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From f12f0b1d3fdb5acbe1490c0cbf086a7b250e0d12 Mon Sep 17 00:00:00 2001
From: Vladimir Barinov <vladimir.barinov@cogentembedded.com>
Date: Sun, 14 May 2017 15:23:57 +0300
Subject: [PATCH 014/122] Revert "[media] v4l2-async: remove unneeded
 .registered_async callback"

This reverts commit a53d2f299dc83340c695e153363a2f21641d5f58.
---
 drivers/media/v4l2-core/v4l2-async.c | 4 ++++
 include/media/v4l2-subdev.h          | 3 +++
 2 files changed, 7 insertions(+)

diff --git a/drivers/media/v4l2-core/v4l2-async.c b/drivers/media/v4l2-core/v4l2-async.c
index a7c3464..7b6c556 100644
--- a/drivers/media/v4l2-core/v4l2-async.c
+++ b/drivers/media/v4l2-core/v4l2-async.c
@@ -225,6 +225,10 @@ static int v4l2_async_match_notify(struct v4l2_async_notifier *notifier,
 	/* Move from the global subdevice list to notifier's done */
 	list_move(&sd->async_list, &notifier->done);
 
+	ret = v4l2_subdev_call(sd, core, registered_async);
+	if (ret < 0 && ret != -ENOIOCTLCMD)
+		return ret;
+
 	/*
 	 * See if the sub-device has a notifier. If not, return here.
 	 */
diff --git a/include/media/v4l2-subdev.h b/include/media/v4l2-subdev.h
index ec399c7..c7f2a77 100644
--- a/include/media/v4l2-subdev.h
+++ b/include/media/v4l2-subdev.h
@@ -184,6 +184,8 @@ struct v4l2_subdev_io_pin_config {
  *		     for it to be warned when the value of a control changes.
  *
  * @unsubscribe_event: remove event subscription from the control framework.
+ *
+ * @registered_async: the subdevice has been registered async.
  */
 struct v4l2_subdev_core_ops {
 	int (*log_status)(struct v4l2_subdev *sd);
@@ -209,6 +211,7 @@ struct v4l2_subdev_core_ops {
 			       struct v4l2_event_subscription *sub);
 	int (*unsubscribe_event)(struct v4l2_subdev *sd, struct v4l2_fh *fh,
 				 struct v4l2_event_subscription *sub);
+	int (*registered_async)(struct v4l2_subdev *sd);
 };
 
 /**
-- 
2.7.4