Return-path: Received: from fg-out-1718.google.com ([72.14.220.153]:48346 "EHLO fg-out-1718.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757508Ab0FQUdM (ORCPT ); Thu, 17 Jun 2010 16:33:12 -0400 Received: by fg-out-1718.google.com with SMTP id l26so177235fgb.1 for ; Thu, 17 Jun 2010 13:33:10 -0700 (PDT) Subject: Re: [PATCH] ath5k: disable ASPM From: Maxim Levitsky To: Jussi Kivilinna Cc: ath5k-devel@lists.ath5k.org, linux-wireless@vger.kernel.org, "Luis R. Rodriguez" , Bob Copeland In-Reply-To: <20100528100901.14580.1322.stgit@fate.lan> References: <20100528100901.14580.1322.stgit@fate.lan> Content-Type: text/plain; charset="UTF-8" Date: Thu, 17 Jun 2010 23:33:05 +0300 Message-ID: <1276806785.20754.8.camel@maxim-laptop> Mime-Version: 1.0 Sender: linux-wireless-owner@vger.kernel.org List-ID: On Fri, 2010-05-28 at 13:09 +0300, Jussi Kivilinna wrote: > Atheros card on Acer Aspire One (AOA150, Atheros Communications Inc. AR5001 > Wireless Network Adapter [168c:001c] (rev 01)) doesn't work well with ASPM > enabled. With ASPM ath5k will eventually stall on heavy traffic with often > 'unsupported jumbo' warnings appearing. Disabling ASPM L0s/L1 in ath5k fixes > these problems. > > Reproduced with pcie_aspm=force and by using 'nc < /dev/zero > /dev/null' at > both ends (usually stalls within seconds). This fixes the same nasty problem on my AR2425. My AR2425 will stall if it transmits for about 1~2 minutes. It sends storm of RXORN interrupts although it only transmits. I see that now lspci calls it AR5001. Jussi Kivilinna, million thanks to you. I would never think of going this direction. Luis, so I was right after all, wasn't I? It is a hardware bug that is worked around in windows driver by disabling PCIE ASPM L0S. Jussi Kivilinna, thanks again, I really mean it. Best regards, Maxim Levitsky