On 12/05/2017 08:41 AM, Andrey Grodzovsky wrote:
> Signed-off-by: Andrey Grodzovsky <[email protected]>
> ---
>   drivers/gpu/drm/amd/amdgpu/amdgpu_sync.c | 9 ++++++---
>   1 file changed, 6 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_sync.c 
> b/drivers/gpu/drm/amd/amdgpu/amdgpu_sync.c
> index f3d1a25..84fd367 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_sync.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_sync.c
> @@ -120,7 +120,7 @@ static void amdgpu_sync_keep_later(struct dma_fence 
> **keep,
>    * Tries to add the fence to an existing hash entry. Returns true when an 
> entry
>    * was found, false otherwise.
>    */
> -static bool amdgpu_sync_add_later(struct amdgpu_sync *sync, struct dma_fence 
> *f)
> +static bool amdgpu_sync_add_later(struct amdgpu_sync *sync, struct dma_fence 
> *f, bool explicit)
>   {
>       struct amdgpu_sync_entry *e;
>   
> @@ -129,6 +129,10 @@ static bool amdgpu_sync_add_later(struct amdgpu_sync 
> *sync, struct dma_fence *f)
>                       continue;
>   
>               amdgpu_sync_keep_later(&e->fence, f);
> +
> +             /* Preserve eplicit flag to not loose pipe line sync */

Minor nitpick.  s/eplicit/explicit/

> +             e->explicit |= explicit;
> +
>               return true;
>       }
>       return false;
> @@ -148,12 +152,11 @@ int amdgpu_sync_fence(struct amdgpu_device *adev, 
> struct amdgpu_sync *sync,
>   
>       if (!f)
>               return 0;
> -
>       if (amdgpu_sync_same_dev(adev, f) &&
>           amdgpu_sync_get_owner(f) == AMDGPU_FENCE_OWNER_VM)
>               amdgpu_sync_keep_later(&sync->last_vm_update, f);
>   
> -     if (amdgpu_sync_add_later(sync, f))
> +     if (amdgpu_sync_add_later(sync, f, explicit))
>               return 0;
>   
>       e = kmem_cache_alloc(amdgpu_sync_slab, GFP_KERNEL);

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