linux-kernel - [PATCH] cpumask.h: silence warning with -Wsign-compare

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Message-ID: <20140501192916.GA6495@oc3347516403.ibm.com>
Date:	Thu, 1 May 2014 14:29:17 -0500
From:	Brian W Hart <hartb@...ux.vnet.ibm.com>
To:	tj@...nel.org, rusty@...stcorp.com.au,
	linux-kernel@...r.kernel.org, trivial@...nel.org
Subject: [PATCH] cpumask.h: silence warning with -Wsign-compare

Silence the warning when building with -Wsign-compare when cpumask.h
is included:

include/linux/cpumask.h: In function ‘cpumask_parse’:
include/linux/cpumask.h:603:26: warning: signed and unsigned type in conditional expression [-Wsign-compare]
  int len = nl ? nl - buf : strlen(buf);
                          ^

Signed-off-by: Brian W Hart <hartb@...ux.vnet.ibm.com>
---
Compile tested only.

 include/linux/cpumask.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/cpumask.h b/include/linux/cpumask.h
index d08e4d2..0928ce7 100644
--- a/include/linux/cpumask.h
+++ b/include/linux/cpumask.h
@@ -600,7 +600,7 @@ static inline int cpulist_scnprintf(char *buf, int len,
 static inline int cpumask_parse(const char *buf, struct cpumask *dstp)
 {
 	char *nl = strchr(buf, '\n');
-	int len = nl ? nl - buf : strlen(buf);
+	int len = nl ? nl - buf : (int)strlen(buf);
 
 	return bitmap_parse(buf, len, cpumask_bits(dstp), nr_cpumask_bits);
 }

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