[PATCH] iwlegacy: Use kcalloc instead of kzalloc to allocate array
From: Thomas Meyer <hidden>
Date: 2011-12-03 08:28:39
Also in:
linux-wireless, lkml
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 <redacted> --- diff -u -p a/drivers/net/wireless/iwlegacy/iwl-tx.c b/drivers/net/wireless/iwlegacy/iwl-tx.c
--- a/drivers/net/wireless/iwlegacy/iwl-tx.c 2011-11-13 11:07:38.540345582 +0100
+++ b/drivers/net/wireless/iwlegacy/iwl-tx.c 2011-11-28 19:55:42.036442592 +0100@@ -297,8 +297,8 @@ static int iwl_legacy_tx_queue_alloc(str /* Driver private data, only for Tx (not command) queues, * not shared with device. */ if (id != priv->cmd_queue) { - txq->txb = kzalloc(sizeof(txq->txb[0]) * - TFD_QUEUE_SIZE_MAX, GFP_KERNEL); + txq->txb = kcalloc(TFD_QUEUE_SIZE_MAX, sizeof(txq->txb[0]), + GFP_KERNEL); if (!txq->txb) { IWL_ERR(priv, "kmalloc for auxiliary BD " "structures failed\n");