Hi Gilles, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on jic23-iio/togreg] [also build test WARNING on robh/for-next v5.16-rc1 next-20211112] [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/Gilles-Talis/iio-humidity-add-su... base: https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git togreg config: s390-randconfig-s032-20211115 (attached as .config) compiler: s390-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://github.com/0day-ci/linux/commit/d4b528fcce840650354227c99ec7f6c0b... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Gilles-Talis/iio-humidity-add-support-for-Sensirion-SHTC3/20211114-212618 git checkout d4b528fcce840650354227c99ec7f6c0bdd076b0 # 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__' ARCH=s390 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; sparse warnings: (new ones prefixed by >>) drivers/iio/humidity/shtc3.c:88:39: sparse: expected unsigned short [addressable] [usertype] cmd drivers/iio/humidity/shtc3.c:88:39: sparse: got restricted __be16 drivers/iio/humidity/shtc3.c:93:36: sparse: sparse: incorrect type in argument 2 (different base types) @@ expected unsigned short [addressable] [usertype] cmd @@ got restricted __be16 @@ drivers/iio/humidity/shtc3.c:93:36: sparse: expected unsigned short [addressable] [usertype] cmd drivers/iio/humidity/shtc3.c:93:36: sparse: got restricted __be16 drivers/iio/humidity/shtc3.c:93:54: sparse: sparse: Using plain integer as NULL pointer drivers/iio/humidity/shtc3.c:122:13: sparse: expected unsigned short [usertype] cmd drivers/iio/humidity/shtc3.c:122:13: sparse: got restricted __be16 drivers/iio/humidity/shtc3.c:189:38: sparse: sparse: incorrect type in argument 2 (different base types) @@ expected unsigned short [addressable] [usertype] cmd @@ got restricted __be16 @@ drivers/iio/humidity/shtc3.c:189:38: sparse: expected unsigned short [addressable] [usertype] cmd drivers/iio/humidity/shtc3.c:189:38: sparse: got restricted __be16 drivers/iio/humidity/shtc3.c:204:38: sparse: sparse: incorrect type in argument 2 (different base types) @@ expected unsigned short [addressable] [usertype] cmd @@ got restricted __be16 @@ drivers/iio/humidity/shtc3.c:204:38: sparse: expected unsigned short [addressable] [usertype] cmd drivers/iio/humidity/shtc3.c:204:38: sparse: got restricted __be16 drivers/iio/humidity/shtc3.c:204:60: sparse: sparse: Using plain integer as NULL pointer vim +88 drivers/iio/humidity/shtc3.c 85 86 static int shtc3_sleep(struct i2c_client *client) 87 { 89 } 90 91 static int shtc3_wakeup(struct i2c_client *client) 92 { 93 if (shtc3_send_cmd(client, SHTC3_CMD_WAKEUP, 0) < 0) 94 return -EIO; 95 96 /* Wait for device to wake up */ 97 usleep_range(180, 240); 98 99 return 0; 100 } 101 102 static int shtc3_read_channel(struct i2c_client *client, bool temp) 103 { 104 int ret; 105 u16 cmd; 106 u16 meas; 107 108 ret = shtc3_wakeup(client); 109 if (ret < 0) 110 return ret; 111 112 /* 113 * Sensor sends back measurement results after measurement command 114 * has been issued by the host. 115 * Sensor sends 3 bytes (2 bytes of data + 1 byte of CRC) for each 116 * channel sequentially 117 * The command issued by the host determines the channel for which 118 * the sensor will first send the data. 119 * We select the channel for which we need the results 120 * then only read back the 2 bytes corresponding to this channel. 121 */ 123 ret = shtc3_send_cmd(client, cmd, &meas); 124 if (ret < 0) 125 return ret; 126 127 /* Go back to sleep */ 128 shtc3_sleep(client); 129 130 return meas; 131 } 132 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org