Hi Prathamesh,

I love your patch! Perhaps something to improve:

[auto build test WARNING on pinctrl/devel]
[also build test WARNING on tegra/for-next v5.14 next-20210831]
[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]

url:    https://github.com/0day-ci/linux/commits/Prathamesh-Shete/pinctrl-support-to-save-and-restore-GPIO-conf/20210831-133414
base:   https://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl.git devel
config: s390-allmodconfig (attached as .config)
compiler: s390-linux-gcc (GCC) 11.2.0
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
        # https://github.com/0day-ci/linux/commit/8c99cc4cd4b322e1a4dd6fb0e031a432ad768596
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Prathamesh-Shete/pinctrl-support-to-save-and-restore-GPIO-conf/20210831-133414
        git checkout 8c99cc4cd4b322e1a4dd6fb0e031a432ad768596
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=s390 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

   In file included from drivers/pinctrl/core.c:36:
>> drivers/pinctrl/pinmux.h:98:5: warning: no previous prototype for 'pinmux_gpio_save_config' [-Wmissing-prototypes]
      98 | int pinmux_gpio_save_config(struct pinctrl_dev *pctldev,
         |     ^~~~~~~~~~~~~~~~~~~~~~~
>> drivers/pinctrl/pinmux.h:104:5: warning: no previous prototype for 'pinmux_gpio_restore_config' [-Wmissing-prototypes]
     104 | int pinmux_gpio_restore_config(struct pinctrl_dev *pctldev,
         |     ^~~~~~~~~~~~~~~~~~~~~~~~~~


vim +/pinmux_gpio_save_config +98 drivers/pinctrl/pinmux.h

    97	
  > 98	int pinmux_gpio_save_config(struct pinctrl_dev *pctldev,
    99				    struct pinctrl_gpio_range *range,
   100				    unsigned pin)
   101	{
   102		return 0;
   103	}
 > 104	int pinmux_gpio_restore_config(struct pinctrl_dev *pctldev,
   105				       struct pinctrl_gpio_range *range,
   106				       unsigned pin)
   107	{
   108		return 0;
   109	}
   110	#endif
   111	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org