  r4:edc2f000
>>> [    8.967975] [<c0527b58>] (drm_crtc_accurate_vblank_count) from
>>> [<c052800c>] (drm_crtc_arm_vblank_event+0x30/0x64)
>>> [    8.967982]  r7:edc2f000 r6:00000001 r5:edc2f000 r4:ed1cd900
>>> [    8.968020] [<c0527fdc>] (drm_crtc_arm_vblank_event) from
>>> [<bf0a89bc>] (ipu_crtc_atomic_begin+0x50/0x80 [imxdrm])
>>> [    8.968027]  r5:ed1cd080 r4:edc2b018
>>> [    8.968051] [<bf0a896c>] (ipu_crtc_atomic_begin [imxdrm]) from
>>> [<c04fa720>] (drm_atomic_helper_commit_planes+0x8c/0x2a8)
>>> [    8.968057]  r5:ed1cd080 r4:00000018
>>> [    8.968076] [<c04fa694>] (drm_atomic_helper_commit_planes) from
>>> [<bf0a81a4>] (imx_drm_atomic_commit_tail+0x30/0x144 [imxdrm])
>>> [    8.968085]  r10:edf56e00 r9:edc2f3e0 r8:edfafdf8 r7:edc2f000
>>> r6:ed1cd080 r5:bf0ab088
>>> [    8.968089]  r4:ed1cd080
>>> [    8.968107] [<bf0a8174>] (imx_drm_atomic_commit_tail [imxdrm]) from
>>> [<c04feb1c>] (commit_tail+0x48/0x8c)
>>> [    8.968116]  r10:edf56e00 r9:edc2f3e0 r8:edfafdf8 r7:edc2f000
>>> r6:00000000 r5:bf0ab088
>>> [    8.968121]  r4:ed1cd080 r3:bf0a8174
>>> [    8.968131] [<c04fead4>] (commit_tail) from [<c04fecb8>]
>>> (drm_atomic_helper_commit+0x140/0x148)
>>> [    8.968136]  r5:00000000 r4:ed1cd080
>>> [    8.968151] [<c04feb78>] (drm_atomic_helper_commit) from
>>> [<c051c138>] (drm_atomic_commit+0x54/0x60)
>>> [    8.968159]  r7:ed1cd080 r6:edc2f000 r5:ed1cd080 r4:00000000
>>> [    8.968172] [<c051c0e4>] (drm_atomic_commit) from [<c0501698>]
>>> (restore_fbdev_mode_atomic+0x19c/0x1f8)
>>> [    8.968179]  r7:ed1cd080 r6:00000001 r5:0000003f r4:000000a0
>>> [    8.968192] [<c05014fc>] (restore_fbdev_mode_atomic) from
>>> [<c0501724>] (restore_fbdev_mode+0x30/0x168)
>>> [    8.968200]  r10:00000001 r9:00000000 r8:edc2f254 r7:edf56e00
>>> r6:edf56ed0 r5:edf56ed0
>>> [    8.968204]  r4:edf56e00
>>> [    8.968219] [<c05016f4>] (restore_fbdev_mode) from [<c0504740>]
>>> (drm_fb_helper_restore_fbdev_mode_unlocked.part.8+0x28/0x7c)
>>> [    8.968227]  r10:00000001 r9:00000000 r8:edc2f254 r7:00000001
>>> r6:edf56ed0 r5:edf56ed0
>>> [    8.968231]  r4:edf56e00
>>> [    8.968246] [<c0504718>]
>>> (drm_fb_helper_restore_fbdev_mode_unlocked.part.8) from [<c0504834>]
>>> (drm_fb_helper_set_par+0x5c/0x8c)
>>> [    8.968252]  r7:00000001 r6:edf56ed0 r5:00000000 r4:00000000
>>> [    8.968263] [<c05047d8>] (drm_fb_helper_set_par) from [<c05046d0>]
>>> (drm_fb_helper_hotplug_event.part.7+0xa4/0xbc)
>>> [    8.968268]  r5:00000000 r4:edf56e00
>>> [    8.968280] [<c050462c>] (drm_fb_helper_hotplug_event.part.7) from
>>> [<c0504714>] (drm_fb_helper_hotplug_event+0x2c/0x30)
>>> [    8.968286]  r7:00000001 r6:00000000 r5:edc2f000 r4:edc2f000
>>> [    8.968297] [<c05046e8>] (drm_fb_helper_hotplug_event) from
>>> [<c0504e34>] (drm_fbdev_cma_hotplug_event+0x18/0x1c)
>>> [    8.968321] [<c0504e1c>] (drm_fbdev_cma_hotplug_event) from
>>> [<bf0a82d0>] (imx_drm_output_poll_changed+0x18/0x1c [imxdrm])
>>> [    8.968348] [<bf0a82b8>] (imx_drm_output_poll_changed [imxdrm])
>>> from [<c04f3fbc>] (drm_kms_helper_hotplug_event+0x2c/0x30)
>>> [    8.968360] [<c04f3f90>] (drm_kms_helper_hotplug_event) from
>>> [<c04f41a0>] (output_poll_execute+0x190/0x1a4)
>>> [    8.968366]  r5:edc2f000 r4:edc2f418
>>> [    8.968381] [<c04f4010>] (output_poll_execute) from [<c013f1c4>]
>>> (process_one_work+0x258/0x4f0)
>>> [    8.968389]  r10:00000001 r9:00000000 r8:eefaed00 r7:ee8a7ef8
>>> r6:eefabcc0 r5:ee83bb00
>>> [    8.968393]  r4:edc2f418
>>> [    8.968403] [<c013ef6c>] (process_one_work) from [<c01400e8>]
>>> (worker_thread+0x58/0x59c)
>>> [    8.968412]  r10:ee8a6000 r9:eefabcf4 r8:c1004900 r7:00000008
>>> r6:ee83bb18 r5:eefabcc0
>>> [    8.968416]  r4:ee83bb00
>>> [    8.968427] [<c0140090>] (worker_thread) from [<c01462c0>]
>>> (kthread+0x140/0x16c)
>>> [    8.968435]  r10:ee85bd94 r9:ee83bc38 r8:ee83bb00 r7:ee8a6000
>>> r6:ee840180 r5:00000000
>>> [    8.968439]  r4:ee83bc00
>>> [    8.968453] [<c0146180>] (kthread) from [<c0108c88>]
>>> (ret_from_fork+0x14/0x2c)
>>> [    8.968461]  r10:00000000 r9:00000000 r8:00000000 r7:00000000
>>> r6:00000000 r5:c0146180
>>> [    8.968465]  r4:ee840180
>>> [    8.968471] ---[ end trace 3e19c988c4369e22 ]---
>>> [   10.604619] Atheros 8035 ethernet 2188000.ethernet-1:01: attached
>>> PHY driver [Atheros 8035 ethernet]
>>> (mii_bus:phy_addr=2188000.ethernet-1:01, irq=POLL)
>>> [   10.605926] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
>>> [   14.077150] fec 2188000.ethernet eth0: Link is Up - 1Gbps/Full -
>>> flow control rx/tx
>>> [   14.078035] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
>>> [   17.600543] ------------[ cut here ]------------
>>> [   17.600578] WARNING: CPU: 2 PID: 782 at
>>> drivers/gpu/drm/drm_vblank.c:303
>>> drm_crtc_accurate_vblank_count+0x80/0x84
>>> [   17.600582] This function requires support for accurate vblank timestamps.
>>> [   17.600586] Modules linked in: dw_hdmi_cec dw_hdmi_ahb_audio
>>> snd_soc_imx_sgtl5000 snd_soc_imx_spdif snd_soc_fsl_asoc_card
>>> snd_ac97_codec coda videobuf2_dma_contig imx_vdoa v4l2_mem2mem
>>> videobuf2_vmalloc videobuf2_memops dw_hdmi_imx imxdrm dw_hdmi cec
>>> etnaviv imx_ipu_v3 binfmt_misc parport_pc ppdev lp parport
>>> [   17.600672] CPU: 2 PID: 782 Comm: Xorg.wrap Tainted: G        W
>>>   4.14.0-rc7-gd65d313-dirty #1
>>> [   17.600676] Hardware name: Freescale i.MX6 Quad/DualLite (Device Tree)
>>> [   17.600680] Backtrace:
>>> [   17.600697] [<c010d558>] (dump_backtrace) from [<c010d838>]
>>> (show_stack+0x18/0x1c)
>>> [   17.600705]  r7:c106eed0 r6:00000000 r5:600f0093 r4:c106eed0
>>> [   17.600723] [<c010d820>] (show_stack) from [<c09ff10c>]
>>> (dump_stack+0xac/0xd8)
>>> [   17.600737] [<c09ff060>] (dump_stack) from [<c0122d78>] (__warn+0xec/0x104)
>>> [   17.600746]  r10:edf56e00 r9:c0527bd8 r8:0000012f r7:00000009
>>> r6:c0d4fc08 r5:00000000
>>> [   17.600751]  r4:ed059c80 r3:00000000
>>> [   17.600760] [<c0122c8c>] (__warn) from [<c0122dd0>]
>>> (warn_slowpath_fmt+0x40/0x48)
>>> [   17.600769]  r9:edc2f3e0 r8:00000001 r7:edc2f000 r6:00000000
>>> r5:edc2f000 r4:c0d50064
>>> [   17.600781] [<c0122d94>] (warn_slowpath_fmt) from [<c0527bd8>]
>>> (drm_crtc_accurate_vblank_count+0x80/0x84)
>>> [   17.600786]  r3:00000000 r2:c0d50064
>>> [   17.600790]  r4:edc2f000
>>> [   17.600800] [<c0527b58>] (drm_crtc_accurate_vblank_count) from
>>> [<c052800c>] (drm_crtc_arm_vblank_event+0x30/0x64)
>>> [   17.600807]  r7:edc2f000 r6:00000001 r5:edc2f000 r4:ed042b00
>>> [   17.600836] [<c0527fdc>] (drm_crtc_arm_vblank_event) from
>>> [<bf0a89bc>] (ipu_crtc_atomic_begin+0x50/0x80 [imxdrm])
>>> [   17.600844]  r5:ed409300 r4:edc2b018
>>> [   17.600867] [<bf0a896c>] (ipu_crtc_atomic_begin [imxdrm]) from
>>> [<c04fa720>] (drm_atomic_helper_commit_planes+0x8c/0x2a8)
>>> [   17.600874]  r5:ed409300 r4:00000018
>>> [   17.600892] [<c04fa694>] (drm_atomic_helper_commit_planes) from
>>> [<bf0a81a4>] (imx_drm_atomic_commit_tail+0x30/0x144 [imxdrm])
>>> [   17.600901]  r10:edf56e00 r9:edc2f3e0 r8:edfafdf8 r7:edc2f000
>>> r6:ed409300 r5:bf0ab088
>>> [   17.600905]  r4:ed409300
>>> [   17.600923] [<bf0a8174>] (imx_drm_atomic_commit_tail [imxdrm]) from
>>> [<c04feb1c>] (commit_tail+0x48/0x8c)
>>> [   17.600932]  r10:edf56e00 r9:edc2f3e0 r8:edfafdf8 r7:edc2f000
>>> r6:00000000 r5:bf0ab088
>>> [   17.600937]  r4:ed409300 r3:bf0a8174
>>> [   17.600947] [<c04fead4>] (commit_tail) from [<c04fecb8>]
>>> (drm_atomic_helper_commit+0x140/0x148)
>>> [   17.600952]  r5:00000000 r4:ed409300
>>> [   17.600968] [<c04feb78>] (drm_atomic_helper_commit) from
>>> [<c051c138>] (drm_atomic_commit+0x54/0x60)
>>> [   17.600975]  r7:ed409300 r6:edc2f000 r5:ed409300 r4:00000000
>>> [   17.600987] [<c051c0e4>] (drm_atomic_commit) from [<c0501698>]
>>> (restore_fbdev_mode_atomic+0x19c/0x1f8)
>>> [   17.600993]  r7:ed409300 r6:00000001 r5:0000003f r4:000000a0
>>> [   17.601004] [<c05014fc>] (restore_fbdev_mode_atomic) from
>>> [<c0501724>] (restore_fbdev_mode+0x30/0x168)
>>> [   17.601012]  r10:edf5ecec r9:edc2f214 r8:00000000 r7:edf56e00
>>> r6:edf5ed00 r5:edf56ed0
>>> [   17.601016]  r4:edf56e00
>>> [   17.601029] [<c05016f4>] (restore_fbdev_mode) from [<c0504740>]
>>> (drm_fb_helper_restore_fbdev_mode_unlocked.part.8+0x28/0x7c)
>>> [   17.601037]  r10:edf5ecec r9:edc2f214 r8:00000000 r7:edc2f0f0
>>> r6:edf5ed00 r5:edf56ed0
>>> [   17.601041]  r4:edf56e00
>>> [   17.601053] [<c0504718>]
>>> (drm_fb_helper_restore_fbdev_mode_unlocked.part.8) from [<c05047cc>]
>>> (drm_fb_helper_restore_fbdev_mode_unlocked+0x38/0x44)
>>> [   17.601060]  r7:edc2f0f0 r6:edf5ed00 r5:edc2f000 r4:edc2f000
>>> [   17.601071] [<c0504794>]
>>> (drm_fb_helper_restore_fbdev_mode_unlocked) from [<c0504e18>]
>>> (drm_fbdev_cma_restore_mode+0x18/0x1c)
>>> [   17.601091] [<c0504e00>] (drm_fbdev_cma_restore_mode) from
>>> [<bf0a82ec>] (imx_drm_driver_lastclose+0x18/0x1c [imxdrm])
>>> [   17.601108] [<bf0a82d4>] (imx_drm_driver_lastclose [imxdrm]) from
>>> [<c0508ec0>] (drm_lastclose+0x40/0xd4)
>>> [   17.601117] [<c0508e80>] (drm_lastclose) from [<c05091fc>]
>>> (drm_release+0x2a8/0x364)
>>> [   17.601123]  r5:edc2f000 r4:edf5ec00
>>> [   17.601137] [<c0508f54>] (drm_release) from [<c022bf20>] (__fput+0x94/0x1e0)
>>> [   17.601146]  r10:00000008 r9:ed759f28 r8:00000000 r7:edb5fc38
>>> r6:ee8d9410 r5:ed759f28
>>> [   17.601150]  r4:edee97c0
>>> [   17.601158] [<c022be8c>] (__fput) from [<c022c0cc>] (____fput+0x10/0x14)
>>> [   17.601167]  r10:00000000 r9:edee97c0 r8:c1087070 r7:edfc5dc4
>>> r6:edfc5940 r5:edfc5d94
>>> [   17.601171]  r4:00000000
>>> [   17.601186] [<c022c0bc>] (____fput) from [<c0144754>]
>>> (task_work_run+0x9c/0xc0)
>>> [   17.601202] [<c01446b8>] (task_work_run) from [<c010cc70>]
>>> (do_work_pending+0x94/0xbc)
>>> [   17.601210]  r9:ed058000 r8:c0108da4 r7:ed059fb0 r6:c0108da4
>>> r5:ed058000 r4:00000004
>>> [   17.601220] [<c010cbdc>] (do_work_pending) from [<c0108c14>]
>>> (slow_work_pending+0xc/0x20)
>>> [   17.601227]  r7:00000006 r6:00000003 r5:be9c9cb4 r4:00000001
>>> [   17.601231] ---[ end trace 3e19c988c4369e23 ]---
>>> [   17.609550] ------------[ cut here ]------------
>>> [   17.609591] WARNING: CPU: 3 PID: 783 at
>>> drivers/gpu/drm/drm_vblank.c:303
>>> drm_crtc_accurate_vblank_count+0x80/0x84
>>> [   17.609599] This function requires support for accurate vblank timestamps.
>>> [   17.609603] Modules linked in: dw_hdmi_cec dw_hdmi_ahb_audio
>>> snd_soc_imx_sgtl5000 snd_soc_imx_spdif snd_soc_fsl_asoc_card
>>> snd_ac97_codec coda videobuf2_dma_contig imx_vdoa v4l2_mem2mem
>>> videobuf2_vmalloc videobuf2_memops dw_hdmi_imx imxdrm dw_hdmi cec
>>> etnaviv imx_ipu_v3 binfmt_misc parport_pc ppdev lp parport
>>> [   17.609687] CPU: 3 PID: 783 Comm: (agetty) Tainted: G        W
>>>  4.14.0-rc7-gd65d313-dirty #1
>>> [   17.609692] Hardware name: Freescale i.MX6 Quad/DualLite (Device Tree)
>>> [   17.609696] Backtrace:
>>> [   17.609715] [<c010d558>] (dump_backtrace) from [<c010d838>]
>>> (show_stack+0x18/0x1c)
>>> [   17.609726]  r7:c106eed0 r6:00000000 r5:600b0093 r4:c106eed0
>>> [   17.609744] [<c010d820>] (show_stack) from [<c09ff10c>]
>>> (dump_stack+0xac/0xd8)
>>> [   17.609760] [<c09ff060>] (dump_stack) from [<c0122d78>] (__warn+0xec/0x104)
>>> [   17.609769]  r10:edf56e00 r9:c0527bd8 r8:0000012f r7:00000009
>>> r6:c0d4fc08 r5:00000000
>>> [   17.609774]  r4:ed5e99b8 r3:00000000
>>> [   17.609784] [<c0122c8c>] (__warn) from [<c0122dd0>]
>>> (warn_slowpath_fmt+0x40/0x48)
>>> [   17.609793]  r9:edc2f3e0 r8:00000001 r7:edc2f000 r6:00000000
>>> r5:edc2f000 r4:c0d50064
>>> [   17.609804] [<c0122d94>] (warn_slowpath_fmt) from [<c0527bd8>]
>>> (drm_crtc_accurate_vblank_count+0x80/0x84)
>>> [   17.609811]  r3:00000000 r2:c0d50064
>>> [   17.609815]  r4:edc2f000
>>> [   17.609825] [<c0527b58>] (drm_crtc_accurate_vblank_count) from
>>> [<c052800c>] (drm_crtc_arm_vblank_event+0x30/0x64)
>>> [   17.609832]  r7:edc2f000 r6:00000001 r5:edc2f000 r4:ed043980
>>> [   17.609872] [<c0527fdc>] (drm_crtc_arm_vblank_event) from
>>> [<bf0a89bc>] (ipu_crtc_atomic_begin+0x50/0x80 [imxdrm])
>>> [   17.609878]  r5:edc3f780 r4:edc2b018
>>> [   17.609908] [<bf0a896c>] (ipu_crtc_atomic_begin [imxdrm]) from
>>> [<c04fa720>] (drm_atomic_helper_commit_planes+0x8c/0x2a8)
>>> [   17.609914]  r5:edc3f780 r4:00000018
>>> [   17.609933] [<c04fa694>] (drm_atomic_helper_commit_planes) from
>>> [<bf0a81a4>] (imx_drm_atomic_commit_tail+0x30/0x144 [imxdrm])
>>> [   17.609942]  r10:edf56e00 r9:edc2f3e0 r8:edfafdf8 r7:edc2f000
>>> r6:edc3f780 r5:bf0ab088
>>> [   17.609947]  r4:edc3f780
>>> [   17.609971] [<bf0a8174>] (imx_drm_atomic_commit_tail [imxdrm]) from
>>> [<c04feb1c>] (commit_tail+0x48/0x8c)
>>> [   17.609980]  r10:edf56e00 r9:edc2f3e0 r8:edfafdf8 r7:edc2f000
>>> r6:00000000 r5:bf0ab088
>>> [   17.609985]  r4:edc3f780 r3:bf0a8174
>>> [   17.609996] [<c04fead4>] (commit_tail) from [<c04fecb8>]
>>> (drm_atomic_helper_commit+0x140/0x148)
>>> [   17.610002]  r5:00000000 r4:edc3f780
>>> [   17.610020] [<c04feb78>] (drm_atomic_helper_commit) from
>>> [<c051c138>] (drm_atomic_commit+0x54/0x60)
>>> [   17.610029]  r7:edc3f780 r6:edc2f000 r5:edc3f780 r4:00000000
>>> [   17.610043] [<c051c0e4>] (drm_atomic_commit) from [<c0501698>]
>>> (restore_fbdev_mode_atomic+0x19c/0x1f8)
>>> [   17.610050]  r7:edc3f780 r6:00000001 r5:0000003f r4:000000a0
>>> [   17.610061] [<c05014fc>] (restore_fbdev_mode_atomic) from
>>> [<c05019a4>] (drm_fb_helper_pan_display+0xb0/0x1bc)
>>> [   17.610070]  r10:00000000 r9:c04feb78 r8:edfe3400 r7:edf5781c
>>> r6:00000000 r5:edf56ed0
>>> [   17.610074]  r4:edf56e00
>>> [   17.610104] [<c05018f4>] (drm_fb_helper_pan_display) from
>>> [<c048bc58>] (fb_pan_display+0xd4/0x140)
>>> [   17.610116]  r10:00000000 r9:edf57800 r8:00000438 r7:00000000
>>> r6:00000000 r5:edf5781c
>>> [   17.610121]  r4:edfe3400 r3:00000000
>>> [   17.610137] [<c048bb84>] (fb_pan_display) from [<c049a664>]
>>> (bit_update_start+0x1c/0x38)
>>> [   17.610146]  r10:00000000 r9:edf57800 r8:c17e5bc8 r7:c17e5a70
>>> r6:ee808c00 r5:edfe3400
>>> [   17.610152]  r4:edf57800 r3:c049a648
>>> [   17.610163] [<c049a648>] (bit_update_start) from [<c049934c>]
>>> (fbcon_switch+0x340/0x558)
>>> [   17.610170]  r5:edfe3400 r4:ee808dc8
>>> [   17.610188] [<c049900c>] (fbcon_switch) from [<c04db61c>]
>>> (redraw_screen+0x150/0x248)
>>> [   17.610200]  r10:0000000a r9:ee808c00 r8:00000000 r7:00000001
>>> r6:ee808e34 r5:00000000
>>> [   17.610205]  r4:ee808c00
>>> [   17.610219] [<c04db4cc>] (redraw_screen) from [<c04db848>]
>>> (csi_J+0x134/0x160)
>>> [   17.610227]  r8:00000000 r7:c0bb934c r6:ee808e34 r5:ed4d4c00 r4:ee808c00
>>> [   17.610240] [<c04db714>] (csi_J) from [<c04df7cc>]
>>> (do_con_trol+0x14b8/0x1688)
>>> [   17.610247]  r7:c0bb934c r6:ed4d4c00 r5:ed4d4c00 r4:ee808c00
>>> [   17.610259] [<c04de314>] (do_con_trol) from [<c04dfba8>]
>>> (do_con_write.part.9+0x20c/0x95c)
>>> [   17.610268]  r10:0000000a r9:ee808c00 r8:00000000 r7:c0bb934c
>>> r6:ed4d4c00 r5:ffffffff
>>> [   17.610272]  r4:0000004a
>>> [   17.610282] [<c04df99c>] (do_con_write.part.9) from [<c04e03dc>]
>>> (con_write+0x80/0x90)
>>> [   17.610291]  r10:00000000 r9:f27e529c r8:edef2b40 r7:c0bb934c
>>> r6:ed4d4c00 r5:0000000a
>>> [   17.610295]  r4:ffffe000
>>> [   17.610320] [<c04e035c>] (con_write) from [<c04c7dc8>]
>>> (n_tty_write+0x1c8/0x45c)
>>> [   17.610327]  r7:c0bb934c r6:ed4d4000 r5:0000000a r4:ed4d4c00
>>> [   17.610339] [<c04c7c00>] (n_tty_write) from [<c04c3e80>]
>>> (tty_write+0x1f8/0x314)
>>> [   17.610347]  r10:00000400 r9:ed5e8000 r8:00000000 r7:0000000a
>>> r6:004dc55c r5:0000000a
>>> [   17.610351]  r4:ed4d4c00
>>> [   17.610374] [<c04c3c88>] (tty_write) from [<c022ade8>]
>>> (__vfs_write+0x34/0x134)
>>> [   17.610382]  r10:00000000 r9:0000000a r8:ed5e9f78 r7:ed5e9f78
>>> r6:004dc55c r5:c04c3c88
>>> [   17.610386]  r4:edef2b40
>>> [   17.610396] [<c022adb4>] (__vfs_write) from [<c022b06c>]
>>> (vfs_write+0xac/0x170)
>>> [   17.610404]  r10:00000000 r9:0000000a r8:00000000 r7:ed5e9f78
>>> r6:004dc55c r5:edef2b40
>>> [   17.610408]  r4:0000000a
>>> [   17.610418] [<c022afc0>] (vfs_write) from [<c022b248>] (SyS_write+0x44/0x98)
>>> [   17.610429]  r9:0000000a r8:004dc55c r7:00000000 r6:00000000
>>> r5:edef2b40 r4:edef2b40
>>> [   17.610448] [<c022b204>] (SyS_write) from [<c0108be0>]
>>> (ret_fast_syscall+0x0/0x28)
>>> [   17.610460]  r9:ed5e8000 r8:c0108da4 r7:00000004 r6:00000003
>>> r5:004dc55c r4:0000000a
>>> [   17.610466] ---[ end trace 3e19c988c4369e24 ]---
>>> [   17.768287] ------------[ cut here ]------------
>>> [   17.768355] WARNING: CPU: 2 PID: 782 at
>>> drivers/gpu/drm/drm_vblank.c:303
>>> drm_crtc_accurate_vblank_count+0x80/0x84
>>> [   17.768365] This function requires support for accurate vblank timestamps.
>>> [   17.768373] Modules linked in: dw_hdmi_cec dw_hdmi_ahb_audio
>>> snd_soc_imx_sgtl5000 snd_soc_imx_spdif snd_soc_fsl_asoc_card
>>> snd_ac97_codec coda videobuf2_dma_contig imx_vdoa v4l2_mem2mem
>>> videobuf2_vmalloc videobuf2_memops dw_hdmi_imx imxdrm dw_hdmi cec
>>> etnaviv imx_ipu_v3 binfmt_misc parport_pc ppdev lp parport
>>> [   17.768564] CPU: 2 PID: 782 Comm: Xorg Tainted: G        W
>>> 4.14.0-rc7-gd65d313-dirty #1
>>> [   17.768573] Hardware name: Freescale i.MX6 Quad/DualLite (Device Tree)
>>> [   17.768581] Backtrace:
>>> [   17.768608] [<c010d558>] (dump_backtrace) from [<c010d838>]
>>> (show_stack+0x18/0x1c)
>>> [   17.768621]  r7:c106eed0 r6:00000000 r5:60070093 r4:c106eed0
>>> [   17.768646] [<c010d820>] (show_stack) from [<c09ff10c>]
>>> (dump_stack+0xac/0xd8)
>>> [   17.768668] [<c09ff060>] (dump_stack) from [<c0122d78>] (__warn+0xec/0x104)
>>> [   17.768683]  r10:edf56e00 r9:c0527bd8 r8:0000012f r7:00000009
>>> r6:c0d4fc08 r5:00000000
>>> [   17.768693]  r4:ed059c80 r3:00000006
>>> [   17.768709] [<c0122c8c>] (__warn) from [<c0122dd0>]
>>> (warn_slowpath_fmt+0x40/0x48)
>>> [   17.768724]  r9:edc2f3e0 r8:00000001 r7:edc2f000 r6:00000000
>>> r5:edc2f000 r4:c0d50064
>>> [   17.768742] [<c0122d94>] (warn_slowpath_fmt) from [<c0527bd8>]
>>> (drm_crtc_accurate_vblank_count+0x80/0x84)
>>> [   17.768752]  r3:00000000 r2:c0d50064
>>> [   17.768761]  r4:edc2f000
>>> [   17.768776] [<c0527b58>] (drm_crtc_accurate_vblank_count) from
>>> [<c052800c>] (drm_crtc_arm_vblank_event+0x30/0x64)
>>> [   17.768788]  r7:edc2f000 r6:00000001 r5:edc2f000 r4:ed045800
>>> [   17.768827] [<c0527fdc>] (drm_crtc_arm_vblank_event) from
>>> [<bf0a89bc>] (ipu_crtc_atomic_begin+0x50/0x80 [imxdrm])
>>> [   17.768838]  r5:ed045200 r4:edc2b018
>>> [   17.768869] [<bf0a896c>] (ipu_crtc_atomic_begin [imxdrm]) from
>>> [<c04fa720>] (drm_atomic_helper_commit_planes+0x8c/0x2a8)
>>> [   17.768880]  r5:ed045200 r4:00000018
>>> [   17.768905] [<c04fa694>] (drm_atomic_helper_commit_planes) from
>>> [<bf0a81a4>] (imx_drm_atomic_commit_tail+0x30/0x144 [imxdrm])
>>> [   17.768921]  r10:edf56e00 r9:edc2f3e0 r8:edfafdf8 r7:edc2f000
>>> r6:ed045200 r5:bf0ab088
>>> [   17.768930]  r4:ed045200
>>> [   17.768957] [<bf0a8174>] (imx_drm_atomic_commit_tail [imxdrm]) from
>>> [<c04feb1c>] (commit_tail+0x48/0x8c)
>>> [   17.768972]  r10:edf56e00 r9:edc2f3e0 r8:edfafdf8 r7:edc2f000
>>> r6:00000000 r5:bf0ab088
>>> [   17.768982]  r4:ed045200 r3:bf0a8174
>>> [   17.768998] [<c04fead4>] (commit_tail) from [<c04fecb8>]
>>> (drm_atomic_helper_commit+0x140/0x148)
>>> [   17.769008]  r5:00000000 r4:ed045200
>>> [   17.769030] [<c04feb78>] (drm_atomic_helper_commit) from
>>> [<c051c138>] (drm_atomic_commit+0x54/0x60)
>>> [   17.769042]  r7:ed045200 r6:edc2f000 r5:ed045200 r4:00000000
>>> [   17.769061] [<c051c0e4>] (drm_atomic_commit) from [<c0501698>]
>>> (restore_fbdev_mode_atomic+0x19c/0x1f8)
>>> [   17.769074]  r7:ed045200 r6:00000001 r5:0000003f r4:000000a0
>>> [   17.769091] [<c05014fc>] (restore_fbdev_mode_atomic) from
>>> [<c0501724>] (restore_fbdev_mode+0x30/0x168)
>>> [   17.769105]  r10:ed43baec r9:edc2f214 r8:00000000 r7:edf56e00
>>> r6:ed43bb00 r5:edf56ed0
>>> [   17.769113]  r4:edf56e00
>>> [   17.769133] [<c05016f4>] (restore_fbdev_mode) from [<c0504740>]
>>> (drm_fb_helper_restore_fbdev_mode_unlocked.part.8+0x28/0x7c)
>>> [   17.769147]  r10:ed43baec r9:edc2f214 r8:00000000 r7:edc2f0f0
>>> r6:ed43bb00 r5:edf56ed0
>>> [   17.769156]  r4:edf56e00
>>> [   17.769174] [<c0504718>]
>>> (drm_fb_helper_restore_fbdev_mode_unlocked.part.8) from [<c05047cc>]
>>> (drm_fb_helper_restore_fbdev_mode_unlocked+0x38/0x44)
>>> [   17.769186]  r7:edc2f0f0 r6:ed43bb00 r5:edc2f000 r4:edc2f000
>>> [   17.769204] [<c0504794>]
>>> (drm_fb_helper_restore_fbdev_mode_unlocked) from [<c0504e18>]
>>> (drm_fbdev_cma_restore_mode+0x18/0x1c)
>>> [   17.769234] [<c0504e00>] (drm_fbdev_cma_restore_mode) from
>>> [<bf0a82ec>] (imx_drm_driver_lastclose+0x18/0x1c [imxdrm])
>>> [   17.769261] [<bf0a82d4>] (imx_drm_driver_lastclose [imxdrm]) from
>>> [<c0508ec0>] (drm_lastclose+0x40/0xd4)
>>> [   17.769275] [<c0508e80>] (drm_lastclose) from [<c05091fc>]
>>> (drm_release+0x2a8/0x364)
>>> [   17.769286]  r5:edc2f000 r4:ed43ba00
>>> [   17.769308] [<c0508f54>] (drm_release) from [<c022bf20>] (__fput+0x94/0x1e0)
>>> [   17.769322]  r10:00000008 r9:ed759f28 r8:00000000 r7:edb5fc38
>>> r6:ee8d9410 r5:ed759f28
>>> [   17.769331]  r4:edee8280
>>> [   17.769345] [<c022be8c>] (__fput) from [<c022c0cc>] (____fput+0x10/0x14)
>>> [   17.769359]  r10:00000000 r9:edee8280 r8:c1087070 r7:edfc5dc4
>>> r6:edfc5940 r5:edfc5d94
>>> [   17.769368]  r4:00000000
>>> [   17.769388] [<c022c0bc>] (____fput) from [<c0144754>]
>>> (task_work_run+0x9c/0xc0)
>>> [   17.769413] [<c01446b8>] (task_work_run) from [<c010cc70>]
>>> (do_work_pending+0x94/0xbc)
>>> [   17.769427]  r9:ed058000 r8:c0108da4 r7:ed059fb0 r6:c0108da4
>>> r5:ed058000 r4:00000004
>>> [   17.769444] [<c010cbdc>] (do_work_pending) from [<c0108c14>]
>>> (slow_work_pending+0xc/0x20)
>>> [   17.769457]  r7:00000006 r6:021d01e0 r5:00000000 r4:0000000a
>>> [   17.769466] ---[ end trace 3e19c988c4369e25 ]---
>>> [   17.848753] ------------[ cut here ]------------
>>> [   17.848786] WARNING: CPU: 0 PID: 29 at
>>> drivers/gpu/drm/drm_vblank.c:303
>>> drm_crtc_accurate_vblank_count+0x80/0x84
>>> [   17.848790] This function requires support for accurate vblank timestamps.
>>> [   17.848795] Modules linked in: dw_hdmi_cec dw_hdmi_ahb_audio
>>> snd_soc_imx_sgtl5000 snd_soc_imx_spdif snd_soc_fsl_asoc_card
>>> snd_ac97_codec coda videobuf2_dma_contig imx_vdoa v4l2_mem2mem
>>> videobuf2_vmalloc videobuf2_memops dw_hdmi_imx imxdrm dw_hdmi cec
>>> etnaviv imx_ipu_v3 binfmt_misc parport_pc ppdev lp parport
>>> [   17.848879] CPU: 0 PID: 29 Comm: kworker/0:1 Tainted: G        W
>>>    4.14.0-rc7-gd65d313-dirty #1
>>> [   17.848884] Hardware name: Freescale i.MX6 Quad/DualLite (Device Tree)
>>> [   17.848896] Workqueue: events console_callback
>>> [   17.848904] Backtrace:
>>> [   17.848919] [<c010d558>] (dump_backtrace) from [<c010d838>]
>>> (show_stack+0x18/0x1c)
>>> [   17.848928]  r7:c106eed0 r6:00000000 r5:60080093 r4:c106eed0
>>> [   17.848944] [<c010d820>] (show_stack) from [<c09ff10c>]
>>> (dump_stack+0xac/0xd8)
>>> [   17.848959] [<c09ff060>] (dump_stack) from [<c0122d78>] (__warn+0xec/0x104)
>>> [   17.848968]  r10:edf56e00 r9:c0527bd8 r8:0000012f r7:00000009
>>> r6:c0d4fc08 r5:00000000
>>> [   17.848973]  r4:ee993b48 r3:00000000
>>> [   17.848983] [<c0122c8c>] (__warn) from [<c0122dd0>]
>>> (warn_slowpath_fmt+0x40/0x48)
>>> [   17.848991]  r9:edc2f3e0 r8:00000001 r7:edc2f000 r6:00000000
>>> r5:edc2f000 r4:c0d50064
>>> [   17.849002] [<c0122d94>] (warn_slowpath_fmt) from [<c0527bd8>]
>>> (drm_crtc_accurate_vblank_count+0x80/0x84)
>>> [   17.849007]  r3:00000000 r2:c0d50064
>>> [   17.849011]  r4:edc2f000
>>> [   17.849021] [<c0527b58>] (drm_crtc_accurate_vblank_count) from
>>> [<c052800c>] (drm_crtc_arm_vblank_event+0x30/0x64)
>>> [   17.849028]  r7:edc2f000 r6:00000001 r5:edc2f000 r4:ed1cca80
>>> [   17.849070] [<c0527fdc>] (drm_crtc_arm_vblank_event) from
>>> [<bf0a89bc>] (ipu_crtc_atomic_begin+0x50/0x80 [imxdrm])
>>> [   17.849086]  r5:ed1cc580 r4:edc2b018
>>> [   17.849131] [<bf0a896c>] (ipu_crtc_atomic_begin [imxdrm]) from
>>> [<c04fa720>] (drm_atomic_helper_commit_planes+0x8c/0x2a8)
>>> [   17.849147]  r5:ed1cc580 r4:00000018
>>> [   17.849174] [<c04fa694>] (drm_atomic_helper_commit_planes) from
>>> [<bf0a81a4>] (imx_drm_atomic_commit_tail+0x30/0x144 [imxdrm])
>>> [   17.849193]  r10:edf56e00 r9:edc2f3e0 r8:edfafdf8 r7:edc2f000
>>> r6:ed1cc580 r5:bf0ab088
>>> [   17.849207]  r4:ed1cc580
>>> [   17.849249] [<bf0a8174>] (imx_drm_atomic_commit_tail [imxdrm]) from
>>> [<c04feb1c>] (commit_tail+0x48/0x8c)
>>> [   17.849271]  r10:edf56e00 r9:edc2f3e0 r8:edfafdf8 r7:edc2f000
>>> r6:00000000 r5:bf0ab088
>>> [   17.849283]  r4:ed1cc580 r3:bf0a8174
>>> [   17.849296] [<c04fead4>] (commit_tail) from [<c04fecb8>]
>>> (drm_atomic_helper_commit+0x140/0x148)
>>> [   17.849301]  r5:00000000 r4:ed1cc580
>>> [   17.849319] [<c04feb78>] (drm_atomic_helper_commit) from
>>> [<c051c138>] (drm_atomic_commit+0x54/0x60)
>>> [   17.849326]  r7:ed1cc580 r6:edc2f000 r5:ed1cc580 r4:00000000
>>> [   17.849339] [<c051c0e4>] (drm_atomic_commit) from [<c0501698>]
>>> (restore_fbdev_mode_atomic+0x19c/0x1f8)
>>> [   17.849346]  r7:ed1cc580 r6:00000001 r5:0000003f r4:000000a0
>>> [   17.849369] [<c05014fc>] (restore_fbdev_mode_atomic) from
>>> [<c05019a4>] (drm_fb_helper_pan_display+0xb0/0x1bc)
>>> [   17.849389]  r10:00000000 r9:c04feb78 r8:edfe3400 r7:edf5781c
>>> r6:00000000 r5:edf56ed0
>>> [   17.849404]  r4:edf56e00
>>> [   17.849443] [<c05018f4>] (drm_fb_helper_pan_display) from
>>> [<c048bc58>] (fb_pan_display+0xd4/0x140)
>>> [   17.849456]  r10:00000000 r9:edf57800 r8:00000438 r7:00000000
>>> r6:00000000 r5:edf5781c
>>> [   17.849461]  r4:edfe3400 r3:00000000
>>> [   17.849488] [<c048bb84>] (fb_pan_display) from [<c049a664>]
>>> (bit_update_start+0x1c/0x38)
>>> [   17.849500]  r10:00000000 r9:edf57800 r8:c17e5e80 r7:c17e5a70
>>> r6:ed686000 r5:edfe3400
>>> [   17.849506]  r4:edf57800 r3:c049a648
>>> [   17.849517] [<c049a648>] (bit_update_start) from [<c049934c>]
>>> (fbcon_switch+0x340/0x558)
>>> [   17.849522]  r5:edfe3400 r4:ed6861c8
>>> [   17.849534] [<c049900c>] (fbcon_switch) from [<c04db61c>]
>>> (redraw_screen+0x150/0x248)
>>> [   17.849543]  r10:00000001 r9:00000000 r8:ee808c00 r7:00000001
>>> r6:c17ebe94 r5:00000001
>>> [   17.849547]  r4:ed686000
>>> [   17.849563] [<c04db4cc>] (redraw_screen) from [<c04d2158>]
>>> (complete_change_console+0x44/0xe0)
>>> [   17.849571]  r8:eef9ed00 r7:00000000 r6:eef9bcc0 r5:00000000 r4:ed686000
>>> [   17.849599] [<c04d2114>] (complete_change_console) from
>>> [<c04d3c44>] (change_console+0x74/0xa0)
>>> [   17.849617]  r7:ee993ef8 r6:eef9bcc0 r5:ee808c00 r4:ed686000
>>> [   17.849645] [<c04d3bd0>] (change_console) from [<c04de00c>]
>>> (console_callback+0xf0/0x150)
>>> [   17.849661]  r5:c102e7ac r4:c17ebe94
>>> [   17.849689] [<c04ddf1c>] (console_callback) from [<c013f1c4>]
>>> (process_one_work+0x258/0x4f0)
>>> [   17.849697]  r5:ee842680 r4:c102e7f8
>>> [   17.849707] [<c013ef6c>] (process_one_work) from [<c01400e8>]
>>> (worker_thread+0x58/0x59c)
>>> [   17.849730]  r10:ee992000 r9:eef9bcf4 r8:c1004900 r7:00000008
>>> r6:ee842698 r5:eef9bcc0
>>> [   17.849743]  r4:ee842680
>>> [   17.849769] [<c0140090>] (worker_thread) from [<c01462c0>]
>>> (kthread+0x140/0x16c)
>>> [   17.849791]  r10:ee87de74 r9:ee855238 r8:ee842680 r7:ee992000
>>> r6:ee963ec0 r5:00000000
>>> [   17.849805]  r4:ee855200
>>> [   17.849828] [<c0146180>] (kthread) from [<c0108c88>]
>>> (ret_from_fork+0x14/0x2c)
>>> [   17.849852]  r10:00000000 r9:00000000 r8:00000000 r7:00000000
>>> r6:00000000 r5:c0146180
>>> [   17.849864]  r4:ee963ec0
>>> [   17.849877] ---[ end trace 3e19c988c4369e26 ]---
>>> [   17.878902] dw_hdmi_connector_get_modes:1917: dwhdmi-imx
>>> 120000.hdmi: failed to get edid
>>> [   17.879975] dw_hdmi_connector_get_modes:1917: dwhdmi-imx
>>> 120000.hdmi: failed to get edid
>>> [   17.919734] dw_hdmi_phy_power_off:1096: dwhdmi-imx 120000.hdmi: PHY
>>> powered down in 0 iterations
>>> [   17.928202] dw_hdmi_setup:1679: dwhdmi-imx 120000.hdmi: Non-CEA
>>> mode used in HDMI
>>> [   17.928222] hdmi_av_composer:1495: dwhdmi-imx 120000.hdmi: final
>>> pixclk = 65000000
>>> [   17.928266] dw_hdmi_phy_power_off:1096: dwhdmi-imx 120000.hdmi: PHY
>>> powered down in 0 iterations
>>> [   17.939476] dw_hdmi_phy_power_on:1133: dwhdmi-imx 120000.hdmi: PHY
>>> PLL locked 1 iterations
>>> [   17.939504] dw_hdmi_phy_power_off:1096: dwhdmi-imx 120000.hdmi: PHY
>>> powered down in 0 iterations
>>> [   17.950712] dw_hdmi_phy_power_on:1133: dwhdmi-imx 120000.hdmi: PHY
>>> PLL locked 1 iterations
>>> [   17.950743] dw_hdmi_setup:1744: dwhdmi-imx 120000.hdmi:
>>> dw_hdmi_setup DVI mode
>>> [   17.951224] ------------[ cut here ]------------
>>> [   17.951269] WARNING: CPU: 0 PID: 782 at
>>> drivers/gpu/drm/drm_vblank.c:303
>>> drm_crtc_accurate_vblank_count+0x80/0x84
>>> [   17.951277] This function requires support for accurate vblank timestamps.
>>> [   17.951285] Modules linked in: dw_hdmi_cec dw_hdmi_ahb_audio
>>> snd_soc_imx_sgtl5000 snd_soc_imx_spdif snd_soc_fsl_asoc_card
>>> snd_ac97_codec coda videobuf2_dma_contig imx_vdoa v4l2_mem2mem
>>> videobuf2_vmalloc videobuf2_memops dw_hdmi_imx imxdrm dw_hdmi cec
>>> etnaviv imx_ipu_v3 binfmt_misc parport_pc ppdev lp parport
>>> [   17.951438] CPU: 0 PID: 782 Comm: Xorg Tainted: G        W
>>> 4.14.0-rc7-gd65d313-dirty #1
>>> [   17.951445] Hardware name: Freescale i.MX6 Quad/DualLite (Device Tree)
>>> [   17.951451] Backtrace:
>>> [   17.951474] [<c010d558>] (dump_backtrace) from [<c010d838>]
>>> (show_stack+0x18/0x1c)
>>> [   17.951485]  r7:c106eed0 r6:00000000 r5:600e0093 r4:c106eed0
>>> [   17.951505] [<c010d820>] (show_stack) from [<c09ff10c>]
>>> (dump_stack+0xac/0xd8)
>>> [   17.951523] [<c09ff060>] (dump_stack) from [<c0122d78>] (__warn+0xec/0x104)
>>> [   17.951535]  r10:000000ab r9:c0527bd8 r8:0000012f r7:00000009
>>> r6:c0d4fc08 r5:00000000
>>> [   17.951543]  r4:ed059c08 r3:00000006
>>> [   17.951556] [<c0122c8c>] (__warn) from [<c0122dd0>]
>>> (warn_slowpath_fmt+0x40/0x48)
>>> [   17.951567]  r9:00000000 r8:00000001 r7:edc2f000 r6:00000000
>>> r5:edc2f000 r4:c0d50064
>>> [   17.951580] [<c0122d94>] (warn_slowpath_fmt) from [<c0527bd8>]
>>> (drm_crtc_accurate_vblank_count+0x80/0x84)
>>> [   17.951588]  r3:00000000 r2:c0d50064
>>> [   17.951595]  r4:edc2f000
>>> [   17.951608] [<c0527b58>] (drm_crtc_accurate_vblank_count) from
>>> [<c052800c>] (drm_crtc_arm_vblank_event+0x30/0x64)
>>> [   17.951618]  r7:edc2f000 r6:00000001 r5:edc2f000 r4:ee34b380
>>> [   17.951649] [<c0527fdc>] (drm_crtc_arm_vblank_event) from
>>> [<bf0a89bc>] (ipu_crtc_atomic_begin+0x50/0x80 [imxdrm])
>>> [   17.951658]  r5:ee34b480 r4:edc2b018
>>> [   17.951685] [<bf0a896c>] (ipu_crtc_atomic_begin [imxdrm]) from
>>> [<c04fa720>] (drm_atomic_helper_commit_planes+0x8c/0x2a8)
>>> [   17.951693]  r5:ee34b480 r4:00000018
>>> [   17.951713] [<c04fa694>] (drm_atomic_helper_commit_planes) from
>>> [<bf0a81a4>] (imx_drm_atomic_commit_tail+0x30/0x144 [imxdrm])
>>> [   17.951726]  r10:000000ab r9:00000000 r8:edc2b018 r7:edc2f000
>>> r6:ee34b480 r5:bf0ab088
>>> [   17.951733]  r4:ee34b480
>>> [   17.951754] [<bf0a8174>] (imx_drm_atomic_commit_tail [imxdrm]) from
>>> [<c04feb1c>] (commit_tail+0x48/0x8c)
>>> [   17.951766]  r10:000000ab r9:00000000 r8:edc2b018 r7:edc2f000
>>> r6:00000000 r5:bf0ab088
>>> [   17.951773]  r4:ee34b480 r3:bf0a8174
>>> [   17.951786] [<c04fead4>] (commit_tail) from [<c04fecb8>]
>>> (drm_atomic_helper_commit+0x140/0x148)
>>> [   17.951794]  r5:00000000 r4:ee34b480
>>> [   17.951810] [<c04feb78>] (drm_atomic_helper_commit) from
>>> [<c051c138>] (drm_atomic_commit+0x54/0x60)
>>> [   17.951820]  r7:00000000 r6:edc2f000 r5:ee34b480 r4:00000000
>>> [   17.951836] [<c051c0e4>] (drm_atomic_commit) from [<c051d2fc>]
>>> (drm_atomic_connector_commit_dpms+0xf0/0x100)
>>> [   17.951846]  r7:00000000 r6:edc2c010 r5:ee34b480 r4:00000001
>>> [   17.951859] [<c051d20c>] (drm_atomic_connector_commit_dpms) from
>>> [<c0522a64>] (drm_mode_obj_set_property_ioctl+0x1b4/0x2ac)
>>> [   17.951871]  r9:ee34b480 r8:00000000 r7:00000000 r6:ed059d78
>>> r5:edc2c024 r4:edd76980
>>> [   17.951884] [<c05228b0>] (drm_mode_obj_set_property_ioctl) from
>>> [<c0521378>] (drm_mode_connector_property_set_ioctl+0x40/0x48)
>>> [   17.951896]  r10:000000ab r9:c01064ab r8:ed059e60 r7:c0521338
>>> r6:edc2f000 r5:00000000
>>> [   17.951903]  r4:00000000
>>> [   17.951919] [<c0521338>] (drm_mode_connector_property_set_ioctl)
>>> from [<c050a7e0>] (drm_ioctl_kernel+0x70/0xb0)
>>> [   17.951927]  r5:ed43b200 r4:0000001a
>>> [   17.951939] [<c050a770>] (drm_ioctl_kernel) from [<c050ac78>]
>>> (drm_ioctl+0x2a4/0x3ac)
>>> [   17.951950]  r9:c01064ab r8:ed43b200 r7:ed059e60 r6:c0b45b9c
>>> r5:00000010 r4:00000010
>>> [   17.951964] [<c050a9d4>] (drm_ioctl) from [<c023eab8>]
>>> (do_vfs_ioctl+0xac/0xa2c)
>>> [   17.951975]  r10:00000000 r9:ed058000 r8:0000000b r7:c023f474
>>> r6:edee9b80 r5:ed759f28
>>> [   17.951982]  r4:bea337d0
>>> [   17.951996] [<c023ea0c>] (do_vfs_ioctl) from [<c023f474>]
>>> (SyS_ioctl+0x3c/0x64)
>>> [   17.952007]  r10:00000000 r9:ed058000 r8:bea337d0 r7:c01064ab
>>> r6:edee9b80 r5:0000000b
>>> [   17.952014]  r4:edee9b80
>>> [   17.952029] [<c023f438>] (SyS_ioctl) from [<c0108be0>]
>>> (ret_fast_syscall+0x0/0x28)
>>> [   17.952041]  r9:ed058000 r8:c0108da4 r7:00000036 r6:c01064ab
>>> r5:bea337d0 r4:00000000
>>> [   17.952048] ---[ end trace 3e19c988c4369e27 ]---
>>> [   19.108300] ------------[ cut here ]------------
>>> [   19.108329] WARNING: CPU: 2 PID: 782 at
>>> drivers/gpu/drm/drm_vblank.c:303
>>> drm_crtc_accurate_vblank_count+0x80/0x84
>>> [   19.108337] This function requires support for accurate vblank timestamps.
>>> [   19.108344] Modules linked in: dw_hdmi_cec dw_hdmi_ahb_audio
>>> snd_soc_imx_sgtl5000 snd_soc_imx_spdif snd_soc_fsl_asoc_card
>>> snd_ac97_codec coda videobuf2_dma_contig imx_vdoa v4l2_mem2mem
>>> videobuf2_vmalloc videobuf2_memops dw_hdmi_imx imxdrm dw_hdmi cec
>>> etnaviv imx_ipu_v3 binfmt_misc parport_pc ppdev lp parport
>>> [   19.108497] CPU: 2 PID: 782 Comm: Xorg Tainted: G        W
>>> 4.14.0-rc7-gd65d313-dirty #1
>>> [   19.108506] Hardware name: Freescale i.MX6 Quad/DualLite (Device Tree)
>>> [   19.108513] Backtrace:
>>> [   19.108533] [<c010d558>] (dump_backtrace) from [<c010d838>]
>>> (show_stack+0x18/0x1c)
>>> [   19.108544]  r7:c106eed0 r6:00000000 r5:60000093 r4:c106eed0
>>> [   19.108562] [<c010d820>] (show_stack) from [<c09ff10c>]
>>> (dump_stack+0xac/0xd8)
>>> [   19.108579] [<c09ff060>] (dump_stack) from [<c0122d78>] (__warn+0xec/0x104)
>>> [   19.108592]  r10:000000ab r9:c0527bd8 r8:0000012f r7:00000009
>>> r6:c0d4fc08 r5:00000000
>>> [   19.108600]  r4:ed059c08 r3:00000006
>>> [   19.108612] [<c0122c8c>] (__warn) from [<c0122dd0>]
>>> (warn_slowpath_fmt+0x40/0x48)
>>> [   19.108624]  r9:00000000 r8:00000001 r7:edc2f000 r6:00000000
>>> r5:edc2f000 r4:c0d50064
>>> [   19.108638] [<c0122d94>] (warn_slowpath_fmt) from [<c0527bd8>]
>>> (drm_crtc_accurate_vblank_count+0x80/0x84)
>>> [   19.108646]  r3:00000000 r2:c0d50064
>>> [   19.108653]  r4:edc2f000
>>> [   19.108665] [<c0527b58>] (drm_crtc_accurate_vblank_count) from
>>> [<c052800c>] (drm_crtc_arm_vblank_event+0x30/0x64)
>>> [   19.108675]  r7:edc2f000 r6:00000001 r5:edc2f000 r4:ed042180
>>> [   19.108709] [<c0527fdc>] (drm_crtc_arm_vblank_event) from
>>> [<bf0a89bc>] (ipu_crtc_atomic_begin+0x50/0x80 [imxdrm])
>>> [   19.108718]  r5:ed042c80 r4:edc2b018
>>> [   19.108742] [<bf0a896c>] (ipu_crtc_atomic_begin [imxdrm]) from
>>> [<c04fa720>] (drm_atomic_helper_commit_planes+0x8c/0x2a8)
>>> [   19.108751]  r5:ed042c80 r4:00000018
>>> [   19.108771] [<c04fa694>] (drm_atomic_helper_commit_planes) from
>>> [<bf0a81a4>] (imx_drm_atomic_commit_tail+0x30/0x144 [imxdrm])
>>> [   19.108783]  r10:000000ab r9:00000000 r8:edc2b018 r7:edc2f000
>>> r6:ed042c80 r5:bf0ab088
>>> [   19.108791]  r4:ed042c80
>>> [   19.108814] [<bf0a8174>] (imx_drm_atomic_commit_tail [imxdrm]) from
>>> [<c04feb1c>] (commit_tail+0x48/0x8c)
>>> [   19.108826]  r10:000000ab r9:00000000 r8:edc2b018 r7:edc2f000
>>> r6:00000000 r5:bf0ab088
>>> [   19.108834]  r4:ed042c80 r3:bf0a8174
>>> [   19.108846] [<c04fead4>] (commit_tail) from [<c04fecb8>]
>>> (drm_atomic_helper_commit+0x140/0x148)
>>> [   19.108854]  r5:00000000 r4:ed042c80
>>> [   19.108871] [<c04feb78>] (drm_atomic_helper_commit) from
>>> [<c051c138>] (drm_atomic_commit+0x54/0x60)
>>> [   19.108881]  r7:00000000 r6:edc2f000 r5:ed042c80 r4:00000000
>>> [   19.108895] [<c051c0e4>] (drm_atomic_commit) from [<c051d2fc>]
>>> (drm_atomic_connector_commit_dpms+0xf0/0x100)
>>> [   19.108904]  r7:00000000 r6:edc2c010 r5:ed042c80 r4:00000001
>>> [   19.108917] [<c051d20c>] (drm_atomic_connector_commit_dpms) from
>>> [<c0522a64>] (drm_mode_obj_set_property_ioctl+0x1b4/0x2ac)
>>> [   19.108928]  r9:ed042c80 r8:00000000 r7:00000000 r6:ed059d78
>>> r5:edc2c024 r4:edd76980
>>> [   19.108942] [<c05228b0>] (drm_mode_obj_set_property_ioctl) from
>>> [<c0521378>] (drm_mode_connector_property_set_ioctl+0x40/0x48)
>>> [   19.108954]  r10:000000ab r9:c01064ab r8:ed059e60 r7:c0521338
>>> r6:edc2f000 r5:00000000
>>> [   19.108961]  r4:00000000
>>> [   19.108976] [<c0521338>] (drm_mode_connector_property_set_ioctl)
>>> from [<c050a7e0>] (drm_ioctl_kernel+0x70/0xb0)
>>> [   19.108985]  r5:ed43b200 r4:0000001a
>>> [   19.108996] [<c050a770>] (drm_ioctl_kernel) from [<c050ac78>]
>>> (drm_ioctl+0x2a4/0x3ac)
>>> [   19.109007]  r9:c01064ab r8:ed43b200 r7:ed059e60 r6:c0b45b9c
>>> r5:00000010 r4:00000010
>>> [   19.109022] [<c050a9d4>] (drm_ioctl) from [<c023eab8>]
>>> (do_vfs_ioctl+0xac/0xa2c)
>>> [   19.109034]  r10:00000000 r9:ed058000 r8:0000000b r7:c023f474
>>> r6:edee9b80 r5:ed759f28
>>> [   19.109041]  r4:bea33bb0
>>> [   19.109052] [<c023ea0c>] (do_vfs_ioctl) from [<c023f474>]
>>> (SyS_ioctl+0x3c/0x64)
>>> [   19.109063]  r10:00000000 r9:ed058000 r8:bea33bb0 r7:c01064ab
>>> r6:edee9b80 r5:0000000b
>>> [   19.109070]  r4:edee9b80
>>> [   19.109085] [<c023f438>] (SyS_ioctl) from [<c0108be0>]
>>> (ret_fast_syscall+0x0/0x28)
>>> [   19.109097]  r9:ed058000 r8:c0108da4 r7:00000036 r6:c01064ab
>>> r5:bea33bb0 r4:00000000
>>> [   19.109104] ---[ end trace 3e19c988c4369e28 ]---
>>>
>>> On Thu, Nov 9, 2017 at 12:12 PM, Jani Nikula
>>> <jani.nikula@xxxxxxxxxxxxxxx> wrote:
>>>> On Thu, 09 Nov 2017, Luís Mendes <luis.p.mendes@xxxxxxxxx> wrote:
>>>>> I've just applied the referred individual patch to kernel-4.14-rc5 and
>>>>> the EDID isn't loaded. dw-hdmi gets no firmware at all.
>>>>
>>>> Sorry, I didn't mean you could just cherry-pick that one commit and make
>>>> it work. There were a number of preparatory patches before that, and I
>>>> think some cleanups on top.
>>>>
>>>> Please try drm-next to make sure you have it all.
>>>>
>>>> We didn't intend for the commits to be backported, instead we very much
>>>> wanted them to get a gradually increasing amount of exposure first to
>>>> make sure we don't break stuff.
>>>>
>>>> And as I said elsewhere in the thread, Russell's patch may be relevant
>>>> for current Linus' master and stable. We just need to reconciliate how
>>>> the two things should work together in drm-next and v4.15 and on.
>>>>
>>>> BR,
>>>> Jani.
>>>>
>>>> --
>>>> Jani Nikula, Intel Open Source Technology Center
>>
>> --
>> Jani Nikula, Intel Open Source Technology Center

-- 
Jani Nikula, Intel Open Source Technology Center
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