From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756260AbZDHEyl (ORCPT ); Wed, 8 Apr 2009 00:54:41 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752273AbZDHEyb (ORCPT ); Wed, 8 Apr 2009 00:54:31 -0400 Received: from fmailhost03.isp.att.net ([207.115.11.53]:38921 "EHLO fmailhost03.isp.att.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750871AbZDHEya (ORCPT ); Wed, 8 Apr 2009 00:54:30 -0400 X-Originating-IP: [69.76.240.125] Message-ID: <49DC2DF5.3010603@lwfinger.net> Date: Tue, 07 Apr 2009 23:54:13 -0500 From: Larry Finger User-Agent: Thunderbird 2.0.0.19 (X11/20081227) MIME-Version: 1.0 To: Arjan van de Ven CC: LKML , "Rafael J. Wysocki" , wireless , Rusty Russell Subject: Regression in 2.6.30-rc1 since commit acae0515 - wireless broken Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The most recent pulls of the Linux-2.6 git tree has broken wireless. The problem was bisected with commit acae05156551fd7528fbb616271e672789388e3c, entitled "module: create a request_module_nowait()", indicated as the faulty change. This is seen with driver b43 on my system, and 2 reports for driver iwlagn: http://marc.info/?l=linux-wireless&m=123916157630571&w=2 and http://marc.info/?l=linux-wireless&m=123913015021457&w=2. For b43, the logged error messages are: phy0: Failed to initialize wep: -2 b43: probe of ssb0:0 failed with error -2 With this driver, module ssb is selected from the PCI ID. It then loads b43, which triggers the loading of rfkill, mac80211, cfg80211, led-class, and input-polldev. It appears that the nowait method is killing the chain somewhere. If I unload and reload b43, then all these modules load correctly and wireless works. If this commit is reverted, wireless works OK. I will be happy to try any patches to make request_module_nowait() work with wireless networking. Larry