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dma-fence/reservation: Markup rcu protected access for DEBUG_MUTEXES

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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
This commit is contained in:
Chris Wilson 2019-06-12 14:28:30 +01:00
parent c412187dda
commit 5740671e59
1 changed files with 6 additions and 2 deletions
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8
include/linux/reservation.h
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@ -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);
}