Return-path: Received: from mail-ob0-f174.google.com ([209.85.214.174]:61733 "EHLO mail-ob0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750877Ab2FGKPE (ORCPT ); Thu, 7 Jun 2012 06:15:04 -0400 Received: by obbtb18 with SMTP id tb18so679928obb.19 for ; Thu, 07 Jun 2012 03:15:02 -0700 (PDT) MIME-Version: 1.0 In-Reply-To: <201206071034.03983.tvrtko.ursulin@onelan.co.uk> References: <201205281316.15008.tvrtko.ursulin@onelan.co.uk> <201205291212.46377.tvrtko.ursulin@onelan.co.uk> <20420.48433.260465.183715@gargle.gargle.HOWL> <201206071034.03983.tvrtko.ursulin@onelan.co.uk> Date: Thu, 7 Jun 2012 15:45:02 +0530 Message-ID: (sfid-20120607_121550_352883_E3B59B99) Subject: Re: ath9k stops working (DMA trouble?) shortly after going online From: Mohammed Shafi To: Tvrtko Ursulin Cc: Sujith Manoharan , ath9k-devel@lists.ath9k.org, "Luis R. Rodriguez" , linux-wireless@vger.kernel.org Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-wireless-owner@vger.kernel.org List-ID: On Thu, Jun 7, 2012 at 3:04 PM, Tvrtko Ursulin wrote: > On Tuesday 29 May 2012 13:12:33 Sujith Manoharan wrote: >> > 118.779362 - 118.795238 (WARN_ON WARNING: at >> > drivers/net/wireless/ath/ath9k/recv.c:531 ath_stoprecv+0x118/0x130 >> > [ath9k]()) >> > >> > 524.162432 - 524.753750 >> > 1544.610658 - 1550.218324 >> > 1685.668241 - 1686.991166 >> > 1773.268867 - 1804.465933 >> > >> > Hope this helps? >> >> Yes ! >> >> Here are a couple of patches to help narrow down the issue. >> >> http://sujith.github.com/patches/wl/0001-ath9k-Add-some-debug-messages.patc >> h >> http://sujith.github.com/patches/wl/0002-ath9k-Resync-beacons-after-a-rese >> t.patch >> >> The first one adds some messages, the second sets up beacons properly in >> case a HW reset happens. Can you try these and post the log ? >> >> If you are willing to move to a more recent kernel, then current >> wireless-testing would be a good choice since it has various driver fixes. >> There are a few pending ath9k patches which have not been merged yet, you >> can find it here: >> >> http://sujith.github.com/patches/wl/wl-ath9k-May-29-2012.patch > > For the record, we swapped the mini PCI card to a different one of the same > model and now it seems to work fine. Could you imagine a hardware fault or > tolerance issue causing such errors? > could be, i shorted a resistor in one of the chips for some reason and saw some Failed to stop DMA issues(well the chip was not working at all) -- thanks, shafi