Commit f4b7fb94 authored by Dave Airlie's avatar Dave Airlie
Browse files

drm/radeon/kms: take vram mutex pointer before derefing object. 



since derefing the object might free it.

Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
parent 539d2418

drivers/gpu/drm/radeon/radeon_object.c

+4 −2
Original line number Diff line number Diff line
@@ -168,13 +168,15 @@ void radeon_bo_kunmap(struct radeon_bo *bo) 
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;

}