]> git.proxmox.com Git - mirror_ubuntu-eoan-kernel.git/commit
ath9k: fix dma sync in rx path
authorMing Lei <tom.leiming@gmail.com>
Sat, 15 May 2010 10:25:40 +0000 (18:25 +0800)
committerJohn W. Linville <linville@tuxdriver.com>
Fri, 4 Jun 2010 18:55:09 +0000 (14:55 -0400)
commitce9426d1908001fb2f7b0152fbe4184bbc0c7b68
tree42389f116a18a2ba8c3d7b20f52d591766bb9602
parent26b36cfefaf2be98b225e3c1a399edb0daf52ddd
ath9k: fix dma sync in rx path

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