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-rw-r--r--drivers/media/video/uvc/uvc_ctrl.c5
-rw-r--r--drivers/media/video/v4l2-ctrls.c5
-rw-r--r--drivers/media/video/v4l2-event.c2
-rw-r--r--include/media/v4l2-event.h2
4 files changed, 10 insertions, 4 deletions
diff --git a/drivers/media/video/uvc/uvc_ctrl.c b/drivers/media/video/uvc/uvc_ctrl.c
index 28363b72ff8a..f3bd66c500b6 100644
--- a/drivers/media/video/uvc/uvc_ctrl.c
+++ b/drivers/media/video/uvc/uvc_ctrl.c
@@ -1250,7 +1250,7 @@ static void uvc_ctrl_send_events(struct uvc_fh *handle,
}
}
-static int uvc_ctrl_add_event(struct v4l2_subscribed_event *sev)
+static int uvc_ctrl_add_event(struct v4l2_subscribed_event *sev, unsigned elems)
{
struct uvc_fh *handle = container_of(sev->fh, struct uvc_fh, vfh);
struct uvc_control_mapping *mapping;
@@ -1278,6 +1278,9 @@ static int uvc_ctrl_add_event(struct v4l2_subscribed_event *sev)
uvc_ctrl_fill_event(handle->chain, &ev, ctrl, mapping, val,
changes);
+ /* Mark the queue as active, allowing this initial
+ event to be accepted. */
+ sev->elems = elems;
v4l2_event_queue_fh(sev->fh, &ev);
}
diff --git a/drivers/media/video/v4l2-ctrls.c b/drivers/media/video/v4l2-ctrls.c
index a5fbace4c059..9abd9abd4502 100644
--- a/drivers/media/video/v4l2-ctrls.c
+++ b/drivers/media/video/v4l2-ctrls.c
@@ -2559,7 +2559,7 @@ int v4l2_ctrl_s_ctrl(struct v4l2_ctrl *ctrl, s32 val)
}
EXPORT_SYMBOL(v4l2_ctrl_s_ctrl);
-static int v4l2_ctrl_add_event(struct v4l2_subscribed_event *sev)
+static int v4l2_ctrl_add_event(struct v4l2_subscribed_event *sev, unsigned elems)
{
struct v4l2_ctrl *ctrl = v4l2_ctrl_find(sev->fh->ctrl_handler, sev->id);
@@ -2576,6 +2576,9 @@ static int v4l2_ctrl_add_event(struct v4l2_subscribed_event *sev)
if (!(ctrl->flags & V4L2_CTRL_FLAG_WRITE_ONLY))
changes |= V4L2_EVENT_CTRL_CH_VALUE;
fill_event(&ev, ctrl, changes);
+ /* Mark the queue as active, allowing this initial
+ event to be accepted. */
+ sev->elems = elems;
v4l2_event_queue_fh(sev->fh, &ev);
}
v4l2_ctrl_unlock(ctrl);
diff --git a/drivers/media/video/v4l2-event.c b/drivers/media/video/v4l2-event.c
index 60b4e2e9c874..ef2a33c94045 100644
--- a/drivers/media/video/v4l2-event.c
+++ b/drivers/media/video/v4l2-event.c
@@ -239,7 +239,7 @@ int v4l2_event_subscribe(struct v4l2_fh *fh,
}
if (sev->ops && sev->ops->add) {
- int ret = sev->ops->add(sev);
+ int ret = sev->ops->add(sev, elems);
if (ret) {
sev->ops = NULL;
v4l2_event_unsubscribe(fh, sub);
diff --git a/include/media/v4l2-event.h b/include/media/v4l2-event.h
index 88fa9a1e0df3..2885a810a128 100644
--- a/include/media/v4l2-event.h
+++ b/include/media/v4l2-event.h
@@ -85,7 +85,7 @@ struct v4l2_kevent {
* @merge: Optional callback that can merge event 'old' into event 'new'.
*/
struct v4l2_subscribed_event_ops {
- int (*add)(struct v4l2_subscribed_event *sev);
+ int (*add)(struct v4l2_subscribed_event *sev, unsigned elems);
void (*del)(struct v4l2_subscribed_event *sev);
void (*replace)(struct v4l2_event *old, const struct v4l2_event *new);
void (*merge)(const struct v4l2_event *old, struct v4l2_event *new);