From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alan Cox Subject: Re: [PATCH] SCSI midlayer power management Date: Wed, 11 Aug 2004 16:21:08 +0100 Sender: linux-scsi-owner@vger.kernel.org Message-ID: <1092237664.19009.23.camel@localhost.localdomain> References: <4119611D.60401@optonline.net> <20040811080935.GA26098@elf.ucw.cz> <411A1B72.1010302@optonline.net> <1092231462.2087.3.camel@mulgrave> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Return-path: Received: from the-village.bc.nu ([81.2.110.252]:54993 "EHLO localhost.localdomain") by vger.kernel.org with ESMTP id S268108AbUHKQXt (ORCPT ); Wed, 11 Aug 2004 12:23:49 -0400 In-Reply-To: <1092231462.2087.3.camel@mulgrave> List-Id: linux-scsi@vger.kernel.org To: James Bottomley Cc: Nathan Bryant , Pavel Machek , Linux SCSI Reflector , Linux Kernel Mailing List , Jeff Garzik On Mer, 2004-08-11 at 14:37, James Bottomley wrote: > Actually, the answer is to most intents and purposes "yes". You are > technically correct: there's no way to disable DMA in SCSI. However, > once a device is quiesced, it has no outstanding commands, so there will > be no outstanding DMA to that device. In addition we are not doing SCSI target so multi-initiator is ok. One question James - what are the rules for power management with SCSI when we provide termpwr to a shared bus ?