drm/radeon: allow semaphore emission to fail

To workaround bugs and/or certain limits it's sometimes
useful to fall back to waiting on fences.

Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org

1 files changed, 2 insertions, 7 deletions

diff --git a/drivers/gpu/drm/radeon/evergreen_dma.c b/drivers/gpu/drm/radeon/evergreen_dma.c
index 6a0656d00ed0..a37b54436382 100644
--- a/drivers/gpu/drm/radeon/evergreen_dma.c
+++ b/drivers/gpu/drm/radeon/evergreen_dma.c
@@ -131,13 +131,8 @@ int evergreen_copy_dma(struct radeon_device *rdev,
                 return r;
         }
 
-        if (radeon_fence_need_sync(*fence, ring->idx)) {
-                radeon_semaphore_sync_rings(rdev, sem, (*fence)->ring,
-                                            ring->idx);
-                radeon_fence_note_sync(*fence, ring->idx);
-        } else {
-                radeon_semaphore_free(rdev, &sem, NULL);
-        }
+        radeon_semaphore_sync_to(sem, *fence);
+        radeon_semaphore_sync_rings(rdev, sem, ring->idx);
 
         for (i = 0; i < num_loops; i++) {
                 cur_size_in_dw = size_in_dw;