From: Ming Lei Date: Mon, 12 Apr 2010 16:28:53 +0000 (+0800) Subject: ath9k-htc:respect usb buffer cacheline alignment in ath9k_hif_usb_alloc_rx_urbs X-Git-Tag: v2.6.35-rc1~473^2~460^2^2~6 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f28a7b30cdaa936bdbdc0a2018241936fb56cae6;p=pandora-kernel.git ath9k-htc:respect usb buffer cacheline alignment in ath9k_hif_usb_alloc_rx_urbs 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 and pass it to mac80211, also use kfree_skb to free the skbs 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 --- Reading git-diff-tree failed