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linux_dsm_epyc7002/drivers/gpu/drm/rockchip
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Emil Renner Berthing 44419ce7d7 drm/rockchip: analogix_dp: Use mutex rather than spinlock 
On the Samsung Chromebook Plus I get this error with 4.14-rc3:

BUG: scheduling while atomic: kworker/3:1/50/0x00000002
Modules linked in:
CPU: 3 PID: 50 Comm: kworker/3:1 Not tainted 4.14.0-0.rc3-kevin #2
Hardware name: Google Kevin (DT)
Workqueue: events analogix_dp_psr_work
Call trace:
[<ffffff80080873b0>] dump_backtrace+0x0/0x320
[<ffffff80080876e4>] show_stack+0x14/0x20
[<ffffff8008606d38>] dump_stack+0x9c/0xbc
[<ffffff80080c6b5c>] __schedule_bug+0x4c/0x70
[<ffffff80086188c0>] __schedule+0x3f0/0x458
[<ffffff8008618960>] schedule+0x38/0xa0
[<ffffff800861c20c>] schedule_hrtimeout_range_clock+0x84/0xe8
[<ffffff800861c2a0>] schedule_hrtimeout_range+0x10/0x18
[<ffffff800861bcec>] usleep_range+0x64/0x78
[<ffffff8008415a6c>] analogix_dp_transfer+0x16c/0x340
[<ffffff8008412550>] analogix_dpaux_transfer+0x10/0x18
[<ffffff80083ceb14>] drm_dp_dpcd_access+0x4c/0xf0
[<ffffff80083cf614>] drm_dp_dpcd_write+0x1c/0x28
[<ffffff8008413b98>] analogix_dp_disable_psr+0x60/0xa8
[<ffffff800840da3c>] analogix_dp_psr_work+0x4c/0x90
[<ffffff80080bb09c>] process_one_work+0x1d4/0x348
[<ffffff80080bb258>] worker_thread+0x48/0x478
[<ffffff80080c11fc>] kthread+0x12c/0x130
[<ffffff8008084290>] ret_from_fork+0x10/0x18

Changing rockchip_dp_device::psr_lock to a mutex rather
than spinlock seems to fix the issue.

Signed-off-by: Emil Renner Berthing <kernel@esmil.dk>
Tested-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Signed-off-by: Mark Yao <mark.yao@rock-chips.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171004175346.11956-1-kernel@esmil.dk
2017-11-13 10:29:23 +08:00
..
analogix_dp-rockchip.c drm/rockchip: analogix_dp: Use mutex rather than spinlock 2017-11-13 10:29:23 +08:00
cdn-dp-core.c drm: Nuke drm_atomic_helper_connector_dpms 2017-08-08 14:48:48 +02:00
cdn-dp-core.h
cdn-dp-reg.c
cdn-dp-reg.h
dw_hdmi-rockchip.c drm/rockchip: dw_hdmi: introduce the pclk for grf 2017-06-23 08:52:03 +08:00
dw-mipi-dsi.c drm: Nuke drm_atomic_helper_connector_dpms 2017-08-08 14:48:48 +02:00
inno_hdmi.c drm/rockchip: make drm_connector_funcs structures const 2017-08-09 18:38:29 +02:00
inno_hdmi.h
Kconfig drm/rockchip: fix Kconfig dependencies 2017-07-24 09:53:09 +08:00
Makefile
rockchip_drm_drv.c main drm pull request for 4.14 merge window 2017-09-03 17:02:26 -07:00
rockchip_drm_drv.h Merge remote-tracking branch 'airlied/drm-next' into drm-misc-next-fixes 2017-06-20 11:50:41 -04:00
rockchip_drm_fb.c drm/rockchip: switch to drm_*_get(), drm_*_put() helpers 2017-08-11 11:35:21 -04:00
rockchip_drm_fb.h
rockchip_drm_fbdev.c drm/rockchip: switch to drm_*_get(), drm_*_put() helpers 2017-08-11 11:35:21 -04:00
rockchip_drm_fbdev.h
rockchip_drm_gem.c drm/rockchip: switch to drm_*_get(), drm_*_put() helpers 2017-08-11 11:35:21 -04:00
rockchip_drm_gem.h drm/rockchip: Use .dumb_map_offset and .dumb_destroy defaults 2017-07-29 14:00:35 +02:00
rockchip_drm_psr.c
rockchip_drm_psr.h
rockchip_drm_vop.c drm/rockchip: switch to drm_*_get(), drm_*_put() helpers 2017-08-11 11:35:21 -04:00
rockchip_drm_vop.h drm/rockchip: vop: fix NV12 video display error 2017-08-04 16:09:39 +08:00
rockchip_vop_reg.c drm/rockchip: vop: rk3328: fix overlay abnormal 2017-07-31 08:44:18 +08:00
rockchip_vop_reg.h drm/rockchip: vop: add a series of vop support 2017-07-31 08:44:06 +08:00