We'll need unique IDs for graph objects and a way to associate
them with the media interface.
So, add an atomic var to be used to create unique IDs and
a list to store such objects.
Signed-off-by: Mauro Carvalho Chehab <mchehab@xxxxxxxxxxxxxxx>
diff --git a/drivers/media/media-device.c b/drivers/media/media-device.c
index 7b39440192d6..e627b0b905ad 100644
--- a/drivers/media/media-device.c
+++ b/drivers/media/media-device.c
@@ -396,6 +396,10 @@ int __must_check __media_device_register(struct media_device *mdev,
return ret;
}
+ /* Initialize media graph object list and ID */
+ atomic_set(&mdev->last_obj_id, 0);
+ INIT_LIST_HEAD(&mdev->object_list);
+
return 0;
}
EXPORT_SYMBOL_GPL(__media_device_register);
diff --git a/include/media/media-device.h b/include/media/media-device.h
index 6e6db78f1ee2..a9d546716e49 100644
--- a/include/media/media-device.h
+++ b/include/media/media-device.h
@@ -78,6 +78,10 @@ struct media_device {
int (*link_notify)(struct media_link *link, u32 flags,
unsigned int notification);
+
+ /* Used by media_graph stuff */
+ atomic_t last_obj_id;
+ struct list_head object_list;
};
/* Supported link_notify @notification values. */
--
2.4.3
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