[ath9k-devel] DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x02000020 DMADBG_7=0x00006400

[Ben Greear <greearb@candelatech.com>]

On 04/10/2012 04:01 AM, Fredrik Karlsson wrote:
> I have a problem on ar9330 on 3.2.13 where the AP quite frequently stops
> responding and the driver spits out the following message,
>
> ath: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x02000020
> DMADBG_7=0x00006400
> ath: Could not stop RX, we could be confusing the DMA engine when we
> start RX up
>
> anything i can do to fix this?

Can you post some more information about what NIC you are using
(brand, version, etc).

Also, output from 'lspci -v' should be helpful.

What PC are you using?

Are there any errors in /var/log/messages (or dmesg) before this
error?

In the past, it has been suggested that you try disabling power-saving
and see if that helps.  If you do try this and it *does* help, please
let us know.

Thanks,
Ben

-- 
Ben Greear <greearb@candelatech.com>
Candela Technologies Inc  http://www.candelatech.com