Re: [PATCH] serial: 8250_mid: wait for LSR tx empty before setting termios

[kernel test robot <lkp@intel.com>]

Hi Tate,

kernel test robot noticed the following build errors:

[auto build test ERROR on tty/tty-testing]
[also build test ERROR on tty/tty-next tty/tty-linus usb/usb-testing usb/usb-next usb/usb-linus linus/master next-20260828]
[cannot apply to v7.2]
[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#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Tate-Whiteberg/serial-8250_mid-wait-for-LSR-tx-empty-before-setting-termios/20260828-144517
base:   https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git tty-testing
patch link:    https://lore.kernel.org/r/20260828144617.1210599-2-whiteberg%40arista.com
patch subject: [PATCH] serial: 8250_mid: wait for LSR tx empty before setting termios
config: powerpc64-randconfig-001-20260829 (https://download.01.org/0day-ci/archive/20260831/202608310138.0uIPCjfP-lkp@intel.com/config)
compiler: powerpc64-linux-gcc (GCC) 13.4.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260831/202608310138.0uIPCjfP-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202608310138.0uIPCjfP-lkp@intel.com/

All errors (new ones prefixed by >>, old ones prefixed by <<):

>> ERROR: modpost: drivers/tty/serial/8250/8250_mid.ko: module uses symbol 'serial8250_wait_for_xmitr' from namespace 'SERIAL_8250', but does not import it.

--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki