linux-kernel - [PATCH] Input: use RCU_INIT

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Message-Id: <1462105540-8835-1-git-send-email-falakreyaz@gmail.com>
Date:	Sun,  1 May 2016 17:55:40 +0530
From:	Muhammad Falak R Wani <falakreyaz@...il.com>
To:	Dmitry Torokhov <dmitry.torokhov@...il.com>
Cc:	linux-input@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] Input: use RCU_INIT_POINTER() when NULLing.

It is safe to use RCU_INIT_POINTER() to NULL a pointer, instead of
rcu_assign_pointer().
This results in slightly smaller/faster code.

Signed-off-by: Muhammad Falak R Wani <falakreyaz@...il.com>
---
 drivers/input/input.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/input/input.c b/drivers/input/input.c
index b87ffbd..e59ac56 100644
--- a/drivers/input/input.c
+++ b/drivers/input/input.c
@@ -548,7 +548,7 @@ static void __input_release_device(struct input_handle *handle)
 	grabber = rcu_dereference_protected(dev->grab,
 					    lockdep_is_held(&dev->mutex));
 	if (grabber == handle) {
-		rcu_assign_pointer(dev->grab, NULL);
+		RCU_INIT_POINTER(dev->grab, NULL);
 		/* Make sure input_pass_event() notices that grab is gone */
 		synchronize_rcu();

-- 
1.9.1