linux-kernel - [PATCH] SGI-XPC: Delete an unnecessary check before the function call "kfree"

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Message-ID: <54D27906.9070507@users.sourceforge.net>
Date:	Wed, 04 Feb 2015 20:54:46 +0100
From:	SF Markus Elfring <elfring@...rs.sourceforge.net>
To:	Cliff Whickman <cpw@....com>, Robin Holt <robinmholt@...il.com>
CC:	LKML <linux-kernel@...r.kernel.org>,
	kernel-janitors@...r.kernel.org,
	Julia Lawall <julia.lawall@...6.fr>
Subject: [PATCH] SGI-XPC: Delete an unnecessary check before the function
 call "kfree"

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Wed, 4 Feb 2015 20:50:31 +0100

The kfree() 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_partition.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/misc/sgi-xp/xpc_partition.c b/drivers/misc/sgi-xp/xpc_partition.c
index 6956f7e..0e32431 100644
--- a/drivers/misc/sgi-xp/xpc_partition.c
+++ b/drivers/misc/sgi-xp/xpc_partition.c
@@ -98,8 +98,7 @@ xpc_get_rsvd_page_pa(int nasid)
 			len = L1_CACHE_ALIGN(len);
 
 		if (len > buf_len) {
-			if (buf_base != NULL)
-				kfree(buf_base);
+			kfree(buf_base);
 			buf_len = L1_CACHE_ALIGN(len);
 			buf = xpc_kmalloc_cacheline_aligned(buf_len, GFP_KERNEL,
 							    &buf_base);
-- 
2.2.2

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