Re: [PATCH V5 04/26] coresight: etm3x: splitting struct etm_drvdata

From: kbuild test robot
Date: Mon Nov 30 2015 - 01:56:02 EST


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);

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