Hi Alexandre, I love your patch! Yet something to improve: [auto build test ERROR on iio/togreg] [also build test ERROR on v5.7-rc1 next-20200415] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system. BTW, we also suggest to use '--base' option to specify the base tree in git format-patch, please see https://stackoverflow.com/a/37406982] url: https://github.com/0day-ci/linux/commits/Alexandre-Belloni/iio-adc-ti-ads8344-improve-the-driver/20200416-073357 base: https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git togreg config: c6x-allyesconfig (attached as .config) compiler: c6x-elf-gcc (GCC) 9.3.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day GCC_VERSION=9.3.0 make.cross ARCH=c6x If you fix the issue, kindly add following tag as appropriate Reported-by: kbuild test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): vim +/302 +96 drivers/iio/adc/ti-ads8344.c 72 73 static int ads8344_adc_conversion(struct ads8344 *adc, int channel, 74 bool differential) 75 { 76 struct spi_device *spi = adc->spi; 77 int ret; 78 u8 buf[3]; 79 80 adc->tx_buf = ADS8344_START; 81 if (!differential) 82 adc->tx_buf |= ADS8344_SINGLE_END; 83 adc->tx_buf |= ADS8344_CHANNEL(channel); 84 adc->tx_buf |= ADS8344_CLOCK_INTERNAL; 85 86 ret = spi_write(spi, &adc->tx_buf, 1); 87 if (ret) 88 return ret; 89 90 udelay(9); 91 92 ret = spi_read(spi, buf, sizeof(buf)); 93 if (ret) 94 return ret; 95 > 96 return buf[0] << 9 | buf[1] << 1 | buf[2] >> 7; 97 } 98 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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