drm/i915: hold mutex for unreference() in i915_gem_tiling.c

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@linux.ie>

diff --git a/drivers/gpu/drm/i915/i915_gem_tiling.c b/drivers/gpu/drm/i915/i915_gem_tiling.c
index fa1685cba8402fdbd456be37f627bd21c170cca4..7fb4191ef934c2b9a9549a36737e075d6ee3fca7 100644 (file)
--- a/drivers/gpu/drm/i915/i915_gem_tiling.c
+++ b/drivers/gpu/drm/i915/i915_gem_tiling.c
@@ -299,9 +299,8 @@ i915_gem_set_tiling(struct drm_device *dev, void *data,
        }
        obj_priv->stride = args->stride;
 
-       mutex_unlock(&dev->struct_mutex);
-
        drm_gem_object_unreference(obj);
+       mutex_unlock(&dev->struct_mutex);
 
        return 0;
 }
@@ -340,9 +339,8 @@ i915_gem_get_tiling(struct drm_device *dev, void *data,
                DRM_ERROR("unknown tiling mode\n");
        }
 
-       mutex_unlock(&dev->struct_mutex);
-
        drm_gem_object_unreference(obj);
+       mutex_unlock(&dev->struct_mutex);
 
        return 0;
 }