From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752656Ab0CSPB5 (ORCPT ); Fri, 19 Mar 2010 11:01:57 -0400 Received: from mail1-out1.atlantis.sk ([80.94.52.55]:57892 "EHLO mail.atlantis.sk" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751062Ab0CSPB4 (ORCPT ); Fri, 19 Mar 2010 11:01:56 -0400 From: Ondrej Zary To: Luis Correia Subject: Re: [rt2x00-users] rt2500usb broken since 2.6.29 Date: Fri, 19 Mar 2010 16:01:47 +0100 User-Agent: KMail/1.9.10 Cc: users@rt2x00.serialmonkey.com, linux-kernel@vger.kernel.org References: <201003182246.54889.linux@rainbow-software.org> <201003182304.43196.linux@rainbow-software.org> <880c1631003181510k1850de40r823418a0b921ecee@mail.gmail.com> In-Reply-To: <880c1631003181510k1850de40r823418a0b921ecee@mail.gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <201003191601.48405.linux@rainbow-software.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thursday 18 March 2010, Luis Correia wrote: > Hi, > > On Thu, Mar 18, 2010 at 22:04, Ondrej Zary wrote: > > On Thursday 18 March 2010 22:51:18 Luis Correia wrote: > >> Hi, > >> > >> On Thu, Mar 18, 2010 at 21:46, Ondrej Zary > > > > wrote: > >> > Hello, > >> > rt2500usb is broken since kernel 2.6.29. It has been discussed before > >> > but never solved: > >> > http://rt2x00.serialmonkey.com/phpBB/viewtopic.php?f=4&t=4834 > >> > https://bugzilla.redhat.com/show_bug.cgi?id=484888 > >> > > >> > I have Asus WL-167G and it really does not work. Scanning works, > >> > association > >> > too but no packets can be sent (looks like receive works because > >> > tcpdump shows packets from other machines). DHCP fails (No DHCPOFFERS > >> > received). > >> > > >> > The problem is caused by this patch: > >> > > >> > rt2x00: Implement HW encryption (rt2500usb) > >> > > >> > http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=com > >> >mit ;h=dddfb478b26e29a2b47f655ec219e743b8111015 > >> > > >> > Removing it from 2.6.29 restores the functionality. > >> > > >> > -- > >> > Ondrej Zary > >> > >> you can prevent hardware encryption by supplying "nohwcrypt=1" to the > >> driver. > >> (modinfo rt2500usb) > > > > That did not work. Maybe that was because I just unloaded the rt2500usb > > module and loaded it again with nohwcrypt=1 without rebooting the > > machine. Then I removed the HW encryption, recompiled and reloaded and it > > did not work either. It started to work only after reboot. > > did you actually remove the usb module and unloaded the module as well? > > you then need to load the module with the option, wait one sec and > then plug the device back in. > > > Does the HW encryption really work with any rt2500usb hardware? How can I > > help to fix it? Or maybe it should be disabled by default. > > I think the HW encription did work in the past, but I'm unsure of the > proper timeline. HW encryption was added in 2.6.29 and it does not work there. In 2.6.30, the driver is broken even more - it does not work even with HW encryption disabled. I'm going to bisect it. -- Ondrej Zary