From: Felix Fietkau <nbd@openwrt.org>
To: Ming Lei <tom.leiming@gmail.com>
Cc: lrodriguez@atheros.com, linux-wireless@vger.kernel.org,
linville@tuxdriver.com
Subject: Re: [PATCH 2/2] ath9k: fix dma sync in rx path
Date: Sat, 15 May 2010 12:44:56 +0200 [thread overview]
Message-ID: <4BEE7B28.5000304@openwrt.org> (raw)
In-Reply-To: <20100515182540.6f4e140c@tom-lei>
On 2010-05-15 12:25 PM, Ming Lei wrote:
> From edd368e7436e7a80c5a43e7ad40cff1f3fa20806 Mon Sep 17 00:00:00 2001
> From: Ming Lei <tom.leiming@gmail.com>
> Date: Fri, 14 May 2010 17:35:51 +0800
> Subject: [PATCH 2/2] ath9k: fix dma sync in rx path(v2)
>
> 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>
> Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Thanks, I will test that later and let you know if it works.
- Felix
next prev parent reply other threads:[~2010-05-15 10:44 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-05-14 13:15 [PATCH 1/2] ath9k: fix dma direction for map/unmap in ath_rx_tasklet tom.leiming
2010-05-14 13:16 ` [PATCH 2/2] ath9k: fix dma sync in rx path tom.leiming
2010-05-14 14:28 ` Felix Fietkau
2010-05-14 15:27 ` Ming Lei
2010-05-14 16:19 ` Felix Fietkau
2010-05-15 1:31 ` Ming Lei
2010-05-15 9:25 ` Felix Fietkau
2010-05-15 9:52 ` Ming Lei
2010-05-15 10:25 ` Ming Lei
2010-05-15 10:44 ` Felix Fietkau [this message]
2010-05-27 13:51 ` Felix Fietkau
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