Re: ath: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x02000020DMADBG_7=0x00008040

[Justin P. Mattock]

On 03/07/2012 09:27 AM, Felix Fietkau wrote:
> On 2012-03-07 4:24 PM, Justin P. Mattock wrote:
> > On 03/07/2012 07:19 AM, Mohammed Shafi wrote:
> > > On Wed, Mar 7, 2012 at 7:55 PM, Justin P. Mattock
> > > <justinmattock@xxxxxxxxx>   wrote:
> > > > ath9k craps out from time to time(more annoying if anything)
> > > >
> > > > [44309.840830] ath: Failed to stop TX DMA, queues=0x001!
> > > > [44309.858246] ath: DMA failed to stop in 10 ms AR_CR=0x00000024
> > > > AR_DIAG_SW=0x02000020 DMADBG_7=0x00008040
> > > > [44309.858255] ath: Could not stop RX, we could be confusing the DMA engine
> > > > when we start RX up
> > > > [44309.932801] ath: Failed to stop TX DMA, queues=0x001!
> > > > [44309.950352] ath: DMA failed to stop in 10 ms AR_CR=0x00000024
> > > > AR_DIAG_SW=0x02000020 DMADBG_7=0x00008040
> > > > [44309.950361] ath: Could not stop RX, we could be confusing the DMA engine
> > > > when we start RX up
> > > > [44310.024301] ath: Failed to stop TX DMA, queues=0x001!
> > > > [44310.041641] ath: DMA failed to stop in 10 ms AR_CR=0x00000024
> > > > AR_DIAG_SW=0x02000020 DMADBG_7=0x00008040
> > > > [44310.041646] ath: Could not stop RX, we could be confusing the DMA engine
> > > > when we start RX up
> > > > [44310.116316] ath: Failed to stop TX DMA, queues=0x001!
> > > > [44310.133909] ath: DMA failed to stop in 10 ms AR_CR=0x00000024
> > > > AR_DIAG_SW=0x02000020 DMADBG_7=0x00008040
> > > > [44310.133918] ath: Could not stop RX, we could be confusing the DMA engine
> > > > when we start RX up
> > > > [44310.208021] ath: Failed to stop TX DMA, queues=0x001!
> > > > [44310.225752] ath: DMA failed to stop in 10 ms AR_CR=0x00000024
> > > > AR_DIAG_SW=0x02000020 DMADBG_7=0x00008040
> > > > [44310.225761] ath: Could not stop RX, we could be confusing the DMA engine
> > > > when we start RX up
> > > > [44310.299922] ath: Failed to stop TX DMA, queues=0x001!
> > > > [44310.317579] ath: DMA failed to stop in 10 ms AR_CR=0x00000024
> > > > AR_DIAG_SW=0x02000020 DMADBG_7=0x00006040
> > > > [44310.317587] ath: Could not stop RX, we could be confusing the DMA engine
> > > > whe
> > >
> > > this is has become a know issue but less harmful, please try to see if
> > > the workaround of disabling power save helps
> > >
> > > iw dev wlanX set power_save off
> >
> > ok! I have set that on the machine.. will see if I get this message in
> > the upcoming weeks.
> Also, please try this patch with powersave enabled:
> http://nbd.name/ps-fix.patch
>
> - Felix

I will give that a try as well..

Thanks!

Justin P. Mattock

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/