Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758891AbXK0PdY (ORCPT ); Tue, 27 Nov 2007 10:33:24 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1758596AbXK0PdK (ORCPT ); Tue, 27 Nov 2007 10:33:10 -0500 Received: from gateway-1237.mvista.com ([63.81.120.158]:35717 "EHLO gateway-1237.mvista.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758498AbXK0PdH (ORCPT ); Tue, 27 Nov 2007 10:33:07 -0500 Subject: Re: [PATCH PREEMPT_RT]: On AT91 ARM: GPIO Interrupt handling can/will stall forever From: Daniel Walker To: Steven Rostedt Cc: Thomas Gleixner , Ingo Molnar , ARM Linux Mailing List , RT , linux-kernel , Remy Bohmer In-Reply-To: <1196176294.13982.58.camel@localhost.localdomain> References: <3efb10970711260531x5e9f05acgfabdfa885a220192@mail.gmail.com> <3efb10970711260545i419a8352o4ca5248b10d81db5@mail.gmail.com> <1196176294.13982.58.camel@localhost.localdomain> Content-Type: text/plain Date: Tue, 27 Nov 2007 07:25:21 -0800 Message-Id: <1196177122.23808.7.camel@imap.mvista.com> Mime-Version: 1.0 X-Mailer: Evolution 2.10.3 (2.10.3-4.fc7) Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 677 Lines: 19 On Tue, 2007-11-27 at 10:11 -0500, Steven Rostedt wrote: > Thomas, > > Can you ACK or NACK this patch. I know you play with a bunch of > hardware that this patch may affect. > My two cents, I think it's needed (or something like it).. It looks like handle_simple_irq normally expects a custom cascade type handler to unmask on return. When you switch to a threaded handler the cascade handler is gone and can't unmask.. Daniel - 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/