diff options
Diffstat (limited to 'include/media/media-device.h')
| -rw-r--r-- | include/media/media-device.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/media/media-device.h b/include/media/media-device.h index a8390fe87e8..5d2bff4fc9e 100644 --- a/include/media/media-device.h +++ b/include/media/media-device.h @@ -25,6 +25,7 @@ #include <linux/device.h> #include <linux/list.h> +#include <linux/mutex.h> #include <linux/spinlock.h> #include <media/media-devnode.h> @@ -42,6 +43,7 @@ * @entity_id: ID of the next entity to be registered * @entities: List of registered entities * @lock: Entities list lock + * @graph_mutex: Entities graph operation lock * * This structure represents an abstract high-level media device. It allows easy * access to entities and provides basic media device-level support. The @@ -69,6 +71,8 @@ struct media_device { /* Protects the entities list */ spinlock_t lock; + /* Serializes graph operations. */ + struct mutex graph_mutex; }; /* media_devnode to media_device */ |