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drm/amdgpu: stop scheduler when calling hw_fini (v2)

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This gurantees no more work on the ring can be submitted
to hardware in suspend/resume case, otherwise a potential
race will occur and the ring will get no chance to stay
empty before suspend.

v2: Call drm_sched_resubmit_job before drm_sched_start to
restart jobs from the pending list.

Suggested-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Suggested-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Guchun Chen <guchun.chen@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
This commit is contained in:
Guchun Chen 2021-08-27 18:31:41 +08:00 committed by Alex Deucher
parent 156872b07e
commit f7d6779df6
1 changed files with 8 additions and 0 deletions
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8
drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
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@ -552,6 +552,9 @@ void amdgpu_fence_driver_hw_fini(struct amdgpu_device *adev)
if (!ring || !ring->fence_drv.initialized)
continue;
if (!ring->no_scheduler)
drm_sched_stop(&ring->sched, NULL);
/* You can't wait for HW to signal if it's gone */
if (!drm_dev_is_unplugged(&adev->ddev))
r = amdgpu_fence_wait_empty(ring);
@ -611,6 +614,11 @@ void amdgpu_fence_driver_hw_init(struct amdgpu_device *adev)
if (!ring || !ring->fence_drv.initialized)
continue;
if (!ring->no_scheduler) {
drm_sched_resubmit_jobs(&ring->sched);
drm_sched_start(&ring->sched, true);
}
/* enable the interrupt */
if (ring->fence_drv.irq_src)
amdgpu_irq_get(adev, ring->fence_drv.irq_src,