From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755323AbZEZKfs (ORCPT ); Tue, 26 May 2009 06:35:48 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751335AbZEZKfj (ORCPT ); Tue, 26 May 2009 06:35:39 -0400 Received: from mail-ew0-f176.google.com ([209.85.219.176]:39414 "EHLO mail-ew0-f176.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751327AbZEZKfh convert rfc822-to-8bit (ORCPT ); Tue, 26 May 2009 06:35:37 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=from:to:subject:date:user-agent:cc:references:in-reply-to :mime-version:content-type:content-transfer-encoding :content-disposition:message-id; b=n1UFQeqsqMa6B0+pqbsqY9EZYzVsfVr7nOdVpoJoK8NpSPOyhoPCuVrCrLsmG7UeKd /3FJU+nK4OTorAfW2Lg+9auyqCbxviwtEvo0KX7QQjFcPLsGB+Q6gBqOU6rH7wDx/lu2 OKvLYMEocSCNgQrcqVeepT9so1aC8aPiBB56c= From: Ivo van Doorn To: alejandro.riveira@gmail.com Subject: Re: [2.6.27-rc7 vs 2.6.29 Regresion] Wifi Network Slownes rt2500pci Date: Tue, 26 May 2009 12:35:36 +0200 User-Agent: KMail/1.9.9 Cc: linux-wireless , linux-kernel , linville@tuxdriver.com, Greg KH , "Rafael J. Wysocki" References: <1243247687.5322.8.camel@varda> <200905261058.01039.IvDoorn@gmail.com> <1243333072.4888.2.camel@varda> In-Reply-To: <1243333072.4888.2.camel@varda> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-15" Content-Transfer-Encoding: 8BIT Content-Disposition: inline Message-Id: <200905261235.36658.IvDoorn@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tuesday 26 May 2009, Alejandro Riveira Fernández wrote: > El mar, 26-05-2009 a las 10:58 +0200, Ivo van Doorn escribió: > > On Monday 25 May 2009, Alejandro Riveira Fernández wrote: > > > > Would the output of this script[2] for 2.6.29.4 with and without the > > > revert help you ? > > > > Yes please try it. but for 2.6.29 you probably need attached script instead. > > I am not sure if it would produce something useful, because I think Johannes > > assertion is right. With his patch the correct bitmask is send to the driver > > and the driver actually needs _that_ bitmask without any editing > > (rather then the incorrect one which was send before that patch). > > What causes the regression then? No idea. Apparently the invalid bitmask is accepted by the device under certain conditions. Which would be very odd.... But since dozens of people reported this problem for 2.6.27 as well, it probably depends heavily on the actual chipset revision or configuration. > Anyway For the script to work what config options do I need? debugfs? > Anything else ? CONFIG_DEBUGFS CONFIG_MAC80211_DEBUGFS CONFIG_RT2X00_LIB_DEBUGFS And thats it, make sure debugfs is mounted and just run the script. The script will detect mount location and rt2x00 interface. Ivo