From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeff Garzik Subject: Re: [PATCH] sata_nv: fix ADMA freeze/thaw/irq_clear issues Date: Wed, 09 May 2007 20:17:28 -0400 Message-ID: <46426498.5050205@garzik.org> References: <463CF8E4.6000902@shaw.ca> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from srv5.dvmed.net ([207.36.208.214]:50605 "EHLO mail.dvmed.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755447AbXEJARa (ORCPT ); Wed, 9 May 2007 20:17:30 -0400 In-Reply-To: <463CF8E4.6000902@shaw.ca> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Robert Hancock Cc: linux-kernel , linux-ide@vger.kernel.org, Tejun Heo , Andrew Morton , web01@danzon.com Robert Hancock wrote: > This patch fixes some problems with ADMA-capable controllers with regard > to freeze, > thaw and irq_clear libata callbacks. Freeze and thaw didn't switch the > ADMA-specific > interrupts on or off, and more critically the irq_clear function didn't > respect > the restriction that the notifier clear registers for both ports have to > be written > at the same time even when only one port is being cleared. This could > result in > timeouts on one port when error handling (i.e. as a result of hotplug) > occurred on the other port. > > As well, this fixes some issues in the interrupt handler: we shouldn't > check any > ADMA status if the port has ADMA switched off because of an ATAPI > device, and > it also checks to see if any ADMA interrupt has been raised even when we > are in > port-register mode. > > Signed-off-by: Robert Hancock applied please properly word-wrap your patch descriptions in the future