From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932436AbVLIVWJ (ORCPT ); Fri, 9 Dec 2005 16:22:09 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932467AbVLIVWI (ORCPT ); Fri, 9 Dec 2005 16:22:08 -0500 Received: from gprs189-60.eurotel.cz ([160.218.189.60]:23955 "EHLO amd.ucw.cz") by vger.kernel.org with ESMTP id S932436AbVLIVWI (ORCPT ); Fri, 9 Dec 2005 16:22:08 -0500 Date: Fri, 9 Dec 2005 22:21:49 +0100 From: Pavel Machek To: Adrian Bunk Cc: Carl-Daniel Hailfinger , Linux Kernel Mailing List , acpi-devel , linux-usb-devel@lists.sourceforge.net, linux-pm@osdl.org Subject: Re: usblp suspend failure with 2.6.15-rc5 Message-ID: <20051209212148.GD4658@elf.ucw.cz> References: <438F3A2F.5090207@gmx.net> <4395DE67.4050101@gmx.net> <20051209211351.GF23349@stusta.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20051209211351.GF23349@stusta.de> X-Warning: Reading this can be dangerous to your mental health. User-Agent: Mutt/1.5.9i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hi! > > since I switched to 2.6.15-rc2-git6, my machine is not able to suspend > > anymore if my USB printer is plugged in. The problem is reproducible. > > > > usb 1-2: new full speed USB device using uhci_hcd and address 3 > > drivers/usb/class/usblp.c: usblp0: USB Bidirectional printer dev 3 if 0 alt > > 0 proto 2 vid 0x04E8 pid 0x3242 > > usbcore: registered new driver usblp > > drivers/usb/class/usblp.c: v0.13: USB Printer Device Class driver > > PM: Preparing system for mem sleep > > Stopping tasks: ==================================================| > > usblp 1-2:1.0: no suspend? > > Could not suspend device 1-2: error -16 > > Some devices failed to suspend > > Restarting tasks... done > > > > > > Earlier kernels (2.6.14.2 and before) worked just fine. > > > > A first search suggests this problem was introduced between > > 2.6.14 and 2.6.15-rc2-git6. Should I try to narrow it down further? > > yes, that would be good. > > In this case, it would also help if you'd open a bug at > bugzilla.kernel.org. Well, usblp does not have any suspend method, and usb probably just started checking... There's also CONFIG_USB_SUSPEND option you may want to play with. Pavel -- Thanks, Sharp!