Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932211AbXK2Qg3 (ORCPT ); Thu, 29 Nov 2007 11:36:29 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1758310AbXK2QgR (ORCPT ); Thu, 29 Nov 2007 11:36:17 -0500 Received: from ms-smtp-03.nyroc.rr.com ([24.24.2.57]:42919 "EHLO ms-smtp-03.nyroc.rr.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758259AbXK2QgQ (ORCPT ); Thu, 29 Nov 2007 11:36:16 -0500 Date: Thu, 29 Nov 2007 11:30:34 -0500 (EST) From: Steven Rostedt X-X-Sender: rostedt@gandalf.stny.rr.com To: Remy Bohmer cc: Russell King - ARM Linux , Daniel Walker , RT , linux-kernel , ARM Linux Mailing List , Thomas Gleixner , Ingo Molnar Subject: Re: [PATCH PREEMPT_RT]: On AT91 ARM: GPIO Interrupt handling can/will stall forever In-Reply-To: <3efb10970711290733m59e30b5eyf96b914d63a72058@mail.gmail.com> Message-ID: References: <3efb10970711280638l3f57104y8cf9f2e58235c3@mail.gmail.com> <20071128200550.GA3494@flint.arm.linux.org.uk> <3efb10970711290214v37d85a27k9a84876d9099d7c5@mail.gmail.com> <20071129102506.GB22793@flint.arm.linux.org.uk> <3efb10970711290327s3c60da1ey3b6fae738090ca5@mail.gmail.com> <20071129133604.GA23845@flint.arm.linux.org.uk> <3efb10970711290618v2bd93edfrbc53d9df4b73b33b@mail.gmail.com> <20071129142920.GB23845@flint.arm.linux.org.uk> <3efb10970711290733m59e30b5eyf96b914d63a72058@mail.gmail.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1297 Lines: 37 On Thu, 29 Nov 2007, Remy Bohmer wrote: > I changed the interrupt handler from the simple_irq to the edge_irq, > and it works...!! > (I added a noop routine for that .ack part, because there is no ack) > > I believe I was too focussed on the masking bug in the RT kernel on > the simple_irq() that I did not see that for the AT91 series the edge > type interrupt handler also works... (even better...) What I thought > was 1 single bug in the RT-kernel turned out to be a number of things > together that aren't correct, even for mainline. > > So, to come to a conclusion: The masking bug in RT is still there in > the simple_irq path, and masking has to be removed from the simple_irq > code. Also for mainline. AT91 can live without simple_irq. > I think we are in sync again... > > I will post a patch for the AT91 later on, after some more testing. Remy, Thanks a lot for figuring this out!! Makes me feel better for the NACK ;-) If you also want to send me a patch to remove the masking in the simple_irq code, please do. Thanks, -- Steve - 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/