From: Arnd Bergmann <arnd@arndb.de>
Date: Mon, 30 Apr 2012 16:53:11 +0000 (+0000)
Subject: ARM: pxa: Wunused-result warning in viper board file
X-Git-Tag: next-20121005~10^2~1^2~17
X-Git-Url: https://git.kernelconcepts.de/?a=commitdiff_plain;h=5f0cc6d16c0572bf5e9e65b6133ac415268c0720;p=karo-tx-linux.git

ARM: pxa: Wunused-result warning in viper board file

Calling kstrtoul requires checking the result. In case of
the viper_tpm_setup function, let's fail the __setup function
if the number was invalid.

Without this patch, building viper_defconfig results in:

arch/arm/mach-pxa/viper.c: In function 'viper_tpm_setup':
arch/arm/mach-pxa/viper.c:771:10: warning: ignoring return value of 'kstrtoul', declared with attribute warn_unused_result [-Wunused-result]

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Marc Zyngier <maz@misterjones.org>
Cc: Haojian Zhuang <haojian.zhuang@marvell.com>
Cc: Eric Miao <eric.y.miao@gmail.com>
---

diff --git a/arch/arm/mach-pxa/viper.c b/arch/arm/mach-pxa/viper.c
index 130379fb9d0f..ac733e91f3e4 100644
--- a/arch/arm/mach-pxa/viper.c
+++ b/arch/arm/mach-pxa/viper.c
@@ -768,8 +768,7 @@ static unsigned long viper_tpm;
 
 static int __init viper_tpm_setup(char *str)
 {
-	strict_strtoul(str, 10, &viper_tpm);
-	return 1;
+	return strict_strtoul(str, 10, &viper_tpm) >= 0;
 }
 
 __setup("tpm=", viper_tpm_setup);