Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758481AbXIUNWy (ORCPT ); Fri, 21 Sep 2007 09:22:54 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756931AbXIUNWr (ORCPT ); Fri, 21 Sep 2007 09:22:47 -0400 Received: from ug-out-1314.google.com ([66.249.92.171]:10476 "EHLO ug-out-1314.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751493AbXIUNWq (ORCPT ); Fri, 21 Sep 2007 09:22:46 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:to:subject:mime-version:content-type:content-transfer-encoding:content-disposition; b=tcwH7jBh6iNk3dgDcNrbnETjmSbPZ/Dg0IObJQPH75DtMn9x/2CwvHirPjMj4H7sHytu8f20acs9ME1pXJc7VLibnGoOgOTRLEdxqlLWNxLSaxlxqa5A3DurI3UZIPPiiZ3TvWesIkZdmTXO7qc9xOKjn6Df/9p2mEALfe01HN4= Message-ID: Date: Fri, 21 Sep 2007 14:22:44 +0100 From: "Peter Fordham" To: linux-kernel@vger.kernel.org Subject: fpu IO port reservation (arch/i386) MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 854 Lines: 27 Hi, Does anybody know why we reserve this range of IO ports for 'fpu'? AFAIK from all the IO maps I can find on the internet for various x86 chipsets only 0x00f0 is actaully ever used. ./arch/i386/kernel/setup.c 282 }, { 283 .name = "fpu", 284 .start = 0x00f0, 285 .end = 0x00ff, 286 .flags = IORESOURCE_BUSY | IORESOURCE_IO 287 } }; The reason I ask is that I've written a watchdog driver for a Nexcom MAX6600 server blade type device which has the watchdog control register at 0xF2. Currently request_region fails due to the fpu reservation. regards, Pete Fordham - 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/