From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752542Ab1AQMlO (ORCPT ); Mon, 17 Jan 2011 07:41:14 -0500 Received: from www.tglx.de ([62.245.132.106]:49884 "EHLO www.tglx.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751823Ab1AQMlB (ORCPT ); Mon, 17 Jan 2011 07:41:01 -0500 Date: Mon, 17 Jan 2011 13:40:52 +0100 (CET) From: Thomas Gleixner To: Sven Neumann cc: Daniel Mack , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: Re: resume regression in 2.6.37 In-Reply-To: <1295260580.2060.29.camel@sven> Message-ID: References: <1294933492.2535.23.camel@sven> <1294938961.10740.24.camel@sven> <1295260580.2060.29.camel@sven> User-Agent: Alpine 2.00 (LFD 1167 2008-08-23) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 17 Jan 2011, Sven Neumann wrote: > On Thu, 2011-01-13 at 18:33 +0100, Thomas Gleixner wrote: > > > > Without the revert there is absolutely no sign of resume. With the > > > change reverted I can see that the PXA powers up again, there's an LED > > > showing that the USB controller has power again. Unfortunately there's > > > seems to be another problem and the resume doesn't complete. I've tried > > > to get console output by using no_console_suspend, but there's just > > > gibberish on the console after resume :( > > > > > > Any idea on how to proceed from here? I could perhaps ask our hardware > > > engineer to try find out where exactly we are stuck in the resume. But > > > I'd like to avoid that if possible. > > > > Can you stick a printk into the set_wake() function of that irq chip > > and print the irq and on arguments and the return value . Run that > > with both stock 2.6.37 and the patch reverted. > > pxa3xx_set_wake(31, 1) returns 0 > > Same result with stock 2.6.37 and the patch reverted. Except that > without the patch reverted, the device doesn't power up again. Ok, can we agree that the patch has no functional impact on the set_wake function? And I don't see a reason why reverting that patch results in a working resume. That does not make sense at all. Which compiler version are you using ? Thanks, tglx