Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755774AbZCALkV (ORCPT ); Sun, 1 Mar 2009 06:40:21 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752499AbZCALkH (ORCPT ); Sun, 1 Mar 2009 06:40:07 -0500 Received: from mx2.mail.elte.hu ([157.181.151.9]:36985 "EHLO mx2.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751985AbZCALkG (ORCPT ); Sun, 1 Mar 2009 06:40:06 -0500 Date: Sun, 1 Mar 2009 12:39:48 +0100 From: Ingo Molnar To: Sitsofe Wheeler Cc: Venkatesh Pallipadi , dri-devel@lists.sourceforge.net, LKML , Suresh Siddha , Jesse Barnes Subject: Re: [TIP,regression,i915] /dev/dri/card0 is no longer present Message-ID: <20090301113948.GA3602@elte.hu> References: <20090301110455.GA18547@silver.sucs.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20090301110455.GA18547@silver.sucs.org> User-Agent: Mutt/1.5.18 (2008-05-17) X-ELTE-VirusStatus: clean X-ELTE-SpamScore: -1.5 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-1.5 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.2.3 -1.5 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0000] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1402 Lines: 38 * Sitsofe Wheeler wrote: > Hi, > > With the latest -tip /dev/dri/card0 is MIA on my EeePC 900. A bisection > has tracked the probem down to the following commit: > > commit 17581ad812a9abb0182260374ef2e52d4a808a64 > Author: Venkatesh Pallipadi > Date: Tue Feb 24 17:35:14 2009 -0800 > > gpu/drm, x86, PAT: PAT support for io_mapping_* > > Make io_mapping_create_wc and io_mapping_free go through PAT to make sure > that there are no memory type aliases. > > Signed-off-by: Venkatesh Pallipadi > Signed-off-by: Suresh Siddha > Cc: Dave Airlie > Cc: Jesse Barnes > Cc: Eric Anholt > Cc: Keith Packard > Signed-off-by: Ingo Molnar > > Reverting this made /dev/dri/card0 reappear. Here is the > bisection log: Thanks, i've reverted the commit for now. Could you please send a 'dmesg' from the bootup with the failed driver? By all likelyhood an ioremap failure causes a driver failure. Ingo -- 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/