Commit f4b7fb94 authored by Dave Airlie's avatar Dave Airlie

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
...@@ -168,13 +168,15 @@ void radeon_bo_kunmap(struct radeon_bo *bo) ...@@ -168,13 +168,15 @@ void radeon_bo_kunmap(struct radeon_bo *bo)
void radeon_bo_unref(struct radeon_bo **bo) void radeon_bo_unref(struct radeon_bo **bo)
{ {
struct ttm_buffer_object *tbo; struct ttm_buffer_object *tbo;
struct radeon_device *rdev;
if ((*bo) == NULL) if ((*bo) == NULL)
return; return;
rdev = (*bo)->rdev;
tbo = &((*bo)->tbo); tbo = &((*bo)->tbo);
mutex_lock(&(*bo)->rdev->vram_mutex); mutex_lock(&rdev->vram_mutex);
ttm_bo_unref(&tbo); ttm_bo_unref(&tbo);
mutex_unlock(&(*bo)->rdev->vram_mutex); mutex_unlock(&rdev->vram_mutex);
if (tbo == NULL) if (tbo == NULL)
*bo = NULL; *bo = NULL;
} }
......
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