redonkable/alistair23-linux
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rt2x00: Optimize unmapping of skbs

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Since no skb will be mapped for RX and TX at the same time we can
simply shortcut the check for SKBDESC_DMA_MAPPED_TX.

Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Helmut Schaa 2010-10-09 13:33:43 +02:00 committed by John W. Linville
parent a23c220803
commit 546adf294e
1 changed files with 1 additions and 3 deletions
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4
drivers/net/wireless/rt2x00/rt2x00queue.c
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@ -115,9 +115,7 @@ void rt2x00queue_unmap_skb(struct rt2x00_dev *rt2x00dev, struct sk_buff *skb)
dma_unmap_single(rt2x00dev->dev, skbdesc->skb_dma, skb->len,
DMA_FROM_DEVICE);
skbdesc->flags &= ~SKBDESC_DMA_MAPPED_RX;
}
if (skbdesc->flags & SKBDESC_DMA_MAPPED_TX) {
} else if (skbdesc->flags & SKBDESC_DMA_MAPPED_TX) {
dma_unmap_single(rt2x00dev->dev, skbdesc->skb_dma, skb->len,
DMA_TO_DEVICE);
skbdesc->flags &= ~SKBDESC_DMA_MAPPED_TX;