From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeff Garzik Subject: Re: IRQ enable/disable BUG in IDE w/shared IRQs Date: Fri, 14 Jan 2011 13:44:17 -0500 Message-ID: <4D309981.5030107@garzik.org> References: <20110113.233259.157492570.davem@davemloft.net> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from mail-qy0-f174.google.com ([209.85.216.174]:62848 "EHLO mail-qy0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752028Ab1ANSoW (ORCPT ); Fri, 14 Jan 2011 13:44:22 -0500 In-Reply-To: Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Thomas Gleixner Cc: David Miller , linux-ide@vger.kernel.org, linux-kernel@vger.kernel.org, marvin@mydatex.cz On 01/14/2011 05:30 AM, Thomas Gleixner wrote: > On Thu, 13 Jan 2011, David Miller wrote: >> I have a hard time believing we've gotten away with this for so long. >> Maybe it really is that rare to share the IDE interrupts with other >> stuff? > > IIRC, the legacy IDE interrupts were 14/15 and those were never shared. Yes, non-shared 14/15 were the 95% common case for the longest time. Sharing IDE interrupts within old-IDE worked FSVO "working", but the interrupt probes were written for a non-shared interrupt, then hacking into working for shared interrupts when PCI first starting showing up on the scene. Jeff