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| author | Ming Lei <tom.leiming@gmail.com> | 2010-04-13 00:29:15 +0800 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2010-04-14 14:52:43 -0400 |
| commit | 0fa35a5836df2b8f285d6f53dfb4316c34621f88 (patch) | |
| tree | 220eccf35fdff1213f4d6a1fd2c9312021e55c89 /drivers/net/wireless/ath/ath9k/wmi.c | |
| parent | e6c6d33cb7d18721e56ce4bb5a0e22593956ef14 (diff) | |
| download | blackbird-op-linux-0fa35a5836df2b8f285d6f53dfb4316c34621f88.tar.gz blackbird-op-linux-0fa35a5836df2b8f285d6f53dfb4316c34621f88.zip | |
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 <Sujith.Manoharan@atheros.com>
Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/ath/ath9k/wmi.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/wmi.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/net/wireless/ath/ath9k/wmi.c b/drivers/net/wireless/ath/ath9k/wmi.c index acb66544a2aa..f2ff18cf3e60 100644 --- a/drivers/net/wireless/ath/ath9k/wmi.c +++ b/drivers/net/wireless/ath/ath9k/wmi.c @@ -213,7 +213,7 @@ free_skb: static void ath9k_wmi_ctrl_tx(void *priv, struct sk_buff *skb, enum htc_endpoint_id epid, bool txok) { - dev_kfree_skb_any(skb); + kfree_skb(skb); } int ath9k_wmi_connect(struct htc_target *htc, struct wmi *wmi, @@ -269,7 +269,7 @@ int ath9k_wmi_cmd(struct wmi *wmi, enum wmi_cmd_id cmd_id, if (!wmi) return -EINVAL; - skb = dev_alloc_skb(headroom + cmd_len); + skb = alloc_skb(headroom + cmd_len, GFP_ATOMIC); if (!skb) return -ENOMEM; @@ -313,7 +313,7 @@ out: ath_print(common, ATH_DBG_WMI, "WMI failure for: %s\n", wmi_cmd_to_name(cmd_id)); mutex_unlock(&wmi->op_mutex); - dev_kfree_skb_any(skb); + kfree_skb(skb); return ret; } |
