drivers/pinctrl/pinctrl-mcp23s08.c:1: warning: no structured comments found

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   98b1cc82c4affc16f5598d4fa14b1858671b2263
commit: d8f4494e70ae5fef159719bfbb6abedc53619bf1 pinctrl: mcp23s08: drop comment about missing irq support
date:   7 years ago
config: i386-randconfig-002-20231120 (https://download.01.org/0day-ci/archive/20231122/202311220421.xKye7ZRO-lkp@xxxxxxxxx/config)
compiler: gcc-7 (Ubuntu 7.5.0-6ubuntu2) 7.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231122/202311220421.xKye7ZRO-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/202311220421.xKye7ZRO-lkp@xxxxxxxxx/

All warnings (new ones prefixed by >>):

   drivers/pinctrl/pinctrl-mcp23s08.c: In function 'mcp_pinconf_set':
   drivers/pinctrl/pinctrl-mcp23s08.c:282:6: warning: variable 'val' set but not used [-Wunused-but-set-variable]
     u16 val;
         ^~~
   drivers/pinctrl/pinctrl-mcp23s08.c:281:11: warning: variable 'mask' set but not used [-Wunused-but-set-variable]
     u32 arg, mask;
              ^~~~
>> drivers/pinctrl/pinctrl-mcp23s08.c:1: warning: no structured comments found


vim +1 drivers/pinctrl/pinctrl-mcp23s08.c

   > 1	/* MCP23S08 SPI/I2C GPIO driver */
     2	

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