The 'size_t' type behaves differently on 64-bit architectures, and causes compiler a warning of the sort "format '%u' expects argument of type 'unsigned int', but argument 3 has type 'size_t {aka long unsigned int}'". This change adds the correct specifier for the 'align' field. Fixes: 4538c18568099 ("iio: buffer-dmaengine: Report buffer length requirements") Reported-by: kbuild test robot <lkp@xxxxxxxxx> Signed-off-by: Alexandru Ardelean <alexandru.ardelean@xxxxxxxxxx> --- drivers/iio/buffer/industrialio-buffer-dmaengine.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/buffer/industrialio-buffer-dmaengine.c b/drivers/iio/buffer/industrialio-buffer-dmaengine.c index b129693af0fd..94da3b1ca3a2 100644 --- a/drivers/iio/buffer/industrialio-buffer-dmaengine.c +++ b/drivers/iio/buffer/industrialio-buffer-dmaengine.c @@ -134,7 +134,7 @@ static ssize_t iio_dmaengine_buffer_get_length_align(struct device *dev, struct dmaengine_buffer *dmaengine_buffer = iio_buffer_to_dmaengine_buffer(indio_dev->buffer); - return sprintf(buf, "%u\n", dmaengine_buffer->align); + return sprintf(buf, "%zu\n", dmaengine_buffer->align); } static IIO_DEVICE_ATTR(length_align_bytes, 0444, -- 2.20.1