From 8f767f8a02e6c65d393fd0f2ca19a91c9898cc2d Mon Sep 17 00:00:00 2001
From: Mark Lord <liml@rtr.ca>
Date: Sat, 19 Apr 2008 14:53:07 -0400
Subject: [PATCH] sata_mv: more interrupt handling rework

Continue fixing the interrupt handling logic.

Get rid of mv_intr_pio(), by using ata_sff_host_intr() for PIO..

Add a mv_unexpected_intr() catch-all for "impossible" scenarios,
where we get an interrupt that shouldn't have happened
(never seen in testing, but just in case..).

Rearrange the logic so that we always process completed
response queue entries before looking for other events,
This avoids having to re-issue commands that had already succeeded.

As part of this, we split out some duplicated functionality
into a new function, mv_get_active_qc().

Signed-off-by: Mark Lord <mlord@pobox.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
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