From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751538AbaK2BxN (ORCPT ); Fri, 28 Nov 2014 20:53:13 -0500 Received: from s72.web-hosting.com ([198.187.29.22]:51619 "EHLO s72.web-hosting.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751438AbaK2BxM (ORCPT ); Fri, 28 Nov 2014 20:53:12 -0500 X-Greylist: delayed 2919 seconds by postgrey-1.27 at vger.kernel.org; Fri, 28 Nov 2014 20:53:12 EST From: Sujith Manoharan MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <21625.7161.847488.931468@gargle.gargle.HOWL> Date: Sat, 29 Nov 2014 06:36:01 +0530 To: Andrej Gelenberg Cc: , Rajkumar Manoharan , Felix Fietkau , "John W. Linville" Subject: Re: ath: phy1: DMA failed to stop in 10 ms In-Reply-To: <20141129015934.1d2925d5@bigpc> References: <20141129015934.1d2925d5@bigpc> X-Mailer: VM 8.2.0b under 25.0.50.1 (x86_64-unknown-linux-gnu) X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - server72.web-hosting.com X-AntiAbuse: Original Domain - vger.kernel.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - msujith.org X-Get-Message-Sender-Via: server72.web-hosting.com: authenticated_id: sujith@msujith.org X-Source: X-Source-Args: X-Source-Dir: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Andrej Gelenberg wrote: > i got some problems with my Qualcomm Atheros AR9485 wlan pcie card. I > use my card as access point (with hotspotd) on amd64 machine. I use > self compiled vanilla kernel 3.17.4 and a get a lot of > "DMA failed to stop" messages in my kernel log. I found some reports on > similar errors for *wrt, ubuntu and other distros in various > operation modes (ap and client). Increasing the timeout in mac.c to 100 > ms do not help. iommu=soft do not help either and GART iommu is not an > option (usb don't work for me with amd_iommu=off). I found this patch: > https://dev.openwrt.org/browser/trunk/package/mac80211/patches/552-ath9k_rx_dma_stop_check.patch?rev=34910 , > which seems to apply to my problem, but i am not sure if it is a proper > solution. Can you please open a bug on bugzilla.kernel.org ? Sujith