From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrea Righi Subject: Re: commit 66c1ca breaks fbdev mode switching Date: Mon, 6 Apr 2009 23:45:29 +0200 Message-ID: <20090406214528.GA17259@linux> References: <498817E2.3020008@gmail.com> <1233783983-28802-1-git-send-email-righi.andrea@gmail.com> <200903221748.42871.arvidjaar@gmail.com> <200903221857.20473.rjw@sisk.pl> <20090322145219.ad294615.akpm@linux-foundation.org> <20090406204718.ce4909b3.krzysztof.h1@poczta.fm> Mime-Version: 1.0 Return-path: Content-Disposition: inline In-Reply-To: <20090406204718.ce4909b3.krzysztof.h1@poczta.fm> Sender: linux-kernel-owner@vger.kernel.org List-ID: Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Krzysztof Helt Cc: Andrew Morton , "Rafael J. Wysocki" , Andrey Borzenkov , Geert Uytterhoeven , "Antonino A. Daplas" , linux-fbdev-devel@lists.sourceforge.net, linux-pm@lists.linux-foundation.org, linux-kernel@vger.kernel.org, Dave Jones , Harvey Harrison , Johannes Weiner , Stefan Richter On Mon, Apr 06, 2009 at 08:47:18PM +0200, Krzysztof Helt wrote: > Hi, > > The commit 66c1ca breaks fbdev mode switching. The first mode > (selected with mode_option or during boot) is ok but every mode > switch with fbset locks up computer. If the commit is reverted > mode switching works correctly. > > I do not understand why. I would be grateful if someone else > can confirm the problem as well. > > The commit's details are: > > commit 66c1ca019078220dc1bf968f2bb18421100ef147 > Author: Andrea Righi > Date: Tue Mar 31 15:25:18 2009 -0700 > > fbmem: fix fb_info->lock and mm->mmap_sem circular locking dependency > > > Regards, > Krzysztof Any lockdep info or oops? it just locks up the system? Thanks, -Andrea