Hi Eugen, I love your patch! Perhaps something to improve: [auto build test WARNING on iio/togreg] [also build test WARNING on v4.19-rc4 next-20180919] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/Eugen-Hristev/iio-adc-at91-fix-acking-DRDY-irq-on-simple-conversions/20180920-215908 base: https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git togreg config: arm-allmodconfig (attached as .config) compiler: arm-linux-gnueabi-gcc (Debian 7.2.0-11) 7.2.0 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 GCC_VERSION=7.2.0 make.cross ARCH=arm All warnings (new ones prefixed by >>): drivers/iio/adc/at91_adc.c: In function 'at91_adc_trigger_handler': >> drivers/iio/adc/at91_adc.c:257:8: warning: assignment discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers] chan = idev->channels + i; ^ vim +/const +257 drivers/iio/adc/at91_adc.c 245 246 static irqreturn_t at91_adc_trigger_handler(int irq, void *p) 247 { 248 struct iio_poll_func *pf = p; 249 struct iio_dev *idev = pf->indio_dev; 250 struct at91_adc_state *st = iio_priv(idev); 251 struct iio_chan_spec *chan; 252 int i, j = 0; 253 254 for (i = 0; i < idev->masklength; i++) { 255 if (!test_bit(i, idev->active_scan_mask)) 256 continue; > 257 chan = idev->channels + i; 258 st->buffer[j] = at91_adc_readl(st, AT91_ADC_CHAN(st, chan->channel)); 259 j++; 260 } 261 262 iio_push_to_buffers_with_timestamp(idev, st->buffer, pf->timestamp); 263 264 iio_trigger_notify_done(idev->trig); 265 266 /* Needed to ACK the DRDY interruption */ 267 at91_adc_readl(st, AT91_ADC_LCDR); 268 269 enable_irq(st->irq); 270 271 return IRQ_HANDLED; 272 } 273 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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