Return-path: Received: from mail-pz0-f193.google.com ([209.85.222.193]:40429 "EHLO mail-pz0-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751696Ab0DJPFP (ORCPT ); Sat, 10 Apr 2010 11:05:15 -0400 Received: by pzk31 with SMTP id 31so817455pzk.33 for ; Sat, 10 Apr 2010 08:05:14 -0700 (PDT) From: tom.leiming@gmail.com To: Sujith.Manoharan@atheros.com, lrodriguez@atheros.com Cc: linux-wireless@vger.kernel.org, linville@tuxdriver.com, Ming Lei Subject: [PATCH 1/3] ath9k-htc: replace __dev_alloc_skb with alloc_skb in ath9k_hif_usb_alloc_rx_urbs Date: Sat, 10 Apr 2010 23:04:47 +0800 Message-Id: <1270911887-5717-1-git-send-email-tom.leiming@gmail.com> Sender: linux-wireless-owner@vger.kernel.org List-ID: From: Ming Lei In ath9k_hif_usb_alloc_rx_urbs, ath9k-htc will pass skb->data into usb hcd and usb hcd will do dma mapping and unmapping to the buffer pointed by skb->data, so we should pass a cache-line aligned address. This patch replace __dev_alloc_skb with alloc_skb to make skb->data pointed to a cacheline aligned address simply since ath9k-htc does not skb_push on the skb. Signed-off-by: Ming Lei --- drivers/net/wireless/ath/ath9k/hif_usb.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/drivers/net/wireless/ath/ath9k/hif_usb.c b/drivers/net/wireless/ath/ath9k/hif_usb.c index e2117e7..a498815 100644 --- a/drivers/net/wireless/ath/ath9k/hif_usb.c +++ b/drivers/net/wireless/ath/ath9k/hif_usb.c @@ -625,7 +625,7 @@ static int ath9k_hif_usb_alloc_rx_urbs(struct hif_device_usb *hif_dev) } /* Allocate buffer */ - skb = __dev_alloc_skb(MAX_RX_BUF_SIZE, GFP_KERNEL); + skb = alloc_skb(MAX_RX_BUF_SIZE, GFP_KERNEL); if (!skb) { ret = -ENOMEM; goto err_skb; -- 1.6.2.5