Re: [PATCH tty-next 2/2] serial: 8250: add driver for NI UARTs

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

Hi Brenda,

I love your patch! Perhaps something to improve:

[auto build test WARNING on tty/tty-testing]
[also build test WARNING on tty/tty-next tty/tty-linus linus/master v6.3-rc4 next-20230330]
[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/Brenda-Streiff/serial-8250-add-driver-for-NI-UARTs/20230330-010726
base:   https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git tty-testing
patch link:    https://lore.kernel.org/r/20230329154235.615349-3-brenda.streiff%40ni.com
patch subject: [PATCH tty-next 2/2] serial: 8250: add driver for NI UARTs
config: powerpc-allyesconfig (https://download.01.org/0day-ci/archive/20230330/202303301456.qfo36qC0-lkp@intel.com/config)
compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project 67409911353323ca5edf2049ef0df54132fa1ca7)
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
        # install powerpc cross compiling tool for clang build
        # apt-get install binutils-powerpc-linux-gnu
        # https://github.com/intel-lab-lkp/linux/commit/6c50983e6760b2db288e3f8b7254cea537c0f052
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Brenda-Streiff/serial-8250-add-driver-for-NI-UARTs/20230330-010726
        git checkout 6c50983e6760b2db288e3f8b7254cea537c0f052
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=powerpc olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=powerpc SHELL=/bin/bash drivers/tty/serial/8250/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202303301456.qfo36qC0-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/tty/serial/8250/8250_ni.c:423:36: warning: unused variable 'ni16550_acpi_match' [-Wunused-const-variable]
   static const struct acpi_device_id ni16550_acpi_match[] = {
                                      ^
   1 warning generated.


vim +/ni16550_acpi_match +423 drivers/tty/serial/8250/8250_ni.c

   422	
 > 423	static const struct acpi_device_id ni16550_acpi_match[] = {
   424		{ "NIC7750",	(kernel_ulong_t)&nic7750 },
   425		{ "NIC7772",	(kernel_ulong_t)&nic7772 },
   426		{ "NIC792B",	(kernel_ulong_t)&nic792b },
   427		{ "NIC7A69",	(kernel_ulong_t)&nic7a69 },
   428		{ },
   429	};
   430	MODULE_DEVICE_TABLE(acpi, ni16550_acpi_match);
   431	

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https://github.com/intel/lkp-tests