linux-kernel - [tip:WIP.sched/cpusallowed 6/13] arch/sparc/kernel/sysfs.c:134:32: error: 'val' undeclared

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Date:   Thu, 13 Apr 2017 08:40:47 +0800
From:   kbuild test robot <fengguang.wu@...el.com>
To:     Thomas Gleixner <tglx@...utronix.de>
Cc:     kbuild-all@...org, linux-kernel@...r.kernel.org, tipbuild@...or.com
Subject: [tip:WIP.sched/cpusallowed 6/13] arch/sparc/kernel/sysfs.c:134:32:
 error: 'val' undeclared

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git WIP.sched/cpusallowed
head:   4ba98c7ec4094a9123d0d6aabb4497290207b518
commit: 283c753d4892b65301a831ef434b988e97269dae [6/13] sparc/sysfs: Use work instead of affinity games
config: sparc64-allyesconfig (attached as .config)
compiler: sparc64-linux-gnu-gcc (Debian 6.1.1-9) 6.1.1 20160705
reproduce:
        wget https://raw.githubusercontent.com/01org/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout 283c753d4892b65301a831ef434b988e97269dae
        # save the attached .config to linux build tree
        make.cross ARCH=sparc64 

All errors (new ones prefixed by >>):

   arch/sparc/kernel/sysfs.c: In function 'store_mmustat_enable':
>> arch/sparc/kernel/sysfs.c:134:32: error: 'val' undeclared (first use in this function)
     int ret = sscanf(buf, "%lu", &val);
                                   ^~~
   arch/sparc/kernel/sysfs.c:134:32: note: each undeclared identifier is reported only once for each function it appears in

vim +/val +134 arch/sparc/kernel/sysfs.c

d887ab3a arch/sparc64/kernel/sysfs.c David Miller    2007-06-03  128  }
d887ab3a arch/sparc64/kernel/sysfs.c David Miller    2007-06-03  129  
8a25a2fd arch/sparc/kernel/sysfs.c   Kay Sievers     2011-12-21  130  static ssize_t store_mmustat_enable(struct device *s,
8a25a2fd arch/sparc/kernel/sysfs.c   Kay Sievers     2011-12-21  131  			struct device_attribute *attr, const char *buf,
4a0b2b4d arch/sparc64/kernel/sysfs.c Andi Kleen      2008-07-01  132  			size_t count)
d887ab3a arch/sparc64/kernel/sysfs.c David Miller    2007-06-03  133  {
8ecc1bad arch/sparc/kernel/sysfs.c   Toralf Förster  2014-05-19 @134  	int ret = sscanf(buf, "%lu", &val);
283c753d arch/sparc/kernel/sysfs.c   Thomas Gleixner 2017-04-06  135  	unsigned long val;
283c753d arch/sparc/kernel/sysfs.c   Thomas Gleixner 2017-04-06  136  	long err;
d887ab3a arch/sparc64/kernel/sysfs.c David Miller    2007-06-03  137  

:::::: The code at line 134 was first introduced by commit
:::::: 8ecc1bad4c9b485ceb47182d282980d0b0fe20ac sparc64: fix format string mismatch in arch/sparc/kernel/sysfs.c

:::::: TO: Toralf Förster <toralf.foerster@....de>
:::::: CC: David S. Miller <davem@...emloft.net>

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