From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thomas Meyer Subject: [PATCH] IPoIB: Use kcalloc instead of kzalloc to allocate array Date: Tue, 29 Nov 2011 22:08:00 +0100 Message-ID: <1322600880.1534.307.camel@localhost.localdomain> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Return-path: Sender: linux-kernel-owner@vger.kernel.org To: linux-rdma@vger.kernel.org, linux-kernel@vger.kernel.org List-Id: linux-rdma@vger.kernel.org The advantage of kcalloc is, that will prevent integer overflows which could result from the multiplication of number of elements and size and it is also a bit nicer to read. The semantic patch that makes this change is available in https://lkml.org/lkml/2011/11/25/107 Signed-off-by: Thomas Meyer --- diff -u -p a/drivers/infiniband/ulp/ipoib/ipoib_main.c b/drivers/infiniband/ulp/ipoib/ipoib_main.c --- a/drivers/infiniband/ulp/ipoib/ipoib_main.c 2011-11-13 11:07:26.816827448 +0100 +++ b/drivers/infiniband/ulp/ipoib/ipoib_main.c 2011-11-28 19:51:19.444842130 +0100 @@ -933,7 +933,7 @@ int ipoib_dev_init(struct net_device *de struct ipoib_dev_priv *priv = netdev_priv(dev); /* Allocate RX/TX "rings" to hold queued skbs */ - priv->rx_ring = kzalloc(ipoib_recvq_size * sizeof *priv->rx_ring, + priv->rx_ring = kcalloc(ipoib_recvq_size, sizeof(*priv->rx_ring), GFP_KERNEL); if (!priv->rx_ring) { printk(KERN_WARNING "%s: failed to allocate RX ring (%d entries)\n",