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drm/amdgpu:imple ring clear 

we can use it clear ring buffer instead of fullfill
0, which is not correct for engine

Signed-off-by: Monk Liu <Monk.Liu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Monk Liu 2017-02-08 16:49:46 +08:00 committed by Alex Deucher
parent 9b49c3ab06
commit c79ecfbf5b
1 changed files with 7 additions and 0 deletions
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7
drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h
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@ -186,5 +186,12 @@ int amdgpu_ring_init(struct amdgpu_device *adev, struct amdgpu_ring *ring,
unsigned ring_size, struct amdgpu_irq_src *irq_src,
unsigned irq_type);
void amdgpu_ring_fini(struct amdgpu_ring *ring);
static inline void amdgpu_ring_clear_ring(struct amdgpu_ring *ring)
{
int i = 0;
while (i <= ring->ptr_mask)
ring->ring[i++] = ring->funcs->nop;
}
#endif