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Subject: Re: [PATCH] SCSI midlayer power management
From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: James Bottomley <James.Bottomley@SteelEye.com>
Cc: Nathan Bryant <nbryant@optonline.net>, Pavel Machek <pavel@ucw.cz>,
       Linux SCSI Reflector <linux-scsi@vger.kernel.org>,
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       Jeff Garzik <jgarzik@pobox.com>
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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 ?