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Commit 9066b0c3 authored by Chunming Zhou's avatar Chunming Zhou Committed by Alex Deucher
Browse files

drm/amdgpu: fix no sync_wait in copy_buffer 



when eviction is happening, if don't handle
dependency, then the fence could be dead off.

Signed-off-by: default avatarChunming Zhou <david1.zhou@amd.com>
Reviewed-by: default avatarJammy Zhou <Jammy.Zhou@amd.com>
Reviewed-by: default avatarChristian K?nig <christian.koenig@amd.com>
parent 3c62338c

drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c

+7 −1
Original line number Diff line number Diff line
@@ -1014,13 +1014,19 @@ int amdgpu_copy_buffer(struct amdgpu_ring *ring, 
	/* for fence and sync */

	num_dw += 64 + AMDGPU_NUM_SYNCS * 8;



	r = amdgpu_sync_wait(&sync);

	if (r) {

		DRM_ERROR("sync wait failed (%d).\n", r);

		amdgpu_sync_free(adev, &sync, NULL);

		return r;

	}



	r = amdgpu_ring_lock(ring, num_dw);

	if (r) {

		DRM_ERROR("ring lock failed (%d).\n", r);

		amdgpu_sync_free(adev, &sync, NULL);

		return r;

	}



	amdgpu_sync_rings(&sync, ring);



	for (i = 0; i < num_loops; i++) {