linux-kernel - [PATCH] staging: r8192U_core: Use kmalloc_array() in rtl8192_usb

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Message-ID: <1dda87f1-8c49-ef2a-fa1c-0ebec5bca92c@users.sourceforge.net>
Date:   Fri, 30 Dec 2016 21:56:12 +0100
From:   SF Markus Elfring <elfring@...rs.sourceforge.net>
To:     devel@...verdev.osuosl.org, Baoyou Xie <baoyou.xie@...aro.org>,
        Bhumika Goyal <bhumirks@...il.com>,
        Binoy Jayan <binoy.jayan@...aro.org>,
        "David S. Miller" <davem@...emloft.net>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Larry Finger <Larry.Finger@...inger.net>,
        Nicholas Sim <nicholassimws@...il.com>,
        Salah Triki <salah.triki@....org>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org
Subject: [PATCH] staging: r8192U_core: Use kmalloc_array() in
 rtl8192_usb_initendpoints()

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Fri, 30 Dec 2016 21:43:22 +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.

* Replace the specification of a data type by a pointer dereference
  to make the corresponding size determination a bit safer according to
  the Linux coding style convention.

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 drivers/staging/rtl8192u/r8192U_core.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/staging/rtl8192u/r8192U_core.c b/drivers/staging/rtl8192u/r8192U_core.c
index fdb03dccb449..e0791d357259 100644
--- a/drivers/staging/rtl8192u/r8192U_core.c
+++ b/drivers/staging/rtl8192u/r8192U_core.c
@@ -1682,8 +1682,9 @@ static short rtl8192_usb_initendpoints(struct net_device *dev)
 {
 	struct r8192_priv *priv = ieee80211_priv(dev);
 
-	priv->rx_urb = kmalloc(sizeof(struct urb *) * (MAX_RX_URB + 1),
-			       GFP_KERNEL);
+	priv->rx_urb = kmalloc_array(MAX_RX_URB + 1,
+				     sizeof(*priv->rx_urb),
+				     GFP_KERNEL);
 	if (!priv->rx_urb)
 		return -ENOMEM;
 
-- 
2.11.0