Return-path: Received: from mail-pw0-f46.google.com ([209.85.160.46]:51869 "EHLO mail-pw0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756625Ab2CGRhS (ORCPT ); Wed, 7 Mar 2012 12:37:18 -0500 Message-ID: <4F579CCA.2060907@gmail.com> (sfid-20120307_183739_600888_C08659E6) Date: Wed, 07 Mar 2012 09:37:14 -0800 From: "Justin P. Mattock" MIME-Version: 1.0 To: Felix Fietkau CC: Mohammed Shafi , linux-kernel@vger.kernel.org, Linux-netdev , Linux-wireless Subject: Re: ath: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x02000020 DMADBG_7=0x00008040 References: <4F576FD5.2050208@gmail.com> <4F577D9B.7020402@gmail.com> <4F579A88.6030503@openwrt.org> In-Reply-To: <4F579A88.6030503@openwrt.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Sender: linux-wireless-owner@vger.kernel.org List-ID: 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 >>> 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