Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751397AbWBEKdx (ORCPT ); Sun, 5 Feb 2006 05:33:53 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751420AbWBEKdx (ORCPT ); Sun, 5 Feb 2006 05:33:53 -0500 Received: from fluido.speedxs.nl ([83.98.238.192]:47628 "EHLO fluido.as") by vger.kernel.org with ESMTP id S1751397AbWBEKdx (ORCPT ); Sun, 5 Feb 2006 05:33:53 -0500 Date: Sun, 5 Feb 2006 11:33:33 +0100 From: "Carlo E. Prelz" To: Andrew Morton , linux-kernel@vger.kernel.org, linux-usb-devel@lists.sourceforge.net Subject: Re: ATI RS480-based motherboard: stuck while booting with kernel >= 2.6.15 rc1 Message-ID: <20060205103333.GA27735@epio.fluido.as> References: <20060120123202.GA1138@epio.fluido.as> <20060121010932.5d731f90.akpm@osdl.org> <20060121125741.GA13470@epio.fluido.as> <20060121125822.570b0d99.akpm@osdl.org> <20060122074034.GA1315@epio.fluido.as> <20060121235546.68f50bd5.akpm@osdl.org> <20060122111112.GA15320@epio.fluido.as> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Content-Disposition: inline In-Reply-To: <20060122111112.GA15320@epio.fluido.as> X-operating-system: Linux epio 2.6.14 User-Agent: Mutt/1.5.11 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1169 Lines: 31 Time has passed without further mention of this problem. Today I took some time to discover exactly where the boot process was hanging. I found the place. In drivers/usb/host/pci-quirks.c, in function quirk_usb_disable_ehci (should start around line 211) there is a stanza that reads: /* always say Linux will own the hardware * by setting EHCI_USBLEGSUP_OS. */ pci_write_config_byte(pdev, offset + 3, 1); On my sapphire athlon64 motherboard (see the thread for more details), this call never returns (without generating any output). I commented it out, and now the EHCI subsystem works OK (currently running 2.6.16rc2). I do not know what the right patch should be. Carlo -- * Se la Strada e la sua Virtu' non fossero state messe da parte, * K * Carlo E. Prelz - fluido@fluido.as che bisogno ci sarebbe * di parlare tanto di amore e di rettitudine? (Chuang-Tzu) - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/