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authorSakari Ailus <sakari.ailus@maxwell.research.nokia.com>2010-03-23 15:25:26 +0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2010-05-19 19:58:04 +0400
commit1babcb460f2b87c20eb6860b9685a0dab636cc4b (patch)
treeaaffa67ec3b3fc958ea2d7eea50e1b67242f2645 /drivers/media/video/v4l2-dev.c
parent96d8eab5d0a1a9741a4cae1b3c125d75d1aabedf (diff)
downloadlinux-1babcb460f2b87c20eb6860b9685a0dab636cc4b.tar.xz
V4L/DVB: V4L: File handles
This patch adds a list of v4l2_fh structures to every video_device. It allows using file handle related information in V4L2. The event interface is one example of such use. The use of v4l2_fh is not mandatory for drivers. Signed-off-by: Sakari Ailus <sakari.ailus@maxwell.research.nokia.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/v4l2-dev.c')
-rw-r--r--drivers/media/video/v4l2-dev.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/media/video/v4l2-dev.c b/drivers/media/video/v4l2-dev.c
index 709069916068..65a7b30524ca 100644
--- a/drivers/media/video/v4l2-dev.c
+++ b/drivers/media/video/v4l2-dev.c
@@ -421,6 +421,10 @@ static int __video_register_device(struct video_device *vdev, int type, int nr,
if (!vdev->release)
return -EINVAL;
+ /* v4l2_fh support */
+ spin_lock_init(&vdev->fh_lock);
+ INIT_LIST_HEAD(&vdev->fh_list);
+
/* Part 1: check device type */
switch (type) {
case VFL_TYPE_GRABBER: