From: Markus Elfring <elfring@users.sourceforge.net>
Date: Fri, 23 Sep 2016 20:30:32 +0000 (+0200)
Subject: iio: Use kmalloc_array() in iio_scan_mask_set()
X-Git-Tag: v4.14-rc1~1919^2~508^2~110
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=057ac1acdfc4743f066fcefe359385cad00549eb;p=platform%2Fkernel%2Flinux-rpi3.git

iio: Use kmalloc_array() in iio_scan_mask_set()

A multiplication for the size determination of a memory allocation
indicated that an array data structure should be processed.
Thus use the corresponding function "kmalloc_array".

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
---

diff --git a/drivers/iio/industrialio-buffer.c b/drivers/iio/industrialio-buffer.c
index 158aaf4..b12830b 100644
--- a/drivers/iio/industrialio-buffer.c
+++ b/drivers/iio/industrialio-buffer.c
@@ -307,10 +307,9 @@ static int iio_scan_mask_set(struct iio_dev *indio_dev,
 	const unsigned long *mask;
 	unsigned long *trialmask;
 
-	trialmask = kmalloc(sizeof(*trialmask)*
-			    BITS_TO_LONGS(indio_dev->masklength),
-			    GFP_KERNEL);
-
+	trialmask = kmalloc_array(BITS_TO_LONGS(indio_dev->masklength),
+				  sizeof(*trialmask),
+				  GFP_KERNEL);
 	if (trialmask == NULL)
 		return -ENOMEM;
 	if (!indio_dev->masklength) {