mwl8k: use pci_zalloc_consistent

Remove the now unnecessary memset too.
Signed-off-by: NJoe Perches <joe@perches.com>
Cc: Lennert Buytenhek <buytenh@wantstofly.org>
Cc: "John W. Linville" <linville@tuxdriver.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

drivers/net/wireless/mwl8k.c

@@ -1159,12 +1159,11 @@ static int mwl8k_rxq_init(struct ieee80211_hw *hw, int index)
 
 	size = MWL8K_RX_DESCS * priv->rxd_ops->rxd_size;
 
-	rxq->rxd = pci_alloc_consistent(priv->pdev, size, &rxq->rxd_dma);
+	rxq->rxd = pci_zalloc_consistent(priv->pdev, size, &rxq->rxd_dma);
 	if (rxq->rxd == NULL) {
 		wiphy_err(hw->wiphy, "failed to alloc RX descriptors\n");
 		return -ENOMEM;
 	}
-	memset(rxq->rxd, 0, size);
 
 	rxq->buf = kcalloc(MWL8K_RX_DESCS, sizeof(*rxq->buf), GFP_KERNEL);
 	if (rxq->buf == NULL) {
@@ -1451,12 +1450,11 @@ static int mwl8k_txq_init(struct ieee80211_hw *hw, int index)
 
 	size = MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc);
 
-	txq->txd = pci_alloc_consistent(priv->pdev, size, &txq->txd_dma);
+	txq->txd = pci_zalloc_consistent(priv->pdev, size, &txq->txd_dma);
 	if (txq->txd == NULL) {
 		wiphy_err(hw->wiphy, "failed to alloc TX descriptors\n");
 		return -ENOMEM;
 	}
-	memset(txq->txd, 0, size);
 
 	txq->skb = kcalloc(MWL8K_TX_DESCS, sizeof(*txq->skb), GFP_KERNEL);
 	if (txq->skb == NULL) {