linux-kernel - Re: BUG at arch/x86/mm/physaddr.c:5

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Date:	Mon, 26 Jul 2010 14:13:47 +0800
From:	Jike Song <albcamus@...il.com>
To:	Ortwin Glück <odi@....ch>
Cc:	linux-kernel@...r.kernel.org, Felix Fietkau <nbd@...nwrt.org>,
	Vasanthakumar Thiagarajan <vasanth@...eros.com>,
	lrodriguez@...eros.com, jmalinen@...eros.com,
	Sujith.Manoharan@...eros.com, senthilkumar@...eros.com,
	linux-wireless@...r.kernel.org
Subject: Re: BUG at arch/x86/mm/physaddr.c:5

2010/7/23 Ortwin Glück <odi@....ch>:
> On 23.07.2010 10:04, Jike Song wrote:
>> Seems to be a logical error?  Does the following patch remove your Oops?
>
> Looking at the init code I agree. Yes, the patch fixes the OOPS. I am sure
> because the OOPS occurred at every boot and now it's gone.
>
> Thanks!
>
> Ortwin

Hi Maintainers,

 Since Ortwin has confirmed this patch , would you give me an ACK/NAK please?


-- 
Thanks,
Jike


>From 1414829dcc5b53ef4802f5de2b9be58e2ca0fb23 Mon Sep 17 00:00:00 2001
From: Jike Song <albcamus@...il.com>
Date: Mon, 26 Jul 2010 13:42:41 +0800
Subject: [PATCH] ath9k: fix wrong DMA direction in RX tasklet
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 8bit

Commit b5c80475abaad015699384ca64ef8229fdd88758 introduced edma
support for RX, hence bidirectional DMA support. But it
specified the DMA type as DMA_FROM_DEVICE by mistake.

Reported-and-tested-by: Ortwin Glück <odi@....ch>
Signed-off-by: Jike Song <albcamus@...il.com>
---
 drivers/net/wireless/ath/ath9k/recv.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/ath/ath9k/recv.c
b/drivers/net/wireless/ath/ath9k/recv.c
index ca6065b..e3e5291 100644
--- a/drivers/net/wireless/ath/ath9k/recv.c
+++ b/drivers/net/wireless/ath/ath9k/recv.c
@@ -844,9 +844,9 @@ int ath_rx_tasklet(struct ath_softc *sc, int flush, bool hp)
 	int dma_type;

 	if (edma)
-		dma_type = DMA_FROM_DEVICE;
-	else
 		dma_type = DMA_BIDIRECTIONAL;
+	else
+		dma_type = DMA_FROM_DEVICE;

 	qtype = hp ? ATH9K_RX_QUEUE_HP : ATH9K_RX_QUEUE_LP;
 	spin_lock_bh(&sc->rx.rxbuflock);
-- 
1.6.2
--
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