summaryrefslogtreecommitdiffstats
path: root/include/media/v4l2-fh.h
diff options
context:
space:
mode:
authorDavid S. Miller <davem@davemloft.net>2018-10-04 06:00:17 +0200
committerDavid S. Miller <davem@davemloft.net>2018-10-04 06:00:17 +0200
commit6f41617bf23a17d9cb7cc6ca8161534f05f80293 (patch)
tree2844d8d197a61b0603e31f09613e3272635dd1cc /include/media/v4l2-fh.h
parentMerge branch '10GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/jkirshe... (diff)
parentMerge gitolite.kernel.org:/pub/scm/linux/kernel/git/davem/net (diff)
downloadlinux-6f41617bf23a17d9cb7cc6ca8161534f05f80293.tar.xz
linux-6f41617bf23a17d9cb7cc6ca8161534f05f80293.zip
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Minor conflict in net/core/rtnetlink.c, David Ahern's bug fix in 'net' overlapped the renaming of a netlink attribute in net-next. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/media/v4l2-fh.h')
-rw-r--r--include/media/v4l2-fh.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/include/media/v4l2-fh.h b/include/media/v4l2-fh.h
index ea73fef8bdc0..8586cfb49828 100644
--- a/include/media/v4l2-fh.h
+++ b/include/media/v4l2-fh.h
@@ -38,10 +38,13 @@ struct v4l2_ctrl_handler;
* @prio: priority of the file handler, as defined by &enum v4l2_priority
*
* @wait: event' s wait queue
+ * @subscribe_lock: serialise changes to the subscribed list; guarantee that
+ * the add and del event callbacks are orderly called
* @subscribed: list of subscribed events
* @available: list of events waiting to be dequeued
* @navailable: number of available events at @available list
* @sequence: event sequence number
+ *
* @m2m_ctx: pointer to &struct v4l2_m2m_ctx
*/
struct v4l2_fh {
@@ -52,6 +55,7 @@ struct v4l2_fh {
/* Events */
wait_queue_head_t wait;
+ struct mutex subscribe_lock;
struct list_head subscribed;
struct list_head available;
unsigned int navailable;