diff --git a/drivers/gpu/host1x/bus.c b/drivers/gpu/host1x/bus.c
index 6b8b7395a418..8a4e0738014d 100644
--- a/drivers/gpu/host1x/bus.c
+++ b/drivers/gpu/host1x/bus.c
@@ -1006,10 +1006,10 @@ void host1x_bo_clear_cached_mappings(struct host1x_bo *bo)
 		if (WARN_ON(!cache))
 			continue;
 
-		mutex_lock(&mapping->cache->lock);
+		mutex_lock(&cache->lock);
 		WARN_ON(kref_read(&mapping->ref) != 1);
 		__host1x_bo_unpin(&mapping->ref);
-		mutex_unlock(&mapping->cache->lock);
+		mutex_unlock(&cache->lock);
 	}
 }
 EXPORT_SYMBOL(host1x_bo_clear_cached_mappings);