tree: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git tty-testing head: 13b18d35909707571af9539f7731389fbf0feb31 commit: 6bf4e42f1d19de10800f4483b4bb7945aab283cb [42/52] serial: 8250: Add support for higher baud rates to Pericom chips reproduce: # apt-get install sparse # sparse version: v0.6.1-rc1-7-g2b96cd8-dirty git checkout 6bf4e42f1d19de10800f4483b4bb7945aab283cb make ARCH=x86_64 allmodconfig make C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp@xxxxxxxxx> sparse warnings: (new ones prefixed by >>) >> drivers/tty/serial/8250/8250_pci.c:1330:1: sparse: sparse: symbol 'pericom_do_set_divisor' was not declared. Should it be static? Please review and possibly fold the followup patch. --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation