Re: [PATCH v2 2/3] tty: serial: 8250: Add loongson uart driver support

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

Hi,

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 robh/for-next usb/usb-testing usb/usb-next usb/usb-linus linus/master v6.11-rc1 next-20240802]
[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/zhenghaowei-loongson-cn/tty-serial-8250-Add-loongson-uart-driver-support/20240804-145047
base:   https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git tty-testing
patch link:    https://lore.kernel.org/r/20240804063834.70022-2-zhenghaowei%40loongson.cn
patch subject: [PATCH v2 2/3] tty: serial: 8250: Add loongson uart driver support
config: mips-lemote2f_defconfig (https://download.01.org/0day-ci/archive/20240805/202408050031.dYYkSqDM-lkp@intel.com/config)
compiler: mips64el-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240805/202408050031.dYYkSqDM-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/202408050031.dYYkSqDM-lkp@intel.com/

All error/warnings (new ones prefixed by >>):

>> drivers/tty/serial/8250/8250_loongson.c:200:35: error: implicit declaration of function 'of_match_ptr' [-Werror=implicit-function-declaration]
     200 |                 .of_match_table = of_match_ptr(of_platform_serial_table),
         |                                   ^~~~~~~~~~~~
>> drivers/tty/serial/8250/8250_loongson.c:200:35: warning: initialization of 'const struct of_device_id *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
   drivers/tty/serial/8250/8250_loongson.c:200:35: note: (near initialization for 'loongson_uart_driver.driver.of_match_table')
>> drivers/tty/serial/8250/8250_loongson.c:200:35: error: initializer element is not constant
   drivers/tty/serial/8250/8250_loongson.c:200:35: note: (near initialization for 'loongson_uart_driver.driver.of_match_table')
   cc1: some warnings being treated as errors


vim +/of_match_ptr +200 drivers/tty/serial/8250/8250_loongson.c

   193	
   194	static struct platform_driver loongson_uart_driver = {
   195		.probe = loongson_uart_probe,
   196		.remove = loongson_uart_remove,
   197		.driver = {
   198			.name = "ls7a-uart",
   199			.pm = &loongson_uart_pm_ops,
 > 200			.of_match_table = of_match_ptr(of_platform_serial_table),
   201		},
   202	};
   203	

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