linux-kernel - [PATCH 01/19] [media] uvc_driver: Use kmalloc_array() in uvc_simplify

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Date:   Sun, 25 Dec 2016 19:29:46 +0100
From:   SF Markus Elfring <elfring@...rs.sourceforge.net>
To:     linux-media@...r.kernel.org,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org
Subject: [PATCH 01/19] [media] uvc_driver: Use kmalloc_array() in
 uvc_simplify_fraction()

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Sat, 24 Dec 2016 21:10:16 +0100

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@...rs.sourceforge.net>
---
 drivers/media/usb/uvc/uvc_driver.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/media/usb/uvc/uvc_driver.c b/drivers/media/usb/uvc/uvc_driver.c
index 04bf35063c4c..a64b5029f262 100644
--- a/drivers/media/usb/uvc/uvc_driver.c
+++ b/drivers/media/usb/uvc/uvc_driver.c
@@ -253,7 +253,7 @@ void uvc_simplify_fraction(uint32_t *numerator, uint32_t *denominator,
 	uint32_t x, y, r;
 	unsigned int i, n;
 
-	an = kmalloc(n_terms * sizeof *an, GFP_KERNEL);
+	an = kmalloc_array(n_terms, sizeof(*an), GFP_KERNEL);
 	if (an == NULL)
 		return;
 
-- 
2.11.0