ath9k: fix dma sync in rx path

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If buffer is to be accessed by cpu after dma is over, but
between dma mapping and dma unmapping, we should use
dma_sync_single_for_cpu to sync the buffer between cpu with
device. And dma_sync_single_for_device is used to let
device gain the buffer again.

v2: Felix pointed out dma_sync_single_for_device is needed to return
buffer to device if an unsuccessful status bit check is found.

Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Acked-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

...

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Ming Lei 2010-05-15 18:25:40 +08:00 • committed by John W. Linville

parent 26b36cfefa

commit ce9426d190

1 changed files with 7 additions and 3 deletions

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drivers/net/wireless/ath/ath9k/recv.c

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