Hi Jagan, On 21.01.2022 12:40, Jagan Teki wrote: > On Fri, Jan 21, 2022 at 5:06 PM Marek Szyprowski > <m.szyprowski@xxxxxxxxxxx> wrote: >> On 17.01.2022 09:42, Jagan Teki wrote: >>> Updated series about drm bridge conversion of exynos dsi. >>> >>> Previous version can be accessible, here [1]. >>> >>> Patch 1: connector reset >>> >>> Patch 2: panel_bridge API >>> >>> Patch 3: bridge conversion >>> >>> Patch 4: atomic functions >>> >>> Patch 5: DSI init in pre_enable >>> >>> Apply below patches to test on Exynos DSI: >>> - https://protect2.fireeye.com/v1/url?k=53bdf119-0c26c815-53bc7a56-000babff3563-792dc1a6b54db43e&q=1&e=9a4ea3ad-9e7d-443d-ad21-ce694a7cd352&u=https%3A%2F%2Fpatchwork.amarulasolutions.com%2Fpatch%2F1825%2F >>> - https://protect2.fireeye.com/v1/url?k=cb269ea3-94bda7af-cb2715ec-000babff3563-e6f545b4a32558ba&q=1&e=9a4ea3ad-9e7d-443d-ad21-ce694a7cd352&u=https%3A%2F%2Fpatchwork.amarulasolutions.com%2Fpatch%2F1838%2F >>> >>> [1] https://protect2.fireeye.com/v1/url?k=ee1dae12-b186971e-ee1c255d-000babff3563-83eaf8e86e67e0d9&q=1&e=9a4ea3ad-9e7d-443d-ad21-ce694a7cd352&u=https%3A%2F%2Fpatchwork.amarulasolutions.com%2Fcover%2F1826%2F >>> >>> Any inputs? >> I've tried a few times, but I am unable to find what is the base for >> this patchset. I always get a conflict around exynos_dsi_mode_set() >> function. I've tried current linux-next, drm-next, v5.16-rc1 and v5.16. >> It looks that I must have missed applying some patch before playing with >> this. >> >> I've also tried to apply only the last patch, as if I got it right, it >> is the only difference between v4 and v5 and updated 'drm: of: Lookup if >> child node has panel or bridge'. In such case the board freezes during >> the drm initialization. > Please use drm-misc/drm-misc-next with below patches and then apply this series. I don't have a good news. It doesn't work. The last patch even breaks DSI operation: [ 4.520276] [drm] Exynos DRM: using 13800000.decon device for DMA mapping operations [ 4.520578] exynos-drm exynos-drm: bound 13800000.decon (ops decon_component_ops) [ 4.580473] exynos-drm exynos-drm: bound 13880000.decon (ops decon_component_ops) [ 4.580726] exynos-drm exynos-drm: bound 13930000.mic (ops exynos_mic_component_ops) [ 4.584304] exynos-dsi 13900000.dsi: [drm:exynos_dsi_host_attach] Attached s6e3hf2 device [ 4.585141] exynos-drm exynos-drm: bound 13900000.dsi (ops exynos_dsi_component_ops) [ 4.593189] rc_core: Couldn't load IR keymap rc-cec [ 4.594133] Registered IR keymap rc-empty [ 4.598760] rc rc0: sii8620 as /devices/virtual/rc/rc0 [ 4.605219] input: sii8620 as /devices/virtual/rc/rc0/input1 [ 4.610238] exynos-drm exynos-drm: bound 13970000.hdmi (ops hdmi_component_ops) [ 4.920038] exynos-dsi 13900000.dsi: xfer timed out: 39 03 00 00 f0 5a 5a [ 5.024033] ------------[ cut here ]------------ [ 5.024055] [CRTC:49:crtc-0] vblank wait timed out [ 5.024129] WARNING: CPU: 4 PID: 151 at drivers/gpu/drm/drm_atomic_helper.c:1530 drm_atomic_helper_wait_for_vblanks.part.24+0x298/0x2a8 [ 5.024171] Modules linked in: [ 5.024195] CPU: 4 PID: 151 Comm: kworker/4:7 Not tainted 5.16.0-rc5+ #11232 [ 5.024219] Hardware name: Samsung TM2E board (DT) [ 5.024232] Workqueue: events output_poll_execute [ 5.024262] pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 5.024285] pc : drm_atomic_helper_wait_for_vblanks.part.24+0x298/0x2a8 [ 5.024308] lr : drm_atomic_helper_wait_for_vblanks.part.24+0x298/0x2a8 [ 5.024327] sp : ffff800013b5b970 [ 5.024340] x29: ffff800013b5b970 x28: 0000000000000000 x27: ffff00002437e400 [ 5.024391] x26: 0000000000000000 x25: 0000000000000000 x24: ffff800011aa0c60 [ 5.024437] x23: 0000000000000001 x22: ffff000025113000 x21: 0000000000000001 [ 5.024482] x20: ffff0000316fc800 x19: 0000000000000000 x18: ffffffffffffffff [ 5.024526] x17: 0048000000000a11 x16: 0000000000000028 x15: ffff800011b66df8 [ 5.024571] x14: 0000000000000000 x13: 0a74756f2064656d x12: 6974207469617720 [ 5.024615] x11: 656820747563205b x10: 000000000000003a x9 : 000000007e82f035 [ 5.024661] x8 : ffff800011b66df8 x7 : ffff800013b5b740 x6 : 0000000000000001 [ 5.024704] x5 : 0000000000000001 x4 : 0000000000000000 x3 : 0000000000000007 [ 5.024747] x2 : ffff800012524ea0 x1 : 68a66f6a76622200 x0 : 0000000000000000 [ 5.024791] Call trace: [ 5.024802] drm_atomic_helper_wait_for_vblanks.part.24+0x298/0x2a8 [ 5.024825] drm_atomic_helper_commit_tail_rpm+0x60/0x78 [ 5.024845] commit_tail+0x9c/0x170 [ 5.024864] drm_atomic_helper_commit+0x188/0x3a0 [ 5.024884] drm_atomic_commit+0x54/0x68 [ 5.024906] drm_client_modeset_commit_atomic+0x260/0x288 [ 5.024927] drm_client_modeset_commit_locked+0x54/0x1c0 [ 5.024945] drm_client_modeset_commit+0x2c/0x50 [ 5.024962] __drm_fb_helper_restore_fbdev_mode_unlocked+0x88/0xf8 [ 5.024983] drm_fb_helper_set_par+0x38/0x70 [ 5.025000] drm_fb_helper_hotplug_event.part.29+0xb0/0xe0 [ 5.025018] drm_fb_helper_output_poll_changed+0x30/0x40 [ 5.025035] drm_kms_helper_hotplug_event+0x28/0x40 [ 5.025053] output_poll_execute+0xc4/0x1f0 [ 5.025071] process_one_work+0x29c/0x6e8 [ 5.025090] worker_thread+0x48/0x460 [ 5.025106] kthread+0x154/0x188 [ 5.025128] ret_from_fork+0x10/0x20 [ 5.025148] irq event stamp: 878 [ 5.025160] hardirqs last enabled at (877): [<ffff80001010e9fc>] vprintk_emit+0x2bc/0x2f8 [ 5.025188] hardirqs last disabled at (878): [<ffff80001100fccc>] el1_dbg+0x24/0x88 [ 5.025214] softirqs last enabled at (206): [<ffff800010010488>] _stext+0x488/0x5cc [ 5.025233] softirqs last disabled at (201): [<ffff800010095718>] irq_exit_rcu+0x168/0x1a8 [ 5.025256] ---[ end trace 458e29685f12760b ]--- [ 15.240069] exynos-drm exynos-drm: [drm] *ERROR* flip_done timed out [ 15.240131] exynos-drm exynos-drm: [drm] *ERROR* [CRTC:49:crtc-0] commit wait timed out [ 25.480001] exynos-drm exynos-drm: [drm] *ERROR* flip_done timed out [ 25.480031] exynos-drm exynos-drm: [drm] *ERROR* [CONNECTOR:68:DSI-1] commit wait timed out [ 35.720001] exynos-drm exynos-drm: [drm] *ERROR* flip_done timed out [ 35.720031] exynos-drm exynos-drm: [drm] *ERROR* [PLANE:37:plane-2] commit wait timed out [ 35.824013] ------------[ cut here ]------------ [ 35.824037] [CRTC:49:crtc-0] vblank wait timed out [ 35.824116] WARNING: CPU: 7 PID: 74 at drivers/gpu/drm/drm_atomic_helper.c:1530 drm_atomic_helper_wait_for_vblanks.part.24+0x298/0x2a8 [ 35.824155] Modules linked in: [ 35.824180] CPU: 7 PID: 74 Comm: kworker/u16:1 Tainted: G W 5.16.0-rc5+ #11232 [ 35.824205] Hardware name: Samsung TM2E board (DT) [ 35.824221] Workqueue: events_unbound deferred_probe_work_func [ 35.824255] pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 35.824281] pc : drm_atomic_helper_wait_for_vblanks.part.24+0x298/0x2a8 [ 35.824304] lr : drm_atomic_helper_wait_for_vblanks.part.24+0x298/0x2a8 [ 35.824325] sp : ffff80001386b380 [ 35.824339] x29: ffff80001386b380 x28: 0000000000000000 x27: ffff000023c91c00 [ 35.824395] x26: 0000000000000000 x25: 0000000000000000 x24: ffff800011aa0c60 [ 35.824446] x23: 0000000000000001 x22: ffff000025113000 x21: 0000000000000001 [ 35.824495] x20: ffff0000316fc800 x19: 0000000000000000 x18: ffffffffffffffff [ 35.824544] x17: 0048000000000a11 x16: 0000000000000028 x15: ffff800011b66df8 [ 35.824594] x14: 0000000000000000 x13: 0a74756f2064656d x12: 6974207469617720 [ 35.824643] x11: 656820747563205b x10: 000000000000003a x9 : 0000000088c3aa19 [ 35.824693] x8 : ffff800011b66df8 x7 : ffff80001386b150 x6 : 0000000000000001 [ 35.824741] x5 : 0000000000000001 x4 : 0000000000000000 x3 : 000000000000000c [ 35.824788] x2 : ffff800012524ea0 x1 : 68a66f6a76622200 x0 : 0000000000000000 [ 35.824838] Call trace: [ 35.824851] drm_atomic_helper_wait_for_vblanks.part.24+0x298/0x2a8 [ 35.824875] drm_atomic_helper_commit_tail_rpm+0x60/0x78 [ 35.824898] commit_tail+0x9c/0x170 [ 35.824918] drm_atomic_helper_commit+0x188/0x3a0 [ 35.824939] drm_atomic_commit+0x54/0x68 [ 35.824962] drm_client_modeset_commit_atomic+0x260/0x288 [ 35.824983] drm_client_modeset_commit_locked+0x54/0x1c0 [ 35.825003] drm_client_modeset_commit+0x2c/0x50 [ 35.825023] __drm_fb_helper_restore_fbdev_mode_unlocked+0x88/0xf8 [ 35.825043] drm_fb_helper_set_par+0x38/0x70 [ 35.825062] fbcon_init+0x440/0x4e0 [ 35.825085] visual_init+0xb0/0x108 [ 35.825107] do_bind_con_driver+0x1cc/0x3c0 [ 35.825127] do_take_over_console+0x148/0x1d8 [ 35.825148] do_fbcon_takeover+0x70/0xe8 [ 35.825170] fbcon_fb_registered+0x13c/0x150 [ 35.825192] register_framebuffer+0x1c4/0x340 [ 35.825211] __drm_fb_helper_initial_config_and_unlock+0x360/0x548 [ 35.825239] drm_fb_helper_initial_config+0x44/0x50 [ 35.825257] exynos_drm_fbdev_init+0x90/0x100 [ 35.825282] exynos_drm_bind+0x164/0x1a8 [ 35.825303] try_to_bring_up_master+0x15c/0x1c8 [ 35.825326] __component_add+0xa8/0x170 [ 35.825348] component_add+0x10/0x18 [ 35.825370] hdmi_probe+0x43c/0x6d0 [ 35.825389] platform_probe+0x90/0xd8 [ 35.825412] really_probe+0xb4/0x2e0 [ 35.825432] __driver_probe_device+0x78/0xd8 [ 35.825452] driver_probe_device+0x40/0x110 [ 35.825473] __device_attach_driver+0x9c/0xd8 [ 35.825494] bus_for_each_drv+0x70/0xc8 [ 35.825513] __device_attach+0xec/0x150 [ 35.825533] device_initial_probe+0x10/0x18 [ 35.825556] bus_probe_device+0x94/0xa0 [ 35.825575] deferred_probe_work_func+0x84/0xc0 [ 35.825595] process_one_work+0x29c/0x6e8 [ 35.825614] worker_thread+0x21c/0x460 [ 35.825631] kthread+0x154/0x188 [ 35.825653] ret_from_fork+0x10/0x20 [ 35.825673] irq event stamp: 162880 [ 35.825687] hardirqs last enabled at (162879): [<ffff80001010e9fc>] vprintk_emit+0x2bc/0x2f8 [ 35.825716] hardirqs last disabled at (162880): [<ffff80001100fccc>] el1_dbg+0x24/0x88 [ 35.825742] softirqs last enabled at (162726): [<ffff800010010488>] _stext+0x488/0x5cc [ 35.825763] softirqs last disabled at (162721): [<ffff800010095718>] irq_exit_rcu+0x168/0x1a8 [ 35.825787] ---[ end trace 458e29685f12760c ]--- [ 45.960007] exynos-drm exynos-drm: [drm] *ERROR* flip_done timed out [ 45.960039] exynos-drm exynos-drm: [drm] *ERROR* [CRTC:49:crtc-0] commit wait timed out [ 56.200000] exynos-drm exynos-drm: [drm] *ERROR* flip_done timed out [ 56.200030] exynos-drm exynos-drm: [drm] *ERROR* [CONNECTOR:68:DSI-1] commit wait timed out [ 66.440000] exynos-drm exynos-drm: [drm] *ERROR* flip_done timed out [ 66.440030] exynos-drm exynos-drm: [drm] *ERROR* [PLANE:37:plane-2] commit wait timed out [ 66.544003] ------------[ cut here ]------------ [ 66.544027] [CRTC:49:crtc-0] vblank wait timed out [ 66.544102] WARNING: CPU: 7 PID: 74 at drivers/gpu/drm/drm_atomic_helper.c:1530 drm_atomic_helper_wait_for_vblanks.part.24+0x298/0x2a8 [ 66.544138] Modules linked in: [ 66.544162] CPU: 7 PID: 74 Comm: kworker/u16:1 Tainted: G W 5.16.0-rc5+ #11232 [ 66.544186] Hardware name: Samsung TM2E board (DT) [ 66.544200] Workqueue: events_unbound deferred_probe_work_func [ 66.544233] pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 66.544255] pc : drm_atomic_helper_wait_for_vblanks.part.24+0x298/0x2a8 [ 66.544277] lr : drm_atomic_helper_wait_for_vblanks.part.24+0x298/0x2a8 [ 66.544297] sp : ffff80001386b160 [ 66.544310] x29: ffff80001386b160 x28: 0000000000000000 x27: ffff000023d83500 [ 66.544363] x26: 0000000000000000 x25: 0000000000000000 x24: ffff800011aa0c60 [ 66.544412] x23: 0000000000000001 x22: ffff000025113000 x21: 0000000000000001 [ 66.544461] x20: ffff0000316fc800 x19: 0000000000000000 x18: ffffffffffffffff [ 66.544509] x17: 0048000000000a11 x16: 0a020a010a110a00 x15: ffff800011b66df8 [ 66.544558] x14: 0000000000000000 x13: 0a74756f2064656d x12: 6974207469617720 [ 66.544606] x11: 656820747563205b x10: 000000000000003a x9 : 0000000088c3aa19 [ 66.544655] x8 : ffff800011b66df8 x7 : ffff80001386af30 x6 : 0000000000000001 [ 66.544702] x5 : 0000000000000001 x4 : 0000000000000000 x3 : 000000000000000c [ 66.544749] x2 : ffff800012524ea0 x1 : 68a66f6a76622200 x0 : 0000000000000000 [ 66.544796] Call trace: [ 66.544808] drm_atomic_helper_wait_for_vblanks.part.24+0x298/0x2a8 [ 66.544830] drm_atomic_helper_commit_tail_rpm+0x60/0x78 [ 66.544852] commit_tail+0x9c/0x170 [ 66.544871] drm_atomic_helper_commit+0x188/0x3a0 [ 66.544892] drm_atomic_commit+0x54/0x68 [ 66.544915] drm_client_modeset_commit_atomic+0x260/0x288 [ 66.544935] drm_client_modeset_commit_locked+0x54/0x1c0 [ 66.544954] drm_fb_helper_pan_display+0xb0/0x1c0 [ 66.544973] fb_pan_display+0xb8/0x158 [ 66.544990] bit_update_start+0x1c/0x40 [ 66.545013] fbcon_switch+0x308/0x458 [ 66.545034] redraw_screen+0x158/0x238 [ 66.545056] fbcon_prepare_logo+0x3cc/0x440 [ 66.545077] fbcon_init+0x380/0x4e0 [ 66.545098] visual_init+0xb0/0x108 [ 66.545118] do_bind_con_driver+0x1cc/0x3c0 [ 66.545137] do_take_over_console+0x148/0x1d8 [ 66.545158] do_fbcon_takeover+0x70/0xe8 [ 66.545178] fbcon_fb_registered+0x13c/0x150 [ 66.545199] register_framebuffer+0x1c4/0x340 [ 66.545217] __drm_fb_helper_initial_config_and_unlock+0x360/0x548 [ 66.545244] drm_fb_helper_initial_config+0x44/0x50 [ 66.545263] exynos_drm_fbdev_init+0x90/0x100 [ 66.545286] exynos_drm_bind+0x164/0x1a8 [ 66.545306] try_to_bring_up_master+0x15c/0x1c8 [ 66.545329] __component_add+0xa8/0x170 [ 66.545350] component_add+0x10/0x18 [ 66.545371] hdmi_probe+0x43c/0x6d0 [ 66.545389] platform_probe+0x90/0xd8 [ 66.545411] really_probe+0xb4/0x2e0 [ 66.545431] __driver_probe_device+0x78/0xd8 [ 66.545452] driver_probe_device+0x40/0x110 [ 66.545472] __device_attach_driver+0x9c/0xd8 [ 66.545493] bus_for_each_drv+0x70/0xc8 [ 66.545513] __device_attach+0xec/0x150 [ 66.545532] device_initial_probe+0x10/0x18 [ 66.545553] bus_probe_device+0x94/0xa0 [ 66.545573] deferred_probe_work_func+0x84/0xc0 [ 66.545592] process_one_work+0x29c/0x6e8 [ 66.545612] worker_thread+0x21c/0x460 [ 66.545628] kthread+0x154/0x188 [ 66.545651] ret_from_fork+0x10/0x20 [ 66.545671] irq event stamp: 163148 [ 66.545684] hardirqs last enabled at (163147): [<ffff80001010e9fc>] vprintk_emit+0x2bc/0x2f8 [ 66.545712] hardirqs last disabled at (163148): [<ffff80001100fccc>] el1_dbg+0x24/0x88 [ 66.545735] softirqs last enabled at (162726): [<ffff800010010488>] _stext+0x488/0x5cc [ 66.545754] softirqs last disabled at (162721): [<ffff800010095718>] irq_exit_rcu+0x168/0x1a8 [ 66.545778] ---[ end trace 458e29685f12760d ]--- [ 66.589975] Console: switching to colour frame buffer device 200x160 [ 76.680050] exynos-drm exynos-drm: [drm] *ERROR* flip_done timed out [ 76.680082] exynos-drm exynos-drm: [drm] *ERROR* [CRTC:49:crtc-0] commit wait timed out [ 86.920001] exynos-drm exynos-drm: [drm] *ERROR* flip_done timed out [ 86.920030] exynos-drm exynos-drm: [drm] *ERROR* [CONNECTOR:68:DSI-1] commit wait timed out [ 97.160001] exynos-drm exynos-drm: [drm] *ERROR* flip_done timed out [ 97.160029] exynos-drm exynos-drm: [drm] *ERROR* [PLANE:37:plane-2] commit wait timed out [ 97.264005] ------------[ cut here ]------------ [ 97.264029] [CRTC:49:crtc-0] vblank wait timed out [ 97.264103] WARNING: CPU: 7 PID: 74 at drivers/gpu/drm/drm_atomic_helper.c:1530 drm_atomic_helper_wait_for_vblanks.part.24+0x298/0x2a8 [ 97.264139] Modules linked in: [ 97.264162] CPU: 7 PID: 74 Comm: kworker/u16:1 Tainted: G W 5.16.0-rc5+ #11232 [ 97.264185] Hardware name: Samsung TM2E board (DT) [ 97.264199] Workqueue: events_unbound deferred_probe_work_func [ 97.264231] pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 97.264254] pc : drm_atomic_helper_wait_for_vblanks.part.24+0x298/0x2a8 [ 97.264277] lr : drm_atomic_helper_wait_for_vblanks.part.24+0x298/0x2a8 [ 97.264298] sp : ffff80001386b290 [ 97.264310] x29: ffff80001386b290 x28: 0000000000000000 x27: ffff0000250a6a00 [ 97.264361] x26: 0000000000000000 x25: 0000000000000000 x24: ffff800011aa0c60 [ 97.264409] x23: 0000000000000001 x22: ffff000025113000 x21: 0000000000000001 [ 97.264457] x20: ffff0000316fc800 x19: 0000000000000000 x18: ffffffffffffffff [ 97.264505] x17: 0048000000000a11 x16: 0a020a010a110a00 x15: ffff800011b66df8 [ 97.264554] x14: 0000000000000000 x13: 0a74756f2064656d x12: 6974207469617720 [ 97.264603] x11: 656820747563205b x10: 000000000000003a x9 : 0000000088c3aa19 [ 97.264652] x8 : ffff800011b66df8 x7 : ffff80001386b060 x6 : 0000000000000001 [ 97.264699] x5 : 0000000000000001 x4 : 0000000000000000 x3 : 000000000000000c [ 97.264746] x2 : ffff800012524ea0 x1 : 68a66f6a76622200 x0 : 0000000000000000 [ 97.264794] Call trace: [ 97.264806] drm_atomic_helper_wait_for_vblanks.part.24+0x298/0x2a8 [ 97.264829] drm_atomic_helper_commit_tail_rpm+0x60/0x78 [ 97.264852] commit_tail+0x9c/0x170 [ 97.264872] drm_atomic_helper_commit+0x188/0x3a0 [ 97.264892] drm_atomic_commit+0x54/0x68 [ 97.264915] drm_client_modeset_commit_atomic+0x260/0x288 [ 97.264936] drm_client_modeset_commit_locked+0x54/0x1c0 [ 97.264955] drm_fb_helper_pan_display+0xb0/0x1c0 [ 97.264974] fb_pan_display+0xb8/0x158 [ 97.264991] bit_update_start+0x1c/0x40 [ 97.265014] fbcon_switch+0x308/0x458 [ 97.265034] redraw_screen+0x158/0x238 [ 97.265056] do_bind_con_driver+0x2d0/0x3c0 [ 97.265075] do_take_over_console+0x148/0x1d8 [ 97.265096] do_fbcon_takeover+0x70/0xe8 [ 97.265117] fbcon_fb_registered+0x13c/0x150 [ 97.265138] register_framebuffer+0x1c4/0x340 [ 97.265156] __drm_fb_helper_initial_config_and_unlock+0x360/0x548 [ 97.265183] drm_fb_helper_initial_config+0x44/0x50 [ 97.265202] exynos_drm_fbdev_init+0x90/0x100 [ 97.265225] exynos_drm_bind+0x164/0x1a8 [ 97.265246] try_to_bring_up_master+0x15c/0x1c8 [ 97.265268] __component_add+0xa8/0x170 [ 97.265289] component_add+0x10/0x18 [ 97.265310] hdmi_probe+0x43c/0x6d0 [ 97.265327] platform_probe+0x90/0xd8 [ 97.265349] really_probe+0xb4/0x2e0 [ 97.265368] __driver_probe_device+0x78/0xd8 [ 97.265388] driver_probe_device+0x40/0x110 [ 97.265408] __device_attach_driver+0x9c/0xd8 [ 97.265428] bus_for_each_drv+0x70/0xc8 [ 97.265446] __device_attach+0xec/0x150 [ 97.265465] device_initial_probe+0x10/0x18 [ 97.265485] bus_probe_device+0x94/0xa0 [ 97.265505] deferred_probe_work_func+0x84/0xc0 [ 97.265524] process_one_work+0x29c/0x6e8 [ 97.265543] worker_thread+0x21c/0x460 [ 97.265559] kthread+0x154/0x188 [ 97.265580] ret_from_fork+0x10/0x20 [ 97.265601] irq event stamp: 163438 [ 97.265613] hardirqs last enabled at (163437): [<ffff80001010e9fc>] vprintk_emit+0x2bc/0x2f8 [ 97.265641] hardirqs last disabled at (163438): [<ffff80001100fccc>] el1_dbg+0x24/0x88 [ 97.265664] softirqs last enabled at (163174): [<ffff800010010488>] _stext+0x488/0x5cc [ 97.265684] softirqs last disabled at (163169): [<ffff800010095718>] irq_exit_rcu+0x168/0x1a8 [ 97.265706] ---[ end trace 458e29685f12760e ]--- [ 98.742702] exynos-drm exynos-drm: [drm] fb0: exynos frame buffer device [ 98.752101] [drm] Initialized exynos 1.1.0 20180330 for exynos-drm on minor 0 Best regards -- Marek Szyprowski, PhD Samsung R&D Institute Poland
