Hi Chia-Wei, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on joel-aspeed/for-next] [also build test WARNING on v5.14-rc5 next-20210813] [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/Chia-Wei-Wang/aspeed-Add-LPC-mailbox-support/20210813-134908 base: https://git.kernel.org/pub/scm/linux/kernel/git/joel/aspeed.git for-next config: h8300-randconfig-s031-20210816 (attached as .config) compiler: h8300-linux-gcc (GCC) 11.2.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # apt-get install sparse # sparse version: v0.6.3-348-gf0e6938b-dirty # https://github.com/0day-ci/linux/commit/72c5a69dc779f5b4af59eb6d47d0e1086be814af git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Chia-Wei-Wang/aspeed-Add-LPC-mailbox-support/20210813-134908 git checkout 72c5a69dc779f5b4af59eb6d47d0e1086be814af # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=h8300 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> sparse warnings: (new ones prefixed by >>) >> drivers/soc/aspeed/aspeed-lpc-mbox.c:240:27: sparse: sparse: incorrect type in initializer (different base types) @@ expected restricted __poll_t ( *poll )( ... ) @@ got unsigned int ( * )( ... ) @@ drivers/soc/aspeed/aspeed-lpc-mbox.c:240:27: sparse: expected restricted __poll_t ( *poll )( ... ) drivers/soc/aspeed/aspeed-lpc-mbox.c:240:27: sparse: got unsigned int ( * )( ... ) vim +240 drivers/soc/aspeed/aspeed-lpc-mbox.c 232 233 static const struct file_operations aspeed_mbox_fops = { 234 .owner = THIS_MODULE, 235 .llseek = no_seek_end_llseek, 236 .read = aspeed_mbox_read, 237 .write = aspeed_mbox_write, 238 .open = aspeed_mbox_open, 239 .release = aspeed_mbox_release, > 240 .poll = aspeed_mbox_poll, 241 .unlocked_ioctl = aspeed_mbox_ioctl, 242 }; 243 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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