drivers/iwlwifi: use dma_zalloc_coherent() for DMA allocation

Replace dma_alloc_coherent()+memset() with the new dma_zalloc_coherent()

Signed-off-by: Djalal Harouni <tixxdz@opendz.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/drivers/net/wireless/iwlwifi/iwl-trans-pcie.c b/drivers/net/wireless/iwlwifi/iwl-trans-pcie.c
index 409faea..f7724d7 100644 (file)
--- a/drivers/net/wireless/iwlwifi/iwl-trans-pcie.c
+++ b/drivers/net/wireless/iwlwifi/iwl-trans-pcie.c
@@ -88,18 +88,16 @@ static int iwl_trans_rx_alloc(struct iwl_trans *trans)
                return -EINVAL;
 
        /* Allocate the circular buffer of Read Buffer Descriptors (RBDs) */
-       rxq->bd = dma_alloc_coherent(dev, sizeof(__le32) * RX_QUEUE_SIZE,
-                                    &rxq->bd_dma, GFP_KERNEL);
+       rxq->bd = dma_zalloc_coherent(dev, sizeof(__le32) * RX_QUEUE_SIZE,
+                                     &rxq->bd_dma, GFP_KERNEL);
        if (!rxq->bd)
                goto err_bd;
-       memset(rxq->bd, 0, sizeof(__le32) * RX_QUEUE_SIZE);
 
        /*Allocate the driver's pointer to receive buffer status */
-       rxq->rb_stts = dma_alloc_coherent(dev, sizeof(*rxq->rb_stts),
-                                         &rxq->rb_stts_dma, GFP_KERNEL);
+       rxq->rb_stts = dma_zalloc_coherent(dev, sizeof(*rxq->rb_stts),
+                                          &rxq->rb_stts_dma, GFP_KERNEL);
        if (!rxq->rb_stts)
                goto err_rb_stts;
-       memset(rxq->rb_stts, 0, sizeof(*rxq->rb_stts));
 
        return 0;