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From: kernel test robot <lkp@intel.com>
To: Arnd Bergmann <arnd@arndb.de>
Cc: kbuild-all@lists.01.org, linux-kernel@vger.kernel.org,
	Krzysztof Kozlowski <krzk@kernel.org>
Subject: drivers/soc/samsung/s3c-pm-debug.c:30:2: warning: function 's3c_pm_dbg' might be a candidate for 'gnu_printf' format attribute
Date: Sun, 25 Jul 2021 10:20:32 +0800	[thread overview]
Message-ID: <202107251026.l8ZwCTiR-lkp@intel.com> (raw)

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Hi Arnd,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   d8079fac168168b25677dc16c00ffaf9fb7df723
commit: 17132da70eb766785b9b4677bacce18cc11ea442 ARM: samsung: move pm check code to drivers/soc
date:   11 months ago
config: arm-randconfig-r003-20210725 (attached as .config)
compiler: arm-linux-gnueabi-gcc (GCC) 10.3.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=17132da70eb766785b9b4677bacce18cc11ea442
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 17132da70eb766785b9b4677bacce18cc11ea442
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-10.3.0 make.cross ARCH=arm 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

   drivers/soc/samsung/s3c-pm-debug.c: In function 's3c_pm_dbg':
>> drivers/soc/samsung/s3c-pm-debug.c:30:2: warning: function 's3c_pm_dbg' might be a candidate for 'gnu_printf' format attribute [-Wsuggest-attribute=format]
      30 |  vsnprintf(buff, sizeof(buff), fmt, va);
         |  ^~~~~~~~~


vim +30 drivers/soc/samsung/s3c-pm-debug.c

72551f6cf13e2f arch/arm/plat-samsung/pm-debug.c Tomasz Figa 2014-03-18  23  
72551f6cf13e2f arch/arm/plat-samsung/pm-debug.c Tomasz Figa 2014-03-18  24  void s3c_pm_dbg(const char *fmt, ...)
72551f6cf13e2f arch/arm/plat-samsung/pm-debug.c Tomasz Figa 2014-03-18  25  {
72551f6cf13e2f arch/arm/plat-samsung/pm-debug.c Tomasz Figa 2014-03-18  26  	va_list va;
72551f6cf13e2f arch/arm/plat-samsung/pm-debug.c Tomasz Figa 2014-03-18  27  	char buff[256];
72551f6cf13e2f arch/arm/plat-samsung/pm-debug.c Tomasz Figa 2014-03-18  28  
72551f6cf13e2f arch/arm/plat-samsung/pm-debug.c Tomasz Figa 2014-03-18  29  	va_start(va, fmt);
72551f6cf13e2f arch/arm/plat-samsung/pm-debug.c Tomasz Figa 2014-03-18 @30  	vsnprintf(buff, sizeof(buff), fmt, va);
72551f6cf13e2f arch/arm/plat-samsung/pm-debug.c Tomasz Figa 2014-03-18  31  	va_end(va);
72551f6cf13e2f arch/arm/plat-samsung/pm-debug.c Tomasz Figa 2014-03-18  32  
72551f6cf13e2f arch/arm/plat-samsung/pm-debug.c Tomasz Figa 2014-03-18  33  	printascii(buff);
72551f6cf13e2f arch/arm/plat-samsung/pm-debug.c Tomasz Figa 2014-03-18  34  }
72551f6cf13e2f arch/arm/plat-samsung/pm-debug.c Tomasz Figa 2014-03-18  35  

:::::: The code at line 30 was first introduced by commit
:::::: 72551f6cf13e2f3a1d273b7007b5d7d7fd69c554 ARM: SAMSUNG: Move Samsung PM debug code into separate file

:::::: TO: Tomasz Figa <t.figa@samsung.com>
:::::: CC: Kukjin Kim <kgene.kim@samsung.com>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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             reply	other threads:[~2021-07-25  2:21 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-25  2:20 kernel test robot [this message]
  -- strict thread matches above, loose matches on Subject: below --
2021-08-11  4:30 drivers/soc/samsung/s3c-pm-debug.c:30:2: warning: function 's3c_pm_dbg' might be a candidate for 'gnu_printf' format attribute kernel test robot
2021-06-21 21:25 kernel test robot
2021-06-10  0:32 kernel test robot
2021-04-08  9:22 kernel test robot
2021-03-02  1:48 kernel test robot
2021-02-21  7:18 kernel test robot

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