linux-kernel - [PATCH] SGI-XPC: Delete unnecessary checks before unregister_sysctl

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Message-ID: <563C6FAE.3060606@users.sourceforge.net>
Date:	Fri, 6 Nov 2015 10:15:26 +0100
From:	SF Markus Elfring <elfring@...rs.sourceforge.net>
To:	linux-kernel@...r.kernel.org, Cliff Whickman <cpw@....com>,
	Robin Holt <robinmholt@...il.com>
Cc:	kernel-janitors@...r.kernel.org,
	Julia Lawall <julia.lawall@...6.fr>
Subject: [PATCH] SGI-XPC: Delete unnecessary checks before
 unregister_sysctl_table()

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Fri, 6 Nov 2015 10:08:46 +0100

The unregister_sysctl_table() 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>
---
 drivers/misc/sgi-xp/xpc_main.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/drivers/misc/sgi-xp/xpc_main.c b/drivers/misc/sgi-xp/xpc_main.c
index 7f32712..8d4fcac 100644
--- a/drivers/misc/sgi-xp/xpc_main.c
+++ b/drivers/misc/sgi-xp/xpc_main.c
@@ -1046,9 +1046,7 @@ xpc_do_exit(enum xp_retval reason)
 	/* clear the interface to XPC's functions */
 	xpc_clear_interface();
 
-	if (xpc_sysctl)
-		unregister_sysctl_table(xpc_sysctl);
-
+	unregister_sysctl_table(xpc_sysctl);
 	xpc_teardown_partitions();
 
 	if (is_shub())
@@ -1331,9 +1329,7 @@ out_3:
 	(void)unregister_die_notifier(&xpc_die_notifier);
 	(void)unregister_reboot_notifier(&xpc_reboot_notifier);
 out_2:
-	if (xpc_sysctl)
-		unregister_sysctl_table(xpc_sysctl);
-
+	unregister_sysctl_table(xpc_sysctl);
 	xpc_teardown_partitions();
 out_1:
 	if (is_shub())
-- 
2.6.2

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