From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tomi Valkeinen Subject: Re: Bug in linux omap clock framework? Date: Mon, 08 Dec 2008 11:36:07 +0200 Message-ID: <1228728967.8668.72.camel@tubuntu> References: <21FAA8D4A5AB5E4096AC4BE4BF42EB140157D444@vaebe104.NOE.Nokia.com> <1228726770.8668.66.camel@tubuntu> Reply-To: tomi.valkeinen@nokia.com Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Return-path: Received: from smtp.nokia.com ([192.100.122.230]:47007 "EHLO mgw-mx03.nokia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751305AbYLHJgY (ORCPT ); Mon, 8 Dec 2008 04:36:24 -0500 In-Reply-To: Sender: linux-omap-owner@vger.kernel.org List-Id: linux-omap@vger.kernel.org To: ext Paul Walmsley Cc: linux-omap@vger.kernel.org, khilman@deeprootsystems.com On Mon, 2008-12-08 at 02:24 -0700, ext Paul Walmsley wrote: > Hi Tomi, > > On Mon, 8 Dec 2008, Tomi Valkeinen wrote: > > > On Sat, 2008-12-06 at 16:51 -0700, ext Paul Walmsley wrote: > > > > Based on the traceback that you sent, I'd conjecture that probably some > > > part of the DSS subsystem is generating an interrupt via DSS_IRQ; but then > > > dss_iclk ends up disabled, and the MPU INTC is not able to communicate > > > with the DSS, and the INTC wedges. (The aborting access is to 0xd8200098, > > > the INTCPS_PENDING_IRQ0 register, rather than a DSS register.) Probably > > > some IRQs need to be masked before disabling the dss_iclk. > > > > Okay. So, is this a DSS problem or clock framework problem? > > At this point my guess would be that it is a DSS driver problem, but I > don't think it is clear yet. Also, after disabling CONFIG_PM the code doesn't crash anymore... Something is turning powers/clocks off too eagerly? Tomi