drm/amdgpu: always signal all fences

A little fallout from "drm/amdgpu: sanitize fence numbers", we
sometimes need to signal all fences in the ring.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 5 insertions, 2 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
index e320b5b73ac6..0b109aebfec6 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
@@ -204,10 +204,13 @@ void amdgpu_fence_process(struct amdgpu_ring *ring)
         if (seq != ring->fence_drv.sync_seq)
                 amdgpu_fence_schedule_fallback(ring);
 
+        if (unlikely(seq == last_seq))
+                return;
+
         last_seq &= drv->num_fences_mask;
         seq &= drv->num_fences_mask;
 
-        while (last_seq != seq) {
+        do {
                 struct fence *fence, **ptr;
 
                 ++last_seq;
@@ -228,7 +231,7 @@ void amdgpu_fence_process(struct amdgpu_ring *ring)
                         BUG();
 
                 fence_put(fence);
-        }
+        } while (last_seq != seq);
 }
 
 /**