Return-path: Received: from nbd.name ([46.4.11.11]:41390 "EHLO nbd.name" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754978Ab2CGR1i (ORCPT ); Wed, 7 Mar 2012 12:27:38 -0500 Message-ID: <4F579A88.6030503@openwrt.org> (sfid-20120307_182743_066065_F676A18B) Date: Wed, 07 Mar 2012 18:27:36 +0100 From: Felix Fietkau MIME-Version: 1.0 To: "Justin P. Mattock" 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> In-Reply-To: <4F577D9B.7020402@gmail.com> Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-wireless-owner@vger.kernel.org List-ID: 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