From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754001Ab1GEHLF (ORCPT ); Tue, 5 Jul 2011 03:11:05 -0400 Received: from mail-fx0-f52.google.com ([209.85.161.52]:45353 "EHLO mail-fx0-f52.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753664Ab1GEHLE convert rfc822-to-8bit (ORCPT ); Tue, 5 Jul 2011 03:11:04 -0400 From: Arkadiusz Miskiewicz To: Alan Stern Subject: Re: 3.0rc3-rc5: usb stops working after resume from suspend to ram Date: Tue, 5 Jul 2011 09:10:57 +0200 User-Agent: KMail/1.13.7 (Linux/3.0.0-rc6-dirty; KDE/4.6.5; x86_64; ; ) Cc: Kernel development list , USB list , Sarah Sharp References: In-Reply-To: MIME-Version: 1.0 Content-Type: Text/Plain; charset="utf-8" Content-Transfer-Encoding: 8BIT Message-Id: <201107050910.57432.a.miskiewicz@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Monday 04 of July 2011, Alan Stern wrote: > On Mon, 4 Jul 2011, Arkadiusz Miskiewicz wrote: > > On Thursday 30 of June 2011, Alan Stern wrote: > > > And now you know why, more or less -- we still have to figure out the > > > reason for the hang. Probably something goes wrong when cdc-ether is > > > unbound from the wireless device. > > > > Reverting patch below fixes hang. > > > > commit fccf4e86200b8f5edd9a65da26f150e32ba79808 > > Author: Sarah Sharp > > Date: Sun Jun 5 23:22:22 2011 -0700 > > > > USB: Free bandwidth when usb_disable_device is called. > > Ah, very good! That explains everything. Someone else reported a > similar problem that was tracked down to this commit, and I submitted a > fix a few days ago: > > http://marc.info/?l=linux-usb&m=130955300211987&w=2 > > I bet this will fix your problem too. Unfortunately it doesn't fix my problem (rc6 + that patch). usb still hangs after resume and repluging device causes no effect. [ 60.530119] Restarting tasks ... [ 60.530179] hub 5-0:1.0: state 7 ports 2 chg 0000 evt 0000 [ 60.530184] hub 6-0:1.0: state 7 ports 2 chg 0000 evt 0000 [ 60.530188] hub 7-0:1.0: state 7 ports 2 chg 0000 evt 0000 [ 60.530192] hub 8-0:1.0: state 7 ports 2 chg 0000 evt 0000 [ 60.530196] hub 2-0:1.0: state 7 ports 6 chg 0010 evt 0000 [ 60.530205] hub 2-0:1.0: port 4, status 0100, change 0000, 12 Mb/s [ 60.530208] usb 2-4: USB disconnect, device number 2 [ 60.530211] usb 2-4: unregistering device [ 60.530214] usb 2-4: unregistering interface 2-4:1.0 [ 60.530265] usb 2-4: unregistering interface 2-4:1.1 [ 60.540655] done. [ 60.540663] video LNXVIDEO:00: Restoring backlight state [ 60.544420] usb 2-4: unregistering interface 2-4:1.2 [ 60.544478] usb 2-4: unregistering interface 2-4:1.3 [ 60.544727] usb 2-4: unregistering interface 2-4:1.4 [ 60.544834] usb 2-4: unregistering interface 2-4:1.5 [ 60.544861] drivers/usb/core/file.c: removing 0 minor [ 60.544944] usb 2-4: unregistering interface 2-4:1.6 [ 60.544973] drivers/usb/core/file.c: removing 1 minor [ 60.545073] usb 2-4: unregistering interface 2-4:1.7 [ 60.545102] cdc_ether 2-4:1.7: wwan0: unregister 'cdc_ether' usb-0000:00:1d.7-4, Mobile Broadband Network Device > Alan Stern -- Arkadiusz Miśkiewicz PLD/Linux Team arekm / maven.pl http://ftp.pld-linux.org/