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drm/amd/display: Fix s3 hang on resume.

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Avoid enabling CRTC_VERTICAL_INTERRUPT0 twice on resume.
It's enabled once from within manage_dm_interrupts in mode set
and another explicitly from amdgpu_dm_irq_resume_late.
Seems it lead to CRTC hang.

Signed-off-by: Andrey Grodzovsky <Andrey.Grodzovsky@amd.com>
Acked-by: Harry Wentland <Harry.Wentland@amd.com>
Reviewed-by: Andrey Grodzovsky <Andrey.Grodzovsky@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Andrey Grodzovsky
2017-03-31 14:15:31 -04:00
committed by Alex Deucher
parent 7160c74cd0
commit 9faa423716
3 changed files with 13 additions and 7 deletions
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2
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
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@@ -575,7 +575,7 @@ int amdgpu_dm_display_resume(struct amdgpu_device *adev )
ret = drm_atomic_helper_resume(ddev, adev->dm.cached_state);
amdgpu_dm_irq_resume(adev);
amdgpu_dm_irq_resume_late(adev);
return ret;
}