Re: [PATCH] gpio: driver for the NXP 74HC153 chip

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

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Hi Mauri,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on gpio/for-next]
[also build test WARNING on v5.11 next-20210223]
[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/Mauri-Sandberg/gpio-driver-for-the-NXP-74HC153-chip/20210224-040026
base:   https://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio.git for-next
config: arm64-allyesconfig (attached as .config)
compiler: aarch64-linux-gcc (GCC) 9.3.0
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/04cf14b1b4dad0702e35202513962925fdf8113f
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Mauri-Sandberg/gpio-driver-for-the-NXP-74HC153-chip/20210224-040026
        git checkout 04cf14b1b4dad0702e35202513962925fdf8113f
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm64 

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 >>):

   drivers/gpio/gpio-nxp-74hc153.c: In function 'nxp_74hc153_get_value':
>> drivers/gpio/gpio-nxp-74hc153.c:75:36: warning: variable 'pdata' set but not used [-Wunused-but-set-variable]
      75 |  struct nxp_74hc153_platform_data *pdata;
         |                                    ^~~~~


vim +/pdata +75 drivers/gpio/gpio-nxp-74hc153.c

    71	
    72	static int nxp_74hc153_get_value(struct gpio_chip *gc, unsigned offset)
    73	{
    74		struct nxp_74hc153_chip *nxp;
  > 75		struct nxp_74hc153_platform_data *pdata;
    76		unsigned s0;
    77		unsigned s1;
    78		unsigned pin;
    79		int ret;
    80	
    81		nxp = gpio_to_nxp(gc);
    82		pdata = nxp->parent->platform_data;
    83	
    84		s0 = !!(offset & NXP_74HC153_S0_MASK);
    85		s1 = !!(offset & NXP_74HC153_S1_MASK);
    86		pin = (offset & NXP_74HC153_BANK_MASK) ? nxp->config.gpio_pin_2y
    87		                                       : nxp->config.gpio_pin_1y;
    88	
    89		mutex_lock(&nxp->lock);
    90		gpio_set_value(nxp->config.gpio_pin_s0, s0);
    91		gpio_set_value(nxp->config.gpio_pin_s1, s1);
    92		ret = gpio_get_value(pin);
    93		mutex_unlock(&nxp->lock);
    94	
    95		return ret;
    96	}
    97	

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

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