linux-kernel - [PATCH 3.2 128/147] Staging: iio/accel: Changed return type of lis3l02dq_read_event

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Date:   Mon, 06 Nov 2017 23:03:07 +0000
From:   Ben Hutchings <ben@...adent.org.uk>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:     akpm@...ux-foundation.org,
        "Andreas Ruprecht" <rupran@...server.de>,
        "Jonathan Cameron" <jic23@...nel.org>,
        "Greg Kroah-Hartman" <gregkh@...e.de>
Subject: [PATCH 3.2 128/147] Staging: iio/accel: Changed return type of
 lis3l02dq_read_event_config() to int

3.2.95-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Andreas Ruprecht <rupran@...server.de>

commit 28998e005bb669b60de0e432d6f142267f5c1403 upstream.

The lis3l02dq_read_event_config() function returned an ssize_t up to
now, which lead to a compiler warning in line 660 (initialization from
incompatible pointer type). The iio_info struct is defined to accept an
int-returning function as the read_event_config parameter.

Also it seems odd to have the check for (ret < 0) and return ret in
this case, when the return type is signed.

Signed-off-by: Andreas Ruprecht <rupran@...server.de>
Acked-by: Jonathan Cameron <jic23@...nel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 drivers/staging/iio/accel/lis3l02dq_core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/staging/iio/accel/lis3l02dq_core.c
+++ b/drivers/staging/iio/accel/lis3l02dq_core.c
@@ -534,7 +534,7 @@ static struct iio_chan_spec lis3l02dq_ch
 };
 
 
-static ssize_t lis3l02dq_read_event_config(struct iio_dev *indio_dev,
+static int lis3l02dq_read_event_config(struct iio_dev *indio_dev,
 					   u64 event_code)
 {