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

[kernel test robot]

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-gpr_defconfig (https://download.01.org/0day-ci/archive/20240804/202408042241.zkkSuA60-lkp@xxxxxxxxx/config)
compiler: clang version 20.0.0git (https://github.com/llvm/llvm-project 423aec6573df4424f90555468128e17073ddc69e)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240804/202408042241.zkkSuA60-lkp@xxxxxxxxx/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@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202408042241.zkkSuA60-lkp@xxxxxxxxx/

All errors (new ones prefixed by >>):

   In file included from drivers/tty/serial/8250/8250_loongson.c:14:
   In file included from drivers/tty/serial/8250/8250.h:11:
   In file included from include/linux/serial_8250.h:11:
   In file included from include/linux/serial_core.h:16:
   In file included from include/linux/tty.h:11:
   In file included from include/linux/tty_port.h:5:
   In file included from include/linux/kfifo.h:40:
   In file included from include/linux/dma-mapping.h:11:
   In file included from include/linux/scatterlist.h:8:
   In file included from include/linux/mm.h:2228:
   include/linux/vmstat.h:514:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
     514 |         return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_"
         |                               ~~~~~~~~~~~ ^ ~~~
>> drivers/tty/serial/8250/8250_loongson.c:200:21: error: call to undeclared function 'of_match_ptr'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     200 |                 .of_match_table = of_match_ptr(of_platform_serial_table),
         |                                   ^
>> drivers/tty/serial/8250/8250_loongson.c:200:21: error: incompatible integer to pointer conversion initializing 'const struct of_device_id *' with an expression of type 'int' [-Wint-conversion]
     200 |                 .of_match_table = of_match_ptr(of_platform_serial_table),
         |                                   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> drivers/tty/serial/8250/8250_loongson.c:200:21: error: initializer element is not a compile-time constant
     200 |                 .of_match_table = of_match_ptr(of_platform_serial_table),
         |                                   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   1 warning and 3 errors generated.


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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