linux-kernel - [PATCH v10 3/8] iio: buffer-dmaengine: use %zu specifier for sprintf(align)

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Message-Id: <20200316155035.25500-4-alexandru.ardelean@analog.com>
Date:   Mon, 16 Mar 2020 17:50:30 +0200
From:   Alexandru Ardelean <ardeleanalex@...il.com>
To:     linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org
Cc:     jic23@...nel.org, robh+dt@...nel.org, Laszlo.Nagy@...log.com,
        Andrei.Grozav@...log.com, Michael.Hennerich@...log.com,
        Istvan.Csomortani@...log.com, Adrian.Costina@...log.com,
        Dragos.Bogdan@...log.com,
        Alexandru Ardelean <alexandru.ardelean@...log.com>,
        kbuild test robot <lkp@...el.com>
Subject: [PATCH v10 3/8] iio: buffer-dmaengine: use %zu specifier for sprintf(align)

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@...el.com>
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@...log.com>
---
 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