Re: [PATCH 1/3] iio: adc: ti-ads8344: properly byte swap value

[kbuild test robot]

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	

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0-DAY CI Kernel Test Service, Intel Corporation
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