[PATCH 2/3] hwmon: (occ) Remove sequence numbering and checksum calculation

kernel test robot lkp at intel.com
Mon Jul 19 06:26:35 AEST 2021

Hi Eddie,

I love your patch! Perhaps something to improve:

[auto build test WARNING on hwmon/hwmon-next]
[also build test WARNING on linux/master linus/master v5.14-rc1 next-20210716]
[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

url:    https://github.com/0day-ci/linux/commits/Eddie-James/OCC-fsi-and-hwmon-Set-sequence-number-in-submit-interface/20210718-103535
base:   https://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging.git hwmon-next
config: i386-randconfig-s001-20210718 (attached as .config)
compiler: gcc-10 (Ubuntu 10.3.0-1ubuntu1~20.04) 10.3.0
        # apt-get install sparse
        # sparse version: v0.6.3-341-g8af24329-dirty
        # https://github.com/0day-ci/linux/commit/5e8ecc23325ef0310d83a4520071aae18418f88a
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Eddie-James/OCC-fsi-and-hwmon-Set-sequence-number-in-submit-interface/20210718-103535
        git checkout 5e8ecc23325ef0310d83a4520071aae18418f88a
        # save the attached .config to linux build tree
        make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=i386 SHELL=/bin/bash drivers/hwmon/occ/

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

sparse warnings: (new ones prefixed by >>)
>> drivers/hwmon/occ/p8_i2c.c:104:30: sparse: sparse: incompatible types in comparison expression (different type sizes):
>> drivers/hwmon/occ/p8_i2c.c:104:30: sparse:    unsigned int *
>> drivers/hwmon/occ/p8_i2c.c:104:30: sparse:    unsigned long *
   drivers/hwmon/occ/p8_i2c.c:107:42: sparse: sparse: incompatible types in comparison expression (different type sizes):
   drivers/hwmon/occ/p8_i2c.c:107:42: sparse:    unsigned int *
   drivers/hwmon/occ/p8_i2c.c:107:42: sparse:    unsigned long *

vim +104 drivers/hwmon/occ/p8_i2c.c

    99	static int p8_i2c_occ_putscom_be(struct i2c_client *client, u32 address,
   100					 u8 *data, size_t len)
   101	{
   102		__be32 data0 = 0, data1 = 0;
 > 104		memcpy(&data0, data, min(len, 4UL));
   105		if (len > 4UL) {
   106			len -= 4;
   107			memcpy(&data1, data + 4, min(len, 4UL));
   108		}
   110		return p8_i2c_occ_putscom_u32(client, address, be32_to_cpu(data0),
   111					      be32_to_cpu(data1));
   112	}

0-DAY CI Kernel Test Service, Intel Corporation
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