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Commit 546adf29 authored by Helmut Schaa's avatar Helmut Schaa Committed by John W. Linville
Browse files

rt2x00: Optimize unmapping of skbs 



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: default avatarHelmut Schaa <helmut.schaa@googlemail.com>
Signed-off-by: default avatarIvo van Doorn <IvDoorn@gmail.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent a23c2208

drivers/net/wireless/rt2x00/rt2x00queue.c

+1 −3
Original line number Diff line number Diff line
@@ -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;