Hi Jagan, On 14.12.2021 11:47, Jagan Teki wrote: > On Mon, Dec 13, 2021 at 7:42 PM Marek Szyprowski > <m.szyprowski@xxxxxxxxxxx> wrote: >> On 13.12.2021 14:56, Jagan Teki wrote: >>> On Mon, Dec 13, 2021 at 6:51 PM Marek Szyprowski >>> <m.szyprowski@xxxxxxxxxxx> wrote: >>>> On 13.12.2021 13:31, Jagan Teki wrote: >>>>> On Mon, Dec 13, 2021 at 5:42 PM Marek Szyprowski >>>>> <m.szyprowski@xxxxxxxxxxx> wrote: >>>>>> On 13.12.2021 13:08, Jagan Teki wrote: >>>>>>> On Mon, Dec 13, 2021 at 5:34 PM Marek Szyprowski >>>>>>> <m.szyprowski@xxxxxxxxxxx> wrote: >>>>>>>> On 12.12.2021 19:14, Jagan Teki wrote: >>>>>>>>> Updated series about drm bridge conversion of exynos dsi. >>>>>>>>> >>>>>>>>> Patch 1: panel checker >>>>>>>>> >>>>>>>>> Patch 2: panel_bridge API >>>>>>>>> >>>>>>>>> Patch 3: Bridge conversion >>>>>>>>> >>>>>>>>> Patch 4: pree_enable, post_disable >>>>>>>>> >>>>>>>>> Patch 5: Atomic functions >>>>>>>>> >>>>>>>>> Patch 6: atomic_set >>>>>>>>> >>>>>>>>> Patch 7: DSI init in enable >>>>>>>>> >>>>>>>>> [1] https://patchwork.kernel.org/project/dri-devel/cover/20211210191922.2367979-1-jagan@xxxxxxxxxxxxxxxxxxxx/ >>>>>>>>> >>>>>>>>> Any inputs? >>>>>>>> I've checked this patchset on Exynos based Trats2 board (the one with >>>>>>>> simplest display pipeline: Exynos FIMD -> Exynos DSI -> s6e8aa0 DSI >>>>>>>> panel). DRM stops working after the 2nd patch ("[PATCH v3 2/7] drm: >>>>>>>> exynos: dsi: Use drm panel_bridge API"): >>>>>>>> >>>>>>>> > [...] >>> Thanks for testing it. >>> >>> Can you test it on the downstream bridge, tc358764 and post the result? >> There were 2 logs in my reply. One from trats2 board (just dsi panel) >> and one from arndale (tc bridge + simple panel). > Okay. Got it. > > Can you test this tc358764 panel_bridge patch on linux-next? don't > apply this series, apply only below patch and test. > Yes, sure. Sadly, it also breaks display operation: OF: graph: no port node found in /soc/hdmi@14530000 [drm] Exynos DRM: using 14400000.fimd device for DMA mapping operations exynos-drm exynos-drm: bound 14400000.fimd (ops fimd_component_ops) exynos-drm exynos-drm: bound 14450000.mixer (ops mixer_component_ops) OF: graph: no port node found in /soc/dsi@14500000 exynos-drm exynos-drm: bound 14500000.dsi (ops exynos_dsi_component_ops) exynos-drm exynos-drm: bound 14530000.hdmi (ops hdmi_component_ops) exynos-drm exynos-drm: [drm] Cannot find any crtc or sizes exynos-drm exynos-drm: [drm] Cannot find any crtc or sizes [drm] Initialized exynos 1.1.0 20180330 for exynos-drm on minor 0 panfrost 11800000.gpu: clock rate = 533000000 panfrost 11800000.gpu: mali-t600 id 0x600 major 0x0 minor 0x0 status 0x1 panfrost 11800000.gpu: features: 00000000,10206000, issues: 00000000,31b4dfff panfrost 11800000.gpu: Features: L2:0x07110206 Shader:0x00000000 Tiler:0x00000809 Mem:0x1 MMU:0x00002830 AS:0xf JS:0x7 panfrost 11800000.gpu: shader_present=0xf l2_present=0x1 [drm] Initialized panfrost 1.2.0 20180908 for 11800000.gpu on minor 1 ------------[ cut here ]------------ WARNING: CPU: 1 PID: 23 at drivers/gpu/drm/drm_atomic_state_helper.c:494 drm_atomic_helper_connector_duplicate_state+0x60/0x68 Modules linked in: CPU: 1 PID: 23 Comm: kworker/1:1 Not tainted 5.16.0-rc5-next-20211213-00001-gac4117943791 #11072 Hardware name: Samsung Exynos (Flattened Device Tree) Workqueue: events output_poll_execute [<c01110d0>] (unwind_backtrace) from [<c010cab0>] (show_stack+0x10/0x14) [<c010cab0>] (show_stack) from [<c0b71b58>] (dump_stack_lvl+0x58/0x70) [<c0b71b58>] (dump_stack_lvl) from [<c0126c9c>] (__warn+0x228/0x22c) [<c0126c9c>] (__warn) from [<c0126d4c>] (warn_slowpath_fmt+0xac/0xb4) [<c0126d4c>] (warn_slowpath_fmt) from [<c064e844>] (drm_atomic_helper_connector_duplicate_state+0x60/0x68) [<c064e844>] (drm_atomic_helper_connector_duplicate_state) from [<c06685f4>] (drm_atomic_get_connector_state+0xd8/0x190) [<c06685f4>] (drm_atomic_get_connector_state) from [<c066960c>] (__drm_atomic_helper_set_config+0x2a0/0x368) [<c066960c>] (__drm_atomic_helper_set_config) from [<c0680a20>] (drm_client_modeset_commit_atomic+0x178/0x27c) [<c0680a20>] (drm_client_modeset_commit_atomic) from [<c0680be0>] (drm_client_modeset_commit_locked+0x48/0x1d0) [<c0680be0>] (drm_client_modeset_commit_locked) from [<c0680d8c>] (drm_client_modeset_commit+0x24/0x40) [<c0680d8c>] (drm_client_modeset_commit) from [<c0652a94>] (__drm_fb_helper_restore_fbdev_mode_unlocked+0x64/0xc8) [<c0652a94>] (__drm_fb_helper_restore_fbdev_mode_unlocked) from [<c0652b60>] (drm_fb_helper_set_par+0x38/0x64) [<c0652b60>] (drm_fb_helper_set_par) from [<c0652c34>] (drm_fb_helper_hotplug_event.part.5+0xa8/0xc0) [<c0652c34>] (drm_fb_helper_hotplug_event.part.5) from [<c063dfbc>] (drm_kms_helper_hotplug_event+0x24/0x30) [<c063dfbc>] (drm_kms_helper_hotplug_event) from [<c063e210>] (output_poll_execute+0x1ec/0x204) [<c063e210>] (output_poll_execute) from [<c0148990>] (process_one_work+0x2c8/0x7ec) [<c0148990>] (process_one_work) from [<c0148f04>] (worker_thread+0x50/0x584) [<c0148f04>] (worker_thread) from [<c0151300>] (kthread+0x13c/0x19c) [<c0151300>] (kthread) from [<c0100108>] (ret_from_fork+0x14/0x2c) Exception stack(0xc1d35fb0 to 0xc1d35ff8) 5fa0: 00000000 00000000 00000000 00000000 5fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 5fe0: 00000000 00000000 00000000 00000000 00000013 00000000 irq event stamp: 1287 hardirqs last enabled at (1293): [<c01a3b94>] vprintk_emit+0x270/0x2b4 hardirqs last disabled at (1298): [<c01a3b50>] vprintk_emit+0x22c/0x2b4 softirqs last enabled at (1260): [<c01016fc>] __do_softirq+0x4cc/0x5ec softirqs last disabled at (1255): [<c01301c8>] irq_exit+0x1cc/0x200 ---[ end trace 0fa33551718d667f ]--- ------------[ cut here ]------------ WARNING: CPU: 0 PID: 7 at drivers/gpu/drm/drm_atomic_state_helper.c:494 drm_atomic_helper_connector_duplicate_state+0x60/0x68 Modules linked in: CPU: 0 PID: 7 Comm: kworker/u4:0 Tainted: G W 5.16.0-rc5-next-20211213-00001-gac4117943791 #11072 Hardware name: Samsung Exynos (Flattened Device Tree) Workqueue: events_unbound deferred_probe_work_func [<c01110d0>] (unwind_backtrace) from [<c010cab0>] (show_stack+0x10/0x14) [<c010cab0>] (show_stack) from [<c0b71b58>] (dump_stack_lvl+0x58/0x70) [<c0b71b58>] (dump_stack_lvl) from [<c0126c9c>] (__warn+0x228/0x22c) [<c0126c9c>] (__warn) from [<c0126d4c>] (warn_slowpath_fmt+0xac/0xb4) [<c0126d4c>] (warn_slowpath_fmt) from [<c064e844>] (drm_atomic_helper_connector_duplicate_state+0x60/0x68) [<c064e844>] (drm_atomic_helper_connector_duplicate_state) from [<c06685f4>] (drm_atomic_get_connector_state+0xd8/0x190) [<c06685f4>] (drm_atomic_get_connector_state) from [<c066960c>] (__drm_atomic_helper_set_config+0x2a0/0x368) [<c066960c>] (__drm_atomic_helper_set_config) from [<c0680a20>] (drm_client_modeset_commit_atomic+0x178/0x27c) [<c0680a20>] (drm_client_modeset_commit_atomic) from [<c0680be0>] (drm_client_modeset_commit_locked+0x48/0x1d0) [<c0680be0>] (drm_client_modeset_commit_locked) from [<c0680d8c>] (drm_client_modeset_commit+0x24/0x40) [<c0680d8c>] (drm_client_modeset_commit) from [<c0652a94>] (__drm_fb_helper_restore_fbdev_mode_unlocked+0x64/0xc8) [<c0652a94>] (__drm_fb_helper_restore_fbdev_mode_unlocked) from [<c0652b60>] (drm_fb_helper_set_par+0x38/0x64) [<c0652b60>] (drm_fb_helper_set_par) from [<c05bbf28>] (fbcon_init+0x48c/0x510) [<c05bbf28>] (fbcon_init) from [<c0608b50>] (visual_init+0xc0/0x108) [<c0608b50>] (visual_init) from [<c0609d78>] (do_bind_con_driver+0x1ac/0x388) [<c0609d78>] (do_bind_con_driver) from [<c060a2b0>] (do_take_over_console+0x13c/0x1c8) [<c060a2b0>] (do_take_over_console) from [<c05b90e0>] (do_fbcon_takeover+0x74/0xcc) [<c05b90e0>] (do_fbcon_takeover) from [<c05b38f0>] (register_framebuffer+0x1c8/0x2d8) [<c05b38f0>] (register_framebuffer) from [<c06524a4>] (__drm_fb_helper_initial_config_and_unlock+0x440/0x65c) [<c06524a4>] (__drm_fb_helper_initial_config_and_unlock) from [<c063dfbc>] (drm_kms_helper_hotplug_event+0x24/0x30) [<c063dfbc>] (drm_kms_helper_hotplug_event) from [<c0690fb8>] (exynos_dsi_host_attach+0x170/0x2a4) [<c0690fb8>] (exynos_dsi_host_attach) from [<c069d064>] (tc358764_probe+0xe8/0x160) [<c069d064>] (tc358764_probe) from [<c06b6fb0>] (really_probe+0x190/0x450) [<c06b6fb0>] (really_probe) from [<c06b7314>] (__driver_probe_device+0xa4/0x204) [<c06b7314>] (__driver_probe_device) from [<c06b74a8>] (driver_probe_device+0x34/0xd4) [<c06b74a8>] (driver_probe_device) from [<c06b7884>] (__device_attach_driver+0xb0/0x11c) [<c06b7884>] (__device_attach_driver) from [<c06b5094>] (bus_for_each_drv+0x70/0xb4) [<c06b5094>] (bus_for_each_drv) from [<c06b6d80>] (__device_attach+0xe0/0x178) [<c06b6d80>] (__device_attach) from [<c06b5e0c>] (bus_probe_device+0x88/0x90) [<c06b5e0c>] (bus_probe_device) from [<c06b632c>] (deferred_probe_work_func+0x4c/0xe8) [<c06b632c>] (deferred_probe_work_func) from [<c0148990>] (process_one_work+0x2c8/0x7ec) [<c0148990>] (process_one_work) from [<c0148f04>] (worker_thread+0x50/0x584) [<c0148f04>] (worker_thread) from [<c0151300>] (kthread+0x13c/0x19c) [<c0151300>] (kthread) from [<c0100108>] (ret_from_fork+0x14/0x2c) Exception stack(0xc1cc1fb0 to 0xc1cc1ff8) 1fa0: 00000000 00000000 00000000 00000000 1fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 1fe0: 00000000 00000000 00000000 00000000 00000013 00000000 irq event stamp: 24321 hardirqs last enabled at (24327): [<c01a3b94>] vprintk_emit+0x270/0x2b4 hardirqs last disabled at (24332): [<c01a3b50>] vprintk_emit+0x22c/0x2b4 softirqs last enabled at (21880): [<c01016fc>] __do_softirq+0x4cc/0x5ec softirqs last disabled at (21875): [<c01301c8>] irq_exit+0x1cc/0x200 ---[ end trace 0fa33551718d6680 ]--- ------------[ cut here ]------------ WARNING: CPU: 0 PID: 7 at drivers/gpu/drm/drm_atomic_state_helper.c:494 drm_atomic_helper_connector_duplicate_state+0x60/0x68 Modules linked in: CPU: 0 PID: 7 Comm: kworker/u4:0 Tainted: G W 5.16.0-rc5-next-20211213-00001-gac4117943791 #11072 Hardware name: Samsung Exynos (Flattened Device Tree) Workqueue: events_unbound deferred_probe_work_func [<c01110d0>] (unwind_backtrace) from [<c010cab0>] (show_stack+0x10/0x14) [<c010cab0>] (show_stack) from [<c0b71b58>] (dump_stack_lvl+0x58/0x70) [<c0b71b58>] (dump_stack_lvl) from [<c0126c9c>] (__warn+0x228/0x22c) [<c0126c9c>] (__warn) from [<c0126d4c>] (warn_slowpath_fmt+0xac/0xb4) [<c0126d4c>] (warn_slowpath_fmt) from [<c064e844>] (drm_atomic_helper_connector_duplicate_state+0x60/0x68) [<c064e844>] (drm_atomic_helper_connector_duplicate_state) from [<c06685f4>] (drm_atomic_get_connector_state+0xd8/0x190) [<c06685f4>] (drm_atomic_get_connector_state) from [<c066960c>] (__drm_atomic_helper_set_config+0x2a0/0x368) [<c066960c>] (__drm_atomic_helper_set_config) from [<c0680a20>] (drm_client_modeset_commit_atomic+0x178/0x27c) [<c0680a20>] (drm_client_modeset_commit_atomic) from [<c0680be0>] (drm_client_modeset_commit_locked+0x48/0x1d0) [<c0680be0>] (drm_client_modeset_commit_locked) from [<c0651c60>] (drm_fb_helper_pan_display+0x90/0x1c4) [<c0651c60>] (drm_fb_helper_pan_display) from [<c05b2ab0>] (fb_pan_display+0xcc/0x138) [<c05b2ab0>] (fb_pan_display) from [<c05bd024>] (bit_update_start+0x14/0x30) [<c05bd024>] (bit_update_start) from [<c05bac30>] (fbcon_switch+0x2d0/0x3e4) [<c05bac30>] (fbcon_switch) from [<c0609afc>] (redraw_screen+0x15c/0x22c) [<c0609afc>] (redraw_screen) from [<c05ba7e4>] (fbcon_prepare_logo+0x2d4/0x450) [<c05ba7e4>] (fbcon_prepare_logo) from [<c05bbe50>] (fbcon_init+0x3b4/0x510) [<c05bbe50>] (fbcon_init) from [<c0608b50>] (visual_init+0xc0/0x108) [<c0608b50>] (visual_init) from [<c0609d78>] (do_bind_con_driver+0x1ac/0x388) [<c0609d78>] (do_bind_con_driver) from [<c060a2b0>] (do_take_over_console+0x13c/0x1c8) [<c060a2b0>] (do_take_over_console) from [<c05b90e0>] (do_fbcon_takeover+0x74/0xcc) [<c05b90e0>] (do_fbcon_takeover) from [<c05b38f0>] (register_framebuffer+0x1c8/0x2d8) [<c05b38f0>] (register_framebuffer) from [<c06524a4>] (__drm_fb_helper_initial_config_and_unlock+0x440/0x65c) [<c06524a4>] (__drm_fb_helper_initial_config_and_unlock) from [<c063dfbc>] (drm_kms_helper_hotplug_event+0x24/0x30) [<c063dfbc>] (drm_kms_helper_hotplug_event) from [<c0690fb8>] (exynos_dsi_host_attach+0x170/0x2a4) [<c0690fb8>] (exynos_dsi_host_attach) from [<c069d064>] (tc358764_probe+0xe8/0x160) [<c069d064>] (tc358764_probe) from [<c06b6fb0>] (really_probe+0x190/0x450) [<c06b6fb0>] (really_probe) from [<c06b7314>] (__driver_probe_device+0xa4/0x204) [<c06b7314>] (__driver_probe_device) from [<c06b74a8>] (driver_probe_device+0x34/0xd4) [<c06b74a8>] (driver_probe_device) from [<c06b7884>] (__device_attach_driver+0xb0/0x11c) [<c06b7884>] (__device_attach_driver) from [<c06b5094>] (bus_for_each_drv+0x70/0xb4) [<c06b5094>] (bus_for_each_drv) from [<c06b6d80>] (__device_attach+0xe0/0x178) [<c06b6d80>] (__device_attach) from [<c06b5e0c>] (bus_probe_device+0x88/0x90) [<c06b5e0c>] (bus_probe_device) from [<c06b632c>] (deferred_probe_work_func+0x4c/0xe8) [<c06b632c>] (deferred_probe_work_func) from [<c0148990>] (process_one_work+0x2c8/0x7ec) [<c0148990>] (process_one_work) from [<c0148f04>] (worker_thread+0x50/0x584) [<c0148f04>] (worker_thread) from [<c0151300>] (kthread+0x13c/0x19c) [<c0151300>] (kthread) from [<c0100108>] (ret_from_fork+0x14/0x2c) Exception stack(0xc1cc1fb0 to 0xc1cc1ff8) 1fa0: 00000000 00000000 00000000 00000000 1fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 1fe0: 00000000 00000000 00000000 00000000 00000013 00000000 irq event stamp: 24393 hardirqs last enabled at (24399): [<c01a3b94>] vprintk_emit+0x270/0x2b4 hardirqs last disabled at (24404): [<c01a3b50>] vprintk_emit+0x22c/0x2b4 softirqs last enabled at (21880): [<c01016fc>] __do_softirq+0x4cc/0x5ec softirqs last disabled at (21875): [<c01301c8>] irq_exit+0x1cc/0x200 ---[ end trace 0fa33551718d6681 ]--- Console: switching to colour frame buffer device 146x42 ------------[ cut here ]------------ WARNING: CPU: 0 PID: 7 at drivers/gpu/drm/drm_atomic_state_helper.c:494 drm_atomic_helper_connector_duplicate_state+0x60/0x68 Modules linked in: CPU: 0 PID: 7 Comm: kworker/u4:0 Tainted: G W 5.16.0-rc5-next-20211213-00001-gac4117943791 #11072 Hardware name: Samsung Exynos (Flattened Device Tree) Workqueue: events_unbound deferred_probe_work_func [<c01110d0>] (unwind_backtrace) from [<c010cab0>] (show_stack+0x10/0x14) [<c010cab0>] (show_stack) from [<c0b71b58>] (dump_stack_lvl+0x58/0x70) [<c0b71b58>] (dump_stack_lvl) from [<c0126c9c>] (__warn+0x228/0x22c) [<c0126c9c>] (__warn) from [<c0126d4c>] (warn_slowpath_fmt+0xac/0xb4) [<c0126d4c>] (warn_slowpath_fmt) from [<c064e844>] (drm_atomic_helper_connector_duplicate_state+0x60/0x68) [<c064e844>] (drm_atomic_helper_connector_duplicate_state) from [<c06685f4>] (drm_atomic_get_connector_state+0xd8/0x190) [<c06685f4>] (drm_atomic_get_connector_state) from [<c066960c>] (__drm_atomic_helper_set_config+0x2a0/0x368) [<c066960c>] (__drm_atomic_helper_set_config) from [<c0680a20>] (drm_client_modeset_commit_atomic+0x178/0x27c) [<c0680a20>] (drm_client_modeset_commit_atomic) from [<c0680be0>] (drm_client_modeset_commit_locked+0x48/0x1d0) [<c0680be0>] (drm_client_modeset_commit_locked) from [<c0651c60>] (drm_fb_helper_pan_display+0x90/0x1c4) [<c0651c60>] (drm_fb_helper_pan_display) from [<c05b2ab0>] (fb_pan_display+0xcc/0x138) [<c05b2ab0>] (fb_pan_display) from [<c05bd024>] (bit_update_start+0x14/0x30) [<c05bd024>] (bit_update_start) from [<c05bac30>] (fbcon_switch+0x2d0/0x3e4) [<c05bac30>] (fbcon_switch) from [<c0609afc>] (redraw_screen+0x15c/0x22c) [<c0609afc>] (redraw_screen) from [<c0609e84>] (do_bind_con_driver+0x2b8/0x388) [<c0609e84>] (do_bind_con_driver) from [<c060a2b0>] (do_take_over_console+0x13c/0x1c8) [<c060a2b0>] (do_take_over_console) from [<c05b90e0>] (do_fbcon_takeover+0x74/0xcc) [<c05b90e0>] (do_fbcon_takeover) from [<c05b38f0>] (register_framebuffer+0x1c8/0x2d8) [<c05b38f0>] (register_framebuffer) from [<c06524a4>] (__drm_fb_helper_initial_config_and_unlock+0x440/0x65c) [<c06524a4>] (__drm_fb_helper_initial_config_and_unlock) from [<c063dfbc>] (drm_kms_helper_hotplug_event+0x24/0x30) [<c063dfbc>] (drm_kms_helper_hotplug_event) from [<c0690fb8>] (exynos_dsi_host_attach+0x170/0x2a4) [<c0690fb8>] (exynos_dsi_host_attach) from [<c069d064>] (tc358764_probe+0xe8/0x160) [<c069d064>] (tc358764_probe) from [<c06b6fb0>] (really_probe+0x190/0x450) [<c06b6fb0>] (really_probe) from [<c06b7314>] (__driver_probe_device+0xa4/0x204) [<c06b7314>] (__driver_probe_device) from [<c06b74a8>] (driver_probe_device+0x34/0xd4) [<c06b74a8>] (driver_probe_device) from [<c06b7884>] (__device_attach_driver+0xb0/0x11c) [<c06b7884>] (__device_attach_driver) from [<c06b5094>] (bus_for_each_drv+0x70/0xb4) [<c06b5094>] (bus_for_each_drv) from [<c06b6d80>] (__device_attach+0xe0/0x178) [<c06b6d80>] (__device_attach) from [<c06b5e0c>] (bus_probe_device+0x88/0x90) [<c06b5e0c>] (bus_probe_device) from [<c06b632c>] (deferred_probe_work_func+0x4c/0xe8) [<c06b632c>] (deferred_probe_work_func) from [<c0148990>] (process_one_work+0x2c8/0x7ec) [<c0148990>] (process_one_work) from [<c0148f04>] (worker_thread+0x50/0x584) [<c0148f04>] (worker_thread) from [<c0151300>] (kthread+0x13c/0x19c) [<c0151300>] (kthread) from [<c0100108>] (ret_from_fork+0x14/0x2c) Exception stack(0xc1cc1fb0 to 0xc1cc1ff8) 1fa0: 00000000 00000000 00000000 00000000 1fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 1fe0: 00000000 00000000 00000000 00000000 00000013 00000000 irq event stamp: 24477 hardirqs last enabled at (24483): [<c01a3b94>] vprintk_emit+0x270/0x2b4 hardirqs last disabled at (24488): [<c01a3b50>] vprintk_emit+0x22c/0x2b4 softirqs last enabled at (21880): [<c01016fc>] __do_softirq+0x4cc/0x5ec softirqs last disabled at (21875): [<c01301c8>] irq_exit+0x1cc/0x200 ---[ end trace 0fa33551718d6682 ]--- Again, there is something wrong with connector registration: # ./modetest -C -Mexynos [ 69.085387] ------------[ cut here ]------------ [ 69.088593] WARNING: CPU: 1 PID: 1299 at drivers/gpu/drm/drm_atomic_state_helper.c:494 drm_atomic_helper_connector_duplicate_state+0x60/0x68 [ 69.101211] Modules linked in: s5p_mfc exynos_gsc v4l2_mem2mem videobuf2_dma_contig videobuf2_memops videobuf2_v4l2 videobuf2_common videodev mc [ 69.114158] CPU: 1 PID: 1299 Comm: modetest Tainted: G W 5.16.0-rc5-next-20211213-00002-ga010c46089fa #11073 [ 69.125201] Hardware name: Samsung Exynos (Flattened Device Tree) [ 69.131279] [<c01110d0>] (unwind_backtrace) from [<c010cab0>] (show_stack+0x10/0x14) [ 69.139002] [<c010cab0>] (show_stack) from [<c0b71c00>] (dump_stack_lvl+0x58/0x70) [ 69.146554] [<c0b71c00>] (dump_stack_lvl) from [<c0126c9c>] (__warn+0x228/0x22c) [ 69.153932] [<c0126c9c>] (__warn) from [<c0126d4c>] (warn_slowpath_fmt+0xac/0xb4) [ 69.161396] [<c0126d4c>] (warn_slowpath_fmt) from [<c064e844>] (drm_atomic_helper_connector_duplicate_state+0x60/0x68) [ 69.172074] [<c064e844>] (drm_atomic_helper_connector_duplicate_state) from [<c06685f4>] (drm_atomic_get_connector_state+0xd8/0x190) [ 69.183966] [<c06685f4>] (drm_atomic_get_connector_state) from [<c066960c>] (__drm_atomic_helper_set_config+0x2a0/0x368) [ 69.194814] [<c066960c>] (__drm_atomic_helper_set_config) from [<c0680a20>] (drm_client_modeset_commit_atomic+0x178/0x27c) [ 69.205839] [<c0680a20>] (drm_client_modeset_commit_atomic) from [<c0680be0>] (drm_client_modeset_commit_locked+0x48/0x1d0) [ 69.216949] [<c0680be0>] (drm_client_modeset_commit_locked) from [<c0680d8c>] (drm_client_modeset_commit+0x24/0x40) [ 69.227364] [<c0680d8c>] (drm_client_modeset_commit) from [<c0652a94>] (__drm_fb_helper_restore_fbdev_mode_unlocked+0x64/0xc8) [ 69.238735] [<c0652a94>] (__drm_fb_helper_restore_fbdev_mode_unlocked) from [<c0655ec8>] (drm_lastclose+0x30/0x4c) [ 69.249065] [<c0655ec8>] (drm_lastclose) from [<c0655ff4>] (drm_release+0x110/0x114) [ 69.256789] [<c0655ff4>] (drm_release) from [<c02e6058>] (__fput+0x88/0x258) [ 69.263821] [<c02e6058>] (__fput) from [<c014df0c>] (task_work_run+0x8c/0xc8) [ 69.270939] [<c014df0c>] (task_work_run) from [<c010c30c>] (do_work_pending+0x534/0x63c) [ 69.279010] [<c010c30c>] (do_work_pending) from [<c0100088>] (slow_work_pending+0xc/0x20) [ 69.287169] Exception stack(0xc3e4bfb0 to 0xc3e4bff8) [ 69.292205] bfa0: 00000000 0000001f e4a15400 00000000 [ 69.300364] bfc0: 00000001 00000003 00000000 00000006 00022188 00000000 b6f2c000 00000000 [ 69.308523] bfe0: b6e2daa0 bee27a98 0000e7c4 b6e2dac0 60000010 00000003 [ 69.315292] irq event stamp: 3229 [ 69.318419] hardirqs last enabled at (3237): [<c01a0cfc>] __up_console_sem+0x50/0x60 [ 69.326275] hardirqs last disabled at (3252): [<c01a0ce8>] __up_console_sem+0x3c/0x60 [ 69.334076] softirqs last enabled at (3250): [<c01016fc>] __do_softirq+0x4cc/0x5ec [ 69.341680] softirqs last disabled at (3245): [<c01301c8>] irq_exit+0x1cc/0x200 [ 69.349066] ---[ end trace ab79782cf462efca ]--- could not get [ 69.355098] ------------[ cut here ]------------ [ 69.359389] WARNING: CPU: 1 PID: 1299 at drivers/gpu/drm/drm_atomic_state_helper.c:494 drm_atomic_helper_connector_duplicate_state+0x60/0x68 [ 69.372111] Modules linked in: s5p_mfc exynos_gsc v4l2_mem2mem videobuf2_dma_contig videobuf2_memops videobuf2_v4l2 videobuf2_common videodev mc [ 69.384964] CPU: 1 PID: 1299 Comm: modetest Tainted: G W 5.16.0-rc5-next-20211213-00002-ga010c46089fa #11073 [ 69.396017] Hardware name: Samsung Exynos (Flattened Device Tree) [ 69.402094] [<c01110d0>] (unwind_backtrace) from [<c010cab0>] (show_stack+0x10/0x14) [ 69.409818] [<c010cab0>] (show_stack) from [<c0b71c00>] (dump_stack_lvl+0x58/0x70) [ 69.417370] [<c0b71c00>] (dump_stack_lvl) from [<c0126c9c>] (__warn+0x228/0x22c) [ 69.424748] [<c0126c9c>] (__warn) from [<c0126d4c>] (warn_slowpath_fmt+0xac/0xb4) [ 69.432213] [<c0126d4c>] (warn_slowpath_fmt) from [<c064e844>] (drm_atomic_helper_connector_duplicate_state+0x60/0x68) [ 69.442889] [<c064e844>] (drm_atomic_helper_connector_duplicate_state) from [<c06685f4>] (drm_atomic_get_connector_state+0xd8/0x190) [ 69.454781] [<c06685f4>] (drm_atomic_get_connector_state) from [<c066960c>] (__drm_atomic_helper_set_config+0x2a0/0x368) [ 69.465630] [<c066960c>] (__drm_atomic_helper_set_config) from [<c0680a20>] (drm_client_modeset_commit_atomic+0x178/0x27c) [ 69.476654] [<c0680a20>] (drm_client_modeset_commit_atomic) from [<c0680be0>] (drm_client_modeset_commit_locked+0x48/0x1d0) [ 69.487764] [<c0680be0>] (drm_client_modeset_commit_locked) from [<c0680d8c>] (drm_client_modeset_commit+0x24/0x40) [ 69.498181] [<c0680d8c>] (drm_client_modeset_commit) from [<c0652a94>] (__drm_fb_helper_restore_fbdev_mode_unlocked+0x64/0xc8) [ 69.509551] [<c0652a94>] (__drm_fb_helper_restore_fbdev_mode_unlocked) from [<c0655ec8>] (drm_lastclose+0x30/0x4c) [ 69.519881] [<c0655ec8>] (drm_lastclose) from [<c0655ff4>] (drm_release+0x110/0x114) [ 69.527605] [<c0655ff4>] (drm_release) from [<c02e6058>] (__fput+0x88/0x258) [ 69.534636] [<c02e6058>] (__fput) from [<c014df0c>] (task_work_run+0x8c/0xc8) [ 69.541754] [<c014df0c>] (task_work_run) from [<c012cb20>] (do_exit+0x3f8/0xc1c) [ 69.549133] [<c012cb20>] (do_exit) from [<c012e6b8>] (do_group_exit+0x2c/0xa0) [ 69.556337] [<c012e6b8>] (do_group_exit) from [<c013d09c>] (get_signal+0x1d0/0xe6c) [ 69.563976] [<c013d09c>] (get_signal) from [<c010bef4>] (do_work_pending+0x11c/0x63c) [ 69.571786] [<c010bef4>] (do_work_pending) from [<c0100088>] (slow_work_pending+0xc/0x20) [ 69.579945] Exception stack(0xc3e4bfb0 to 0xc3e4bff8) [ 69.584982] bfa0: 00000008 0000005f 00000002 00023388 [ 69.593140] bfc0: 00000001 000232a8 00000000 00023398 0000003e 00000000 00023360 00000000 [ 69.601299] bfe0: 00023590 bee27ae8 00009ec0 00009e9c 80000010 ffffffff [ 69.608150] irq event stamp: 3691 [ 69.611237] hardirqs last enabled at (3703): [<c015a6b0>] finish_task_switch+0xc4/0x264 [ 69.619337] hardirqs last disabled at (3724): [<c01a0ce8>] __up_console_sem+0x3c/0x60 [ 69.627123] softirqs last enabled at (3722): [<c01016fc>] __do_softirq+0x4cc/0x5ec [ 69.634818] softirqs last disabled at (3711): [<c01301c8>] irq_exit+0x1cc/0x200 [ 69.642009] ---[ end trace ab79782cf462efcb ]--- connector 62: No such file or directory Segmentation fault This reminds me a discussion from last year: https://lore.kernel.org/all/f22146de-1660-035c-c476-f7b3354de7cb@xxxxxxxxxxx/ Best regards -- Marek Szyprowski, PhD Samsung R&D Institute Poland
