Mario Kleiner 90e94b160c drm/amdgpu: Fix error handling in amdgpu_flip_work_func. ... The patch e1d09dc0cc: "drm/amdgpu: Don't hang in amdgpu_flip_work_func on disabled crtc." from Feb 19, 2016, leads to the following static checker warning, as reported by Dan Carpenter in https://lists.freedesktop.org/archives/dri-devel/2016-February/101987.html drivers/gpu/drm/amd/amdgpu/amdgpu_display.c:127 amdgpu_flip_work_func() warn: should this be 'repcnt == -1' drivers/gpu/drm/amd/amdgpu/amdgpu_display.c:136 amdgpu_flip_work_func() error: double unlock 'spin_lock:&crtc->dev->event_lock' drivers/gpu/drm/amd/amdgpu/amdgpu_display.c:136 amdgpu_flip_work_func() error: double unlock 'irqsave:flags' This patch fixes both reported problems: Change post-decrement of repcnt to pre-decrement, so it can't underflow anymore, but still performs up to three repetitions - three is the maximum one could expect in practice. Move the spin_unlock_irqrestore to where it actually belongs. Reviewed-by: Michel Dänzer <michel.daenzer@amd.com> Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Mario Kleiner <mario.kleiner.de@gmail.com> Cc: <stable@vger.kernel.org> # 4.4+ Cc: Michel Dänzer <michel.daenzer@amd.com> Cc: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>		2016-03-05 12:31:45 -05:00
..
amdgpu	drm/amdgpu: Fix error handling in amdgpu_flip_work_func.	2016-03-05 12:31:45 -05:00
amdkfd	drm/amdkfd: Remove unnecessary cast in kfree	2016-01-28 14:40:11 +02:00
include	drma/dmgpu: move cg and pg flags into shared headers	2016-02-08 10:37:47 -05:00
powerplay	drm/amdgpu/powerplay/cz: enable/disable vce dpm independent of vce pg	2016-03-02 11:01:24 -05:00
scheduler	drm/amdgpu: add entity only when first job come	2015-12-14 19:41:19 -05:00