Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757072AbYFXCXV (ORCPT ); Mon, 23 Jun 2008 22:23:21 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752288AbYFXCXG (ORCPT ); Mon, 23 Jun 2008 22:23:06 -0400 Received: from idcmail-mo1so.shaw.ca ([24.71.223.10]:62288 "EHLO pd2mo2so.prod.shaw.ca" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751995AbYFXCXD (ORCPT ); Mon, 23 Jun 2008 22:23:03 -0400 Date: Mon, 23 Jun 2008 20:20:41 -0600 From: Robert Hancock Subject: Re: [patch] x86 supports NO_IRQ convention In-reply-to: To: David Brownell Cc: benh@kernel.crashing.org, lkml , Thomas Gleixner , Ingo Molnar , hpa@zytor.com Message-id: <486059F9.6060901@shaw.ca> MIME-version: 1.0 Content-type: text/plain; charset=ISO-8859-1; format=flowed Content-transfer-encoding: 7bit References: User-Agent: Thunderbird 2.0.0.14 (Windows/20080421) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 597 Lines: 15 David Brownell wrote: > On Monday 23 June 2008, Benjamin Herrenschmidt wrote: >> NO_IRQ on x86 is 0 > > There is no such #define for it. > And since zero is used for timer IRQs, it's not invalid. As far as drivers are concerned it is. IRQ 0 is only used by architecture-specific code and is not sharable, so drivers need not be concerned about it. -- 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/