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Date: Wed, 6 Jun 2007 12:05:11 -0400
From: Jeff Garzik <jeff@...zik.org>
To: Tejun Heo <htejun@...il.com>
Cc: Mikael Pettersson <mikpe@...uu.se>, akpm@...ux-foundation.org,
david@...eaves.com, jean.luc.coulon@...il.com, jgarzik@...ox.com,
michal.k.k.piotrowski@...il.com, torvalds@...ux-foundation.org,
linux-kernel@...r.kernel.org
Subject: Re: [REPOST PATCH] sata_promise: use TF interface for polling NODATA commands
FYI to all --
As a reminder. the Promise hardware programs registers when it receives
a SET FEATURES - XFER MODE.
If data transfer is occurring on OTHER ports at the time this is issued,
then data corruption is guaranteed to occur. Polling will not fix this
problem -- all ports need to be inactive, when a SET FEATURES - XFER
MODE command is issued for any port.
Jeff
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