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authorAlban Bedel <albeu@free.fr>2014-11-08 12:39:39 +0100
committerRalf Baechle <ralf@linux-mips.org>2014-11-24 07:45:26 +0100
commit484c344985ddf8e9ed12b8cf540eba0b1d869236 (patch)
tree5008ab8a2aeeb4c482607660ba36bb5ad5348bf3 /arch/mips/fw
parent4a792e56cfdbe000d01c01ce356d13f39f5494e7 (diff)
downloadlinux-484c344985ddf8e9ed12b8cf540eba0b1d869236.tar.gz
MIPS: FW: Use kstrtoul() to parse unsigned long from the fw environment
Fix some value corruptions with values that can't be represented in a
signed long.

Signed-off-by: Alban Bedel <albeu@free.fr>
Cc: linux-kernel@vger.kernel.org
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/8358/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/fw')
-rw-r--r--arch/mips/fw/lib/cmdline.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/arch/mips/fw/lib/cmdline.c b/arch/mips/fw/lib/cmdline.c
index a0c361e6a5d2..6ecda64ad184 100644
--- a/arch/mips/fw/lib/cmdline.c
+++ b/arch/mips/fw/lib/cmdline.c
@@ -88,13 +88,13 @@ unsigned long fw_getenvl(char *envname)
 {
 	unsigned long envl = 0UL;
 	char *str;
-	long val;
 	int tmp;
 
 	str = fw_getenv(envname);
 	if (str) {
-		tmp = kstrtol(str, 0, &val);
-		envl = (unsigned long)val;
+		tmp = kstrtoul(str, 0, &envl);
+		if (tmp)
+			envl = 0;
 	}
 
 	return envl;