From a2bbd0c923708a23c6fcc6bbc492f2eecadc676f Mon Sep 17 00:00:00 2001
From: Tejun Heo <htejun@gmail.com>
Date: Wed, 21 Feb 2007 16:34:25 +0900
Subject: [PATCH] ahci: consider SDB FIS containing spurious NCQ completions
 HSM violation (regenerated)

SDB FIS containing spurious NCQ completions is a clear protocol
violation.  Currently, only some Maxtors with early firmware revisions
are showing this problem.  Those firmwares have other NCQ related
problems including buggy NCQ error reporting and occasional lock up
after NCQ errors.

Consider spurious NCQ completions HSM violation and freeze the port
after it.  EH will turn off NCQ after this happens several times.
Eventually drives which show this behavior should be blacklisted for
NCQ.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
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