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

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Date:	Fri, 23 Jul 2010 16:04:32 +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>
Subject: Re: BUG at arch/x86/mm/physaddr.c:5

2010/7/14 Ortwin Glück <odi@....ch>:
> There is also a DMA warning later on.
>

Seems to be a logical error?  Does the following patch remove your Oops?


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);
--
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