Hi Stefan, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on linuxtv-media/master] [also build test WARNING on v5.9-rc6 next-20200924] [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/Stefan-Riedmueller/media-mt9p031-Add-support-for-8-bit-and-10-bit-formats/20200925-155251 base: git://linuxtv.org/media_tree.git master config: arc-allyesconfig (attached as .config) compiler: arceb-elf-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/1863bce6d7b4791c048a25ec07ff8aec8b4847cf git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Stefan-Riedmueller/media-mt9p031-Add-support-for-8-bit-and-10-bit-formats/20200925-155251 git checkout 1863bce6d7b4791c048a25ec07ff8aec8b4847cf # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arc If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): >> drivers/media/i2c/mt9p031.c:166:8: warning: type qualifiers ignored on function return type [-Wignored-qualifiers] 166 | static const u32 mt9p031_find_datafmt(struct mt9p031 *mt9p031, u32 code) | ^~~~~ vim +166 drivers/media/i2c/mt9p031.c 165 > 166 static const u32 mt9p031_find_datafmt(struct mt9p031 *mt9p031, u32 code) 167 { 168 int i; 169 170 for (i = 0; i < mt9p031->num_fmts; i++) 171 if (mt9p031->fmts[i] == code) 172 return mt9p031->fmts[i]; 173 174 return mt9p031->fmts[mt9p031->num_fmts-1]; 175 } 176 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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