1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/gpu/drm/radeon/radeon_ring.c b/drivers/gpu/drm/radeon/radeon_ring.c
index 08e1578f55f8..407d90aaa0c3 100644
--- a/drivers/gpu/drm/radeon/radeon_ring.c
+++ b/drivers/gpu/drm/radeon/radeon_ring.c
@@ -346,7 +346,9 @@ int radeon_ring_alloc(struct radeon_device *rdev, struct radeon_ring *ring, unsi
                 if (ndw < ring->ring_free_dw) {
                         break;
                 }
+                mutex_unlock(&ring->mutex);
                 r = radeon_fence_wait_next(rdev, radeon_ring_index(rdev, ring));
+                mutex_lock(&ring->mutex);
                 if (r)
                         return r;
         }