drm/radeon/kms: take vram mutex pointer before derefing object.
since derefing the object might free it.
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/radeon/radeon_object.c b/drivers/gpu/drm/radeon/radeon_object.c
index 06def70..a8d18bc 100644
--- a/drivers/gpu/drm/radeon/radeon_object.c
+++ b/drivers/gpu/drm/radeon/radeon_object.c
@@ -168,13 +168,15 @@
void radeon_bo_unref(struct radeon_bo **bo)
{
struct ttm_buffer_object *tbo;
+ struct radeon_device *rdev;
if ((*bo) == NULL)
return;
+ rdev = (*bo)->rdev;
tbo = &((*bo)->tbo);
- mutex_lock(&(*bo)->rdev->vram_mutex);
+ mutex_lock(&rdev->vram_mutex);
ttm_bo_unref(&tbo);
- mutex_unlock(&(*bo)->rdev->vram_mutex);
+ mutex_unlock(&rdev->vram_mutex);
if (tbo == NULL)
*bo = NULL;
}