From mboxrd@z Thu Jan 1 00:00:00 1970 From: Benjamin Herrenschmidt Subject: Re: device_suspend() levels [was Re: [patch] ACPI work on aic7xxx] Date: Tue, 27 Jul 2004 21:18:00 -0400 Sender: linux-scsi-owner@vger.kernel.org Message-ID: <1090977479.2006.30.camel@gaston> References: Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Return-path: Received: from gate.crashing.org ([63.228.1.57]:39130 "EHLO gate.crashing.org") by vger.kernel.org with ESMTP id S266752AbUG1BYS (ORCPT ); Tue, 27 Jul 2004 21:24:18 -0400 In-Reply-To: List-Id: linux-scsi@vger.kernel.org To: Andre Hedrick Cc: Nathan Bryant , linux-scsi@vger.kernel.org, Pavel Machek On Mon, 2004-07-26 at 03:32, Andre Hedrick wrote: > Ben, > > Remember to prevent suspend "BRAIN DAMAGE", scsi has host-hba > dma-queue-rings to manage. I have thought about this for a while and have > considered a glass of scotch or two ease the pain. > > SCSI != IDE > > IDE is a simple child by comparison. > > SCSI is painful because the hardware specifically prevents raw low-level > access to the bus-phase. Hi Andre ! That shouldn't be a problem in our case though, but the scsi layer more complicated command queuing mecanism is... Ben.