RE: [PATCH 09/11] drm/amdgpu:imple ring clear

["Deucher, Alexander" <Alexander.Deucher-5C7GfCeVMHo@public.gmane.org>]

> -----Original Message-----
> From: amd-gfx [mailto:amd-gfx-bounces@lists.freedesktop.org] On Behalf
> Of Monk Liu
> Sent: Wednesday, February 08, 2017 4:27 AM
> To: amd-gfx@lists.freedesktop.org
> Cc: Liu, Monk
> Subject: [PATCH 09/11] drm/amdgpu:imple ring clear
> 
> we can use it clear ring buffer instead of fullfill
> 0, which is not correct for engine
> 
> Change-Id: I89dcd7b6c4de558f9b2860209a2739c7d4af262d
> Signed-off-by: Monk Liu <Monk.Liu@amd.com>

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>

> ---
>  drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h | 7 +++++++
>  1 file changed, 7 insertions(+)
> 
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h
> b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h
> index 0e57b04..3fd4ce8 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h
> @@ -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
> --
> 2.7.4
> 
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