Re: [PATCH 6/6] drm/radeon: use dma_resv_wait_timeout() instead of manually waiting

["Das, Nirmoy" <nirmoy.das@xxxxxxx>]

Acked-by: Nirmoy Das <nirmoy.das@xxxxxxx>

On 10/28/2021 3:26 PM, Christian König wrote:
> Don't touch the exclusive fence manually here, but rather use the
> general dma_resv function. We did that for better hw reset handling but
> this doesn't necessary work correctly.
>
> Signed-off-by: Christian König <christian.koenig@xxxxxxx>
> ---
>   drivers/gpu/drm/radeon/radeon_uvd.c | 13 +++++--------
>   1 file changed, 5 insertions(+), 8 deletions(-)
>
> diff --git a/drivers/gpu/drm/radeon/radeon_uvd.c b/drivers/gpu/drm/radeon/radeon_uvd.c
> index 2ea86919d953..377f9cdb5b53 100644
> --- a/drivers/gpu/drm/radeon/radeon_uvd.c
> +++ b/drivers/gpu/drm/radeon/radeon_uvd.c
> @@ -469,7 +469,6 @@ static int radeon_uvd_cs_msg(struct radeon_cs_parser *p, struct radeon_bo *bo,
>   {
>   	int32_t *msg, msg_type, handle;
>   	unsigned img_size = 0;
> -	struct dma_fence *f;
>   	void *ptr;
>   
>   	int i, r;
> @@ -479,13 +478,11 @@ static int radeon_uvd_cs_msg(struct radeon_cs_parser *p, struct radeon_bo *bo,
>   		return -EINVAL;
>   	}
>   
> -	f = dma_resv_excl_fence(bo->tbo.base.resv);
> -	if (f) {
> -		r = radeon_fence_wait((struct radeon_fence *)f, false);
> -		if (r) {
> -			DRM_ERROR("Failed waiting for UVD message (%d)!\n", r);
> -			return r;
> -		}
> +	r = dma_resv_wait_timeout(bo->tbo.base.resv, false, false,
> +				  MAX_SCHEDULE_TIMEOUT);
> +	if (r <= 0) {
> +		DRM_ERROR("Failed waiting for UVD message (%d)!\n", r);
> +		return r ? r : -ETIME;
>   	}
>   
>   	r = radeon_bo_kmap(bo, &ptr);