From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751720AbcAUTk2 (ORCPT ); Thu, 21 Jan 2016 14:40:28 -0500 Received: from terminus.zytor.com ([198.137.202.10]:58034 "EHLO mail.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750908AbcAUTkZ (ORCPT ); Thu, 21 Jan 2016 14:40:25 -0500 Subject: Re: [PATCH] base: isa: Remove X86_32 dependency To: William Breathitt Gray , tglx@linutronix.de, mingo@redhat.com References: <20160121155617.GA20054@sophia> Cc: gregkh@linuxfoundation.org, x86@kernel.org, linux-kernel@vger.kernel.org From: "H. Peter Anvin" Message-ID: <56A1341B.3010702@zytor.com> Date: Thu, 21 Jan 2016 11:40:11 -0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.5.0 MIME-Version: 1.0 In-Reply-To: <20160121155617.GA20054@sophia> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 01/21/16 07:56, William Breathitt Gray wrote: > Many motherboards utilize a LPC to ISA bridge in order to decode > ISA-style port-mapped I/O addresses. This is particularly true for > embedded motherboards supporting the PC/104 bus (a bus specification > derived from ISA). > > These motherboards are now commonly running 64-bit x86 processors. The > X86_32 dependency should be removed from the ISA configuration option in > order to support these newer motherboards. > > Signed-off-by: William Breathitt Gray CONFIG_ISA is mainly used to exclude drivers that are for ISA-specific devices. However, PC/104 is indeed an actual ISA parallel bus, and as you say widely used in embedded systems. However, I would like to see if there are anything hidden with !CONFIG_ISA which makes sense in PC104 systems. -hpa