linux-kernel - [jic23-iio:testing 146/151] drivers/iio/chemical/scd4x.c:273:27: sparse: sparse: cast to restricted _

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Message-ID: <202110121840.O1m2edFN-lkp@intel.com>
Date:   Tue, 12 Oct 2021 18:20:50 +0800
From:   kernel test robot <lkp@...el.com>
To:     Roan van Dijk <roan@...tonic.nl>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        Jonathan Cameron <Jonathan.Cameron@...wei.com>
Subject: [jic23-iio:testing 146/151] drivers/iio/chemical/scd4x.c:273:27:
 sparse: sparse: cast to restricted __be16

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git testing
head:   687109cbbfd744cba8aea3580770dcf6e13ce12a
commit: d82f732078b7a91b5cdde048fa1bc59f2400e21a [146/151] drivers: iio: chemical: Add support for Sensirion SCD4x CO2 sensor
config: alpha-randconfig-s032-20211012 (attached as .config)
compiler: alpha-linux-gcc (GCC) 11.2.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # apt-get install sparse
        # sparse version: v0.6.4-dirty
        # https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git/commit/?id=d82f732078b7a91b5cdde048fa1bc59f2400e21a
        git remote add jic23-iio https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git
        git fetch --no-tags jic23-iio testing
        git checkout d82f732078b7a91b5cdde048fa1bc59f2400e21a
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=alpha SHELL=/bin/bash drivers/iio/chemical/

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


sparse warnings: (new ones prefixed by >>)
>> drivers/iio/chemical/scd4x.c:273:27: sparse: sparse: cast to restricted __be16
>> drivers/iio/chemical/scd4x.c:273:27: sparse: sparse: cast to restricted __be16
>> drivers/iio/chemical/scd4x.c:273:27: sparse: sparse: cast to restricted __be16
>> drivers/iio/chemical/scd4x.c:273:27: sparse: sparse: cast to restricted __be16
   drivers/iio/chemical/scd4x.c:290:23: sparse: sparse: cast to restricted __be16
   drivers/iio/chemical/scd4x.c:290:23: sparse: sparse: cast to restricted __be16
   drivers/iio/chemical/scd4x.c:290:23: sparse: sparse: cast to restricted __be16
   drivers/iio/chemical/scd4x.c:290:23: sparse: sparse: cast to restricted __be16
   drivers/iio/chemical/scd4x.c:376:24: sparse: sparse: cast to restricted __be16
   drivers/iio/chemical/scd4x.c:376:24: sparse: sparse: cast to restricted __be16
   drivers/iio/chemical/scd4x.c:376:24: sparse: sparse: cast to restricted __be16
   drivers/iio/chemical/scd4x.c:376:24: sparse: sparse: cast to restricted __be16
   drivers/iio/chemical/scd4x.c:418:16: sparse: sparse: cast to restricted __be16
   drivers/iio/chemical/scd4x.c:418:16: sparse: sparse: cast to restricted __be16
   drivers/iio/chemical/scd4x.c:418:16: sparse: sparse: cast to restricted __be16
   drivers/iio/chemical/scd4x.c:418:16: sparse: sparse: cast to restricted __be16

vim +273 drivers/iio/chemical/scd4x.c

   262	
   263	static int scd4x_read_meas(struct scd4x_state *state, uint16_t *meas)
   264	{
   265		int i, ret;
   266		uint16_t buf[3];
   267	
   268		ret = scd4x_read(state, CMD_READ_MEAS, buf, sizeof(buf));
   269		if (ret)
   270			return ret;
   271	
   272		for (i = 0; i < ARRAY_SIZE(buf); i++)
 > 273			meas[i] = be16_to_cpu(buf[i]);
   274	
   275		return 0;
   276	}
   277	

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

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