From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tejun Heo Subject: Re: [PATCH 06/11] libata-eh: implement BMDMA EH Date: Sun, 14 May 2006 08:41:28 +0900 Message-ID: <44666EA8.6050201@gmail.com> References: <1147353687173-git-send-email-htejun@gmail.com> <44665BEE.5020903@pobox.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from wx-out-0102.google.com ([66.249.82.202]:28131 "EHLO wx-out-0102.google.com") by vger.kernel.org with ESMTP id S964810AbWEMXle (ORCPT ); Sat, 13 May 2006 19:41:34 -0400 Received: by wx-out-0102.google.com with SMTP id i29so345022wxd for ; Sat, 13 May 2006 16:41:33 -0700 (PDT) In-Reply-To: <44665BEE.5020903@pobox.com> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Jeff Garzik Cc: alan@lxorguk.ukuu.org.uk, axboe@suse.de, albertcc@tw.ibm.com, forrest.zhao@intel.com, efalk@google.com, linux-ide@vger.kernel.org Jeff Garzik wrote: > > What's the plan for the class of PATA controllers without Device Control > shadow registers? > > There are multiple examples of such in drivers/ide... > > I ACK the patch's content, but don't forget we definitely need a plan > for PATA controllers without nIEN support. I can't think of any solution other than ack'ing and clearing interrupts blindly while frozen. * it only happens from the freezing point until the device/controller is reset. * we can't detect spurious interrupts during that period but nothing else is lost. Also, please note that most traditional IDE controllers tend to have their own IRQ. -- tejun