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drm/amdgpu: fix amdgpu_ring_write_multiple

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Overwriting still used ring content has a low probability to cause
problems, not writing at all has 100% probability to cause problems.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Felix Kuehling <Felix.Kuehling@amd.com>
This commit is contained in:
Christian König 2017-06-28 13:50:07 +02:00 committed by Alex Deucher
parent e8110b1c9b
commit 369421cbfa
1 changed files with 1 additions and 3 deletions
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4
drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h
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@ -227,10 +227,8 @@ static inline void amdgpu_ring_write_multiple(struct amdgpu_ring *ring,
unsigned occupied, chunk1, chunk2;
void *dst;
if (unlikely(ring->count_dw < count_dw)) {
if (unlikely(ring->count_dw < count_dw))
DRM_ERROR("amdgpu: writing more dwords to the ring than expected!\n");
return;
}
occupied = ring->wptr & ring->buf_mask;
dst = (void *)&ring->ring[occupied];