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drm/amdgpu: clear UVD VCPU buffer when err_event_athub generated

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The err_event_athub error will mess up the buffer and cause UVD resume hang.

Signed-off-by: Le Ma <le.ma@amd.com>
Reviewed-by: Hawking Zhang <hawking.zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Le Ma 2019-10-25 16:50:53 +08:00 committed by Alex Deucher
parent b4def3744b
commit 8baaadba73
1 changed files with 9 additions and 1 deletions
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10
drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c
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@ -39,6 +39,8 @@
#include "cikd.h"
#include "uvd/uvd_4_2_d.h"
#include "amdgpu_ras.h"
/* 1 second timeout */
#define UVD_IDLE_TIMEOUT msecs_to_jiffies(1000)
@ -372,7 +374,13 @@ int amdgpu_uvd_suspend(struct amdgpu_device *adev)
if (!adev->uvd.inst[j].saved_bo)
return -ENOMEM;
memcpy_fromio(adev->uvd.inst[j].saved_bo, ptr, size);
/* re-write 0 since err_event_athub will corrupt VCPU buffer */
if (amdgpu_ras_intr_triggered()) {
DRM_WARN("UVD VCPU state may lost due to RAS ERREVENT_ATHUB_INTERRUPT\n");
memset(adev->uvd.inst[j].saved_bo, 0, size);
} else {
memcpy_fromio(adev->uvd.inst[j].saved_bo, ptr, size);
}
}
return 0;
}