From: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Date: Fri, 30 Nov 2018 02:11:07 +0000 (-0500)
Subject: media: v4l2: async: remove locking when initializing async notifier
X-Git-Tag: v5.15~7385^2~51
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=da2c94c8f9739e4099ea3cfefc208fc721b22a9c;p=platform%2Fkernel%2Flinux-starfive.git

media: v4l2: async: remove locking when initializing async notifier

There is no need to hold the list_lock when initializing the local
asd_list of a notifier. Remove the lock handling to simplify the code
and remove a potential LOCKDEP warning.

Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Reported-by: Jacopo Mondi <jacopo@jmondi.org>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
---

diff --git a/drivers/media/v4l2-core/v4l2-async.c b/drivers/media/v4l2-core/v4l2-async.c
index a6d9137..15b0c44a 100644
--- a/drivers/media/v4l2-core/v4l2-async.c
+++ b/drivers/media/v4l2-core/v4l2-async.c
@@ -424,11 +424,7 @@ static int v4l2_async_notifier_asd_valid(struct v4l2_async_notifier *notifier,
 
 void v4l2_async_notifier_init(struct v4l2_async_notifier *notifier)
 {
-	mutex_lock(&list_lock);
-
 	INIT_LIST_HEAD(&notifier->asd_list);
-
-	mutex_unlock(&list_lock);
 }
 EXPORT_SYMBOL(v4l2_async_notifier_init);