Re: [PATCH v5 3/5] iio: proximity: Add SX9324 support

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Hi Gwendal,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on jic23-iio/togreg]
[also build test WARNING on v5.16-rc4 next-20211208]
[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/Gwendal-Grignou/Expand-Semtech-SAR-Sensors-support/20211208-084635
base:   https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git togreg
config: arm-randconfig-c002-20211208 (https://download.01.org/0day-ci/archive/20211208/202112082214.pv3MKwkH-lkp@xxxxxxxxx/config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 097a1cb1d5ebb3a0ec4bcaed8ba3ff6a8e33c00a)
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
        # install arm cross compiling tool for clang build
        # apt-get install binutils-arm-linux-gnueabi
        # https://github.com/0day-ci/linux/commit/d02716a5c3a619239e594e6ba6af2ec38fd3de3d
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Gwendal-Grignou/Expand-Semtech-SAR-Sensors-support/20211208-084635
        git checkout d02716a5c3a619239e594e6ba6af2ec38fd3de3d
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash drivers/iio/proximity/

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

All warnings (new ones prefixed by >>):

>> drivers/iio/proximity/sx9324.c:166:9: warning: variable 'ret' set but not used [-Wunused-but-set-variable]
           int i, ret, pin_idx;
                  ^
   1 warning generated.


vim +/ret +166 drivers/iio/proximity/sx9324.c

   158	
   159	static ssize_t sx9324_phase_configuration_show(struct iio_dev *indio_dev,
   160						       uintptr_t private,
   161						       const struct iio_chan_spec *chan,
   162						       char *buf)
   163	{
   164		struct sx_common_data *data = iio_priv(indio_dev);
   165		unsigned int val;
 > 166		int i, ret, pin_idx;
   167		size_t len = 0;
   168	
   169		ret = regmap_read(data->regmap, SX9324_REG_AFE_PH0 + chan->channel, &val);
   170	
   171		for (i = 0; i < SX9324_NUM_PINS; i++) {
   172			pin_idx = (val & SX9324_REG_AFE_PH0_PIN_MASK(i)) >> (2 * i);
   173			len += scnprintf(buf + len, PAGE_SIZE - len, "%s,",
   174					 sx9324_cs_pin_usage[pin_idx]);
   175		}
   176		buf[len - 1] = '\n';
   177		return len;
   178	}
   179	

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



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