Hi "Pali,

I love your patch! Yet something to improve:

[auto build test ERROR on robh/for-next]
[also build test ERROR on tty/tty-testing clk/clk-next linus/master v5.13-rc7 next-20210624]
[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/Pali-Roh-r/serial-mvebu-uart-Fixes-and-new-support-for-higher-baudrates/20210625-065146
base:   https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git for-next
config: m68k-allmodconfig (attached as .config)
compiler: m68k-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/747483a6b8f2de98afe461dbf91227404a8e2e81
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Pali-Roh-r/serial-mvebu-uart-Fixes-and-new-support-for-higher-baudrates/20210625-065146
        git checkout 747483a6b8f2de98afe461dbf91227404a8e2e81
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=m68k 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   m68k-linux-ld: drivers/tty/serial/mvebu-uart.o: in function `mvebu_uart_clock_prepare':
   mvebu-uart.c:(.text+0x6d0): undefined reference to `__udivdi3'
>> m68k-linux-ld: mvebu-uart.c:(.text+0x78c): undefined reference to `__udivdi3'

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