linux-kernel - Re: [PATCH V5 04/26] coresight: etm3x: splitting struct etm

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Date:	Mon, 30 Nov 2015 14:54:32 +0800
From:	kbuild test robot <lkp@...el.com>
To:	Mathieu Poirier <mathieu.poirier@...aro.org>
Cc:	kbuild-all@...org, gregkh@...uxfoundation.org,
	alexander.shishkin@...ux.intel.com, zhang.chunyan@...aro.org,
	mike.leach@....com, tor@...com, al.grant@....com,
	pawel.moll@....com, fainelli@...adcom.com,
	linux-arm-kernel@...ts.infradead.org, linux-doc@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Mathieu Poirier <mathieu.poirier@...aro.org>
Subject: Re: [PATCH V5 04/26] coresight: etm3x: splitting struct etm_drvdata

Hi Mathieu,

[auto build test ERROR on: tip/perf/core]
[also build test ERROR on: v4.4-rc3 next-20151127]

url:    https://github.com/0day-ci/linux/commits/Mathieu-Poirier/Coresight-integration-with-perf/20151130-102706
config: arm-allyesconfig (attached as .config)
reproduce:
        wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        make.cross ARCH=arm 

Note: the linux-review/Mathieu-Poirier/Coresight-integration-with-perf/20151130-102706 HEAD c898ed8b47ed7662cd702f15ed57c520a826fbfb builds fine.
      It only hurts bisectibility.

All errors (new ones prefixed by >>):

   In file included from arch/arm/include/asm/bug.h:62:0,
                    from arch/arm/include/asm/div64.h:63,
                    from include/linux/kernel.h:136,
                    from drivers/hwtracing/coresight/coresight-etm3x.c:13:
   drivers/hwtracing/coresight/coresight-etm3x.c: In function 'etm_disable_hw':
>> drivers/hwtracing/coresight/coresight-etm3x.c:387:20: error: 'config' undeclared (first use in this function)
     if (WARN_ON_ONCE(!config))
                       ^
   include/asm-generic/bug.h:111:27: note: in definition of macro 'WARN_ON_ONCE'
     int __ret_warn_once = !!(condition);   \
                              ^
   drivers/hwtracing/coresight/coresight-etm3x.c:387:20: note: each undeclared identifier is reported only once for each function it appears in
     if (WARN_ON_ONCE(!config))
                       ^
   include/asm-generic/bug.h:111:27: note: in definition of macro 'WARN_ON_ONCE'
     int __ret_warn_once = !!(condition);   \
                              ^

vim +/config +387 drivers/hwtracing/coresight/coresight-etm3x.c

   381	
   382	static void etm_disable_hw(void *info)
   383	{
   384		int i;
   385		struct etm_drvdata *drvdata = info;
   386	
 > 387		if (WARN_ON_ONCE(!config))
   388			return;
   389	
   390		CS_UNLOCK(drvdata->base);

---
0-DAY kernel test infrastructure                Open Source Technology Center
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