netdev - [PATCH] netlink: Delete an unnecessary check before the function call "module

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Date:	Thu, 02 Jul 2015 18:45:53 +0200
From:	SF Markus Elfring <elfring@...rs.sourceforge.net>
To:	"David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org
CC:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	kernel-janitors <kernel-janitors@...r.kernel.org>,
	Julia Lawall <julia.lawall@...6.fr>
Subject: [PATCH] netlink: Delete an unnecessary check before the function
 call "module_put"

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Thu, 2 Jul 2015 18:38:12 +0200

The module_put() function tests whether its argument is NULL and then
returns immediately. Thus the test around the call is not needed.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 net/netlink/af_netlink.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index dea9253..9a0ae71 100644
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -158,7 +158,7 @@ static int __netlink_remove_tap(struct netlink_tap *nt)
 out:
 	spin_unlock(&netlink_tap_lock);
 
-	if (found && nt->module)
+	if (found)
 		module_put(nt->module);
 
 	return found ? 0 : -ENODEV;
-- 
2.4.5

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