From e6c6d33cb7d18721e56ce4bb5a0e22593956ef14 Mon Sep 17 00:00:00 2001 From: Ming Lei Date: Tue, 13 Apr 2010 00:29:05 +0800 Subject: ath9k-htc:respect usb buffer cacheline alignment in reg in path In ath9k-htc register in 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: Ming Lei Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ath9k/wmi.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/net/wireless/ath/ath9k/wmi.c') diff --git a/drivers/net/wireless/ath/ath9k/wmi.c b/drivers/net/wireless/ath/ath9k/wmi.c index 818dea0164ec..acb66544a2aa 100644 --- a/drivers/net/wireless/ath/ath9k/wmi.c +++ b/drivers/net/wireless/ath/ath9k/wmi.c @@ -169,7 +169,7 @@ void ath9k_wmi_tasklet(unsigned long data) break; } - dev_kfree_skb_any(skb); + kfree_skb(skb); } static void ath9k_wmi_rsp_callback(struct wmi *wmi, struct sk_buff *skb) @@ -207,7 +207,7 @@ static void ath9k_wmi_ctrl_rx(void *priv, struct sk_buff *skb, ath9k_wmi_rsp_callback(wmi, skb); free_skb: - dev_kfree_skb_any(skb); + kfree_skb(skb); } static void ath9k_wmi_ctrl_tx(void *priv, struct sk_buff *skb, -- cgit v1.2.2