linux-kernel - Re: [PATCH V5 3/5] iio: accel: sca3300: modified to support multi chips

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Date:   Fri, 13 May 2022 09:00:14 +0800
From:   kernel test robot <lkp@...el.com>
To:     LI Qingwu <Qing-wu.Li@...ca-geosystems.com.cn>, jic23@...nel.org,
        lars@...afoo.de, robh+dt@...nel.org, tomas.melin@...sala.com,
        andy.shevchenko@...il.com, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
        linux-iio@...r.kernel.org
Subject: Re: [PATCH V5 3/5] iio: accel: sca3300: modified to support multi
 chips

Hi LI,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on jic23-iio/togreg]
[also build test WARNING on v5.18-rc6 next-20220512]
[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/intel-lab-lkp/linux/commits/LI-Qingwu/iio-accel-sca3300-add-compatible-for-scl3300/20220513-000857
base:   https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git togreg
config: hexagon-randconfig-r041-20220512 (https://download.01.org/0day-ci/archive/20220513/202205130824.ObRAkagG-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 9519dacab7b8afd537811fc2abaceb4d14f4e16a)
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/intel-lab-lkp/linux/commit/15579266e58d7cdf4ff8e7ad7a4fa30a0bd3a589
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review LI-Qingwu/iio-accel-sca3300-add-compatible-for-scl3300/20220513-000857
        git checkout 15579266e58d7cdf4ff8e7ad7a4fa30a0bd3a589
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon SHELL=/bin/bash drivers/iio/accel/

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

All warnings (new ones prefixed by >>):

>> drivers/iio/accel/sca3300.c:288:54: warning: & has lower precedence than ==; == will be evaluated first [-Wparentheses]
                   if (sca_data->chip->avail_modes_table[i] == reg_val&0x03)
                       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^
   drivers/iio/accel/sca3300.c:288:54: note: place parentheses around the '==' expression to silence this warning
                   if (sca_data->chip->avail_modes_table[i] == reg_val&0x03)
                                                                      ^
                       (                                              )
   drivers/iio/accel/sca3300.c:288:54: note: place parentheses around the & expression to evaluate it first
                   if (sca_data->chip->avail_modes_table[i] == reg_val&0x03)
                                                                      ^
                                                               (           )
   1 warning generated.


vim +288 drivers/iio/accel/sca3300.c

   276	
   277	static int sca3300_get_op_mode(struct sca3300_data *sca_data, int *index)
   278	{
   279		int reg_val;
   280		int ret;
   281		int i;
   282	
   283		ret = sca3300_read_reg(sca_data, SCA3300_REG_MODE, &reg_val);
   284		if (ret)
   285			return ret;
   286	
   287		for (i = 0; i < sca_data->chip->num_avail_modes; i++) {
 > 288			if (sca_data->chip->avail_modes_table[i] == reg_val&0x03)
   289				break;
   290		}
   291	
   292		if (i >= sca_data->chip->num_avail_modes)
   293			return -EINVAL;
   294	
   295		*index = i;
   296		return 0;
   297	}
   298	

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp