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Commit cc7d8c79 authored by Monk Liu's avatar Monk Liu Committed by Alex Deucher
Browse files

drm/amdgpu: clear RB at ring init 



This help fix reloading driver hang issue of SDMA
ring.

Signed-off-by: default avatarMonk Liu <Monk.Liu@amd.com>
Reviewed-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Reviewed-by: default avatarChristian König <christian.koenig@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 5dd0775e

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

+3 −0
Original line number Diff line number Diff line
@@ -310,6 +310,9 @@ int amdgpu_ring_init(struct amdgpu_device *adev, struct amdgpu_ring *ring, 
		}

		r = amdgpu_bo_kmap(ring->ring_obj,

				       (void **)&ring->ring);



		memset((void *)ring->ring, 0, ring->ring_size);



		amdgpu_bo_unreserve(ring->ring_obj);

		if (r) {

			dev_err(adev->dev, "(%d) ring map failed\n", r);