linux-kernel - [PATCH] staging/lustre/lnet: Fix potential uninitialized variable warning

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Date:	Mon, 11 Aug 2014 22:18:29 -0400
From:	Oleg Drokin <green@...uxhacker.ru>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-kernel@...r.kernel.org, devel@...verdev.osuosl.org
Cc:	Oleg Drokin <green@...uxhacker.ru>
Subject: [PATCH] staging/lustre/lnet: Fix potential uninitialized variable warning

Greg reports that with one of the patches in his queue
there's now an unused variable warning in lnet_parse_ip2nets
for ipaddrs variable.
Apparently the warning is a false positive as in all cases where
lnet_ipaddr_enumerate can return without setting ipaddrs to something
a negative return value is returned that is then checked
before we actually use ipaddrs.

Assign ipaddrs to NULL to quiet this.

Signed-off-by: Oleg Drokin <green@...uxhacker.ru>
---
 drivers/staging/lustre/lnet/lnet/config.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/staging/lustre/lnet/lnet/config.c b/drivers/staging/lustre/lnet/lnet/config.c
index 7c8b947..d77aa31 100644
--- a/drivers/staging/lustre/lnet/lnet/config.c
+++ b/drivers/staging/lustre/lnet/lnet/config.c
@@ -1187,7 +1187,7 @@ lnet_ipaddr_enumerate(__u32 **ipaddrsp)
 int
 lnet_parse_ip2nets(char **networksp, char *ip2nets)
 {
-	__u32     *ipaddrs;
+	__u32     *ipaddrs = NULL;
 	int	nip = lnet_ipaddr_enumerate(&ipaddrs);
 	int	rc;
 
-- 
1.9.0

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