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SubjectRe: [PATCH] coresight: etm4x: Modify core-commit of cpu to avoid the overflow of HiSilicon ETM
Hi Qi,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on linus/master]
[also build test WARNING on v5.10-rc5 next-20201123]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url: https://github.com/0day-ci/linux/commits/Qi-Liu/coresight-etm4x-Modify-core-commit-of-cpu-to-avoid-the-overflow-of-HiSilicon-ETM/20201123-213732
base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 418baf2c28f3473039f2f7377760bd8f6897ae18
config: arm64-allyesconfig (attached as .config)
compiler: aarch64-linux-gcc (GCC) 9.3.0
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://github.com/0day-ci/linux/commit/e21b077bb0d120583deb7cd6f1654d7c356175af
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Qi-Liu/coresight-etm4x-Modify-core-commit-of-cpu-to-avoid-the-overflow-of-HiSilicon-ETM/20201123-213732
git checkout e21b077bb0d120583deb7cd6f1654d7c356175af
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm64

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/hwtracing/coresight/coresight-etm4x-core.c:117:6: warning: no previous prototype for 'etm4_hisi_match_pid' [-Wmissing-prototypes]
117 | bool etm4_hisi_match_pid(unsigned int id)
| ^~~~~~~~~~~~~~~~~~~

vim +/etm4_hisi_match_pid +117 drivers/hwtracing/coresight/coresight-etm4x-core.c

116
> 117 bool etm4_hisi_match_pid(unsigned int id)
118 {
119 return (id & ETM4_AMBA_MASK) == HISI_HIP08_AMBA_ID;
120 }
121

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