linux-kernel - [PATCH 01/18] HID: Use kmalloc_array() in hid_input

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Date:   Tue, 7 Feb 2017 20:39:22 +0100
From:   SF Markus Elfring <elfring@...rs.sourceforge.net>
To:     linux-input@...r.kernel.org,
        Benjamin Tissoires <benjamin.tissoires@...hat.com>,
        Bruno Prémont <bonbons@...ux-vserver.org>,
        Jiri Kosina <jikos@...nel.org>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org
Subject: [PATCH 01/18] HID: Use kmalloc_array() in hid_input_field()

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Mon, 6 Feb 2017 18:18:41 +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/hid/hid-core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index 538ff697a4cf..9b0a97bbde96 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -1272,7 +1272,7 @@ static void hid_input_field(struct hid_device *hid, struct hid_field *field,
 	__s32 max = field->logical_maximum;
 	__s32 *value;
 
-	value = kmalloc(sizeof(__s32) * count, GFP_ATOMIC);
+	value = kmalloc_array(count, sizeof(__s32), GFP_ATOMIC);
 	if (!value)
 		return;
 
-- 
2.11.1