diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2019-06-12 16:28:30 +0300 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2019-06-12 17:27:44 +0300 |
| commit | 5740671e596bdc3986a5391997de194300970201 (patch) | |
| tree | 3036da43b1483e5fced875dd1d1db7e247bc4987 | |
| parent | c412187dda6ea557879b6103d17a3f47e38621ed (diff) | |
| download | linux-5740671e596bdc3986a5391997de194300970201.tar.xz | |
dma-fence/reservation: Markup rcu protected access for DEBUG_MUTEXES
Mark the access to reservation_object.fence as being protected to
silence sparse.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190612132830.31221-1-chris@chris-wilson.co.uk
| -rw-r--r-- | include/linux/reservation.h | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/include/linux/reservation.h b/include/linux/reservation.h index ee750765cc94..644a22dbe53b 100644 --- a/include/linux/reservation.h +++ b/include/linux/reservation.h @@ -216,8 +216,12 @@ reservation_object_unlock(struct reservation_object *obj) { #ifdef CONFIG_DEBUG_MUTEXES /* Test shared fence slot reservation */ - if (obj->fence) - obj->fence->shared_max = obj->fence->shared_count; + if (rcu_access_pointer(obj->fence)) { + struct reservation_object_list *fence = + reservation_object_get_list(obj); + + fence->shared_max = fence->shared_count; + } #endif ww_mutex_unlock(&obj->lock); } |