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path: root/drivers/media/video/v4l2-fh.c
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Diffstat (limited to 'drivers/media/video/v4l2-fh.c')
-rw-r--r--drivers/media/video/v4l2-fh.c23
1 files changed, 8 insertions, 15 deletions
diff --git a/drivers/media/video/v4l2-fh.c b/drivers/media/video/v4l2-fh.c
index 717f71e6370..122822d2b8b 100644
--- a/drivers/media/video/v4l2-fh.c
+++ b/drivers/media/video/v4l2-fh.c
@@ -29,23 +29,18 @@
#include <media/v4l2-event.h>
#include <media/v4l2-ioctl.h>
-int v4l2_fh_init(struct v4l2_fh *fh, struct video_device *vdev)
+void v4l2_fh_init(struct v4l2_fh *fh, struct video_device *vdev)
{
fh->vdev = vdev;
+ /* Inherit from video_device. May be overridden by the driver. */
+ fh->ctrl_handler = vdev->ctrl_handler;
INIT_LIST_HEAD(&fh->list);
set_bit(V4L2_FL_USES_V4L2_FH, &fh->vdev->flags);
fh->prio = V4L2_PRIORITY_UNSET;
-
- /*
- * fh->events only needs to be initialized if the driver
- * supports the VIDIOC_SUBSCRIBE_EVENT ioctl.
- */
- if (vdev->ioctl_ops && vdev->ioctl_ops->vidioc_subscribe_event)
- return v4l2_event_init(fh);
-
- fh->events = NULL;
-
- return 0;
+ init_waitqueue_head(&fh->wait);
+ INIT_LIST_HEAD(&fh->available);
+ INIT_LIST_HEAD(&fh->subscribed);
+ fh->sequence = -1;
}
EXPORT_SYMBOL_GPL(v4l2_fh_init);
@@ -91,10 +86,8 @@ void v4l2_fh_exit(struct v4l2_fh *fh)
{
if (fh->vdev == NULL)
return;
-
+ v4l2_event_unsubscribe_all(fh);
fh->vdev = NULL;
-
- v4l2_event_free(fh);
}
EXPORT_SYMBOL_GPL(v4l2_fh_exit);