Hi Alexandru, I love your patch! Perhaps something to improve: [auto build test WARNING on iio/togreg] [also build test WARNING on linus/master v5.6-rc3 next-20200226] [cannot apply to linux/master] [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/Alexandru-Ardelean/iio-adi-axi-adc-ad9647-Add-support-for-AD9467-ADC/20200227-030546 base: https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git togreg config: riscv-allyesconfig (attached as .config) compiler: riscv64-linux-gcc (GCC) 7.5.0 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=7.5.0 make.cross ARCH=riscv If you fix the issue, kindly add following tag Reported-by: kbuild test robot All warnings (new ones prefixed by >>): drivers/iio/buffer/industrialio-buffer-dmaengine.c: In function 'iio_dmaengine_buffer_get_length_align': >> drivers/iio/buffer/industrialio-buffer-dmaengine.c:137:24: warning: format '%u' expects argument of type 'unsigned int', but argument 3 has type 'size_t {aka long unsigned int}' [-Wformat=] return sprintf(buf, "%u\n", dmaengine_buffer->align); ~^ ~~~~~~~~~~~~~~~~~~~~~~~ %lu vim +137 drivers/iio/buffer/industrialio-buffer-dmaengine.c 2d6ca60f328450 Lars-Peter Clausen 2015-10-13 129 4538c185680996 Lars-Peter Clausen 2019-12-11 130 static ssize_t iio_dmaengine_buffer_get_length_align(struct device *dev, 4538c185680996 Lars-Peter Clausen 2019-12-11 131 struct device_attribute *attr, char *buf) 4538c185680996 Lars-Peter Clausen 2019-12-11 132 { 4538c185680996 Lars-Peter Clausen 2019-12-11 133 struct iio_dev *indio_dev = dev_to_iio_dev(dev); 4538c185680996 Lars-Peter Clausen 2019-12-11 134 struct dmaengine_buffer *dmaengine_buffer = 4538c185680996 Lars-Peter Clausen 2019-12-11 135 iio_buffer_to_dmaengine_buffer(indio_dev->buffer); 4538c185680996 Lars-Peter Clausen 2019-12-11 136 4538c185680996 Lars-Peter Clausen 2019-12-11 @137 return sprintf(buf, "%u\n", dmaengine_buffer->align); 4538c185680996 Lars-Peter Clausen 2019-12-11 138 } 4538c185680996 Lars-Peter Clausen 2019-12-11 139 :::::: The code at line 137 was first introduced by commit :::::: 4538c185680996d7328beac629dbdb7dd3f8f34e iio: buffer-dmaengine: Report buffer length requirements :::::: TO: Lars-Peter Clausen :::::: CC: Jonathan Cameron --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org