From 0fa35a5836df2b8f285d6f53dfb4316c34621f88 Mon Sep 17 00:00:00 2001 From: Ming Lei Date: Tue, 13 Apr 2010 00:29:15 +0800 Subject: ath9k-htc:respect usb buffer cacheline alignment in reg out path In ath9k-htc register out path, 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 and pass it to mac80211, also use kfree_skb to free the skb allocated by alloc_skb(we can use kfree_skb safely in hardirq context since skb->destructor is NULL always in the path). Signed-off-by: Sujith Signed-off-by: Ming Lei Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ath9k/hif_usb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/net/wireless/ath/ath9k/hif_usb.c') diff --git a/drivers/net/wireless/ath/ath9k/hif_usb.c b/drivers/net/wireless/ath/ath9k/hif_usb.c index 259de170ea2..3d8f0f468f8 100644 --- a/drivers/net/wireless/ath/ath9k/hif_usb.c +++ b/drivers/net/wireless/ath/ath9k/hif_usb.c @@ -53,7 +53,7 @@ static void hif_usb_regout_cb(struct urb *urb) return; free: - dev_kfree_skb_any(cmd->skb); + kfree_skb(cmd->skb); kfree(cmd); } -- cgit v1.2.3