From 4ed960b14d3b5fd14f1d9eb02f6d7e398317627a Mon Sep 17 00:00:00 2001
From: Andrew Morton <akpm@linux-foundation.org>
Date: Thu, 26 May 2011 16:25:15 -0700
Subject: [PATCH] Documentation/accounting/getdelays.c: handle sendto()
 failures

Fixes

  Documentation/accounting/getdelays.c: In function `get_family_id':
  Documentation/accounting/getdelays.c:172:14: warning: variable `rc' set but not used [-Wunused-but-set-variable]

Reported-by: "Justin P. Mattock" <justinmattock@gmail.com>
Cc: Balbir Singh <balbir@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
 Documentation/accounting/getdelays.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Documentation/accounting/getdelays.c b/Documentation/accounting/getdelays.c
index 16e16d57b9eb..fed225401dd2 100644
--- a/Documentation/accounting/getdelays.c
+++ b/Documentation/accounting/getdelays.c
@@ -177,6 +177,8 @@ static int get_family_id(int sd)
 	rc = send_cmd(sd, GENL_ID_CTRL, getpid(), CTRL_CMD_GETFAMILY,
 			CTRL_ATTR_FAMILY_NAME, (void *)name,
 			strlen(TASKSTATS_GENL_NAME)+1);
+	if (rc < 0)
+		return 0;	/* sendto() failure? */
 
 	rep_len = recv(sd, &ans, sizeof(ans), 0);
 	if (ans.n.nlmsg_type == NLMSG_ERROR ||
-- 
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