From e40060772d85f3534d3d517197696e24bb01f45b Mon Sep 17 00:00:00 2001
From: Mark Lord <liml@rtr.ca>
Date: Wed, 14 May 2008 09:19:30 -0400
Subject: [PATCH] sata_mv: fis irq register fixes

Fix handling of the FIS_IRQ_CAUSE register in sata_mv.

This register exists *only* on GenIIe devices, so don't bother
writing to it on older chips.  Also, it has to be read/cleared
in mv_err_intr() before clearing the main ERR_IRQ_CAUSE register.

This keeps sata_mv from getting stuck forever on certain error types.

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