From 96e2c487933e5f69e98fffdcae2c35c78a671c07 Mon Sep 17 00:00:00 2001
From: Mark Lord <liml@rtr.ca>
Date: Sat, 17 May 2008 13:38:00 -0400
Subject: [PATCH] sata_mv: cache main_irq_mask register in hpriv

Part five of simplifying/fixing handling of the main_irq_mask register
to resolve unexpected interrupt issues observed in 2.6.26-rc*.

Keep a cached copy of the main_irq_mask so that we don't have
to stall the CPU to read it on every pass through mv_interrupt.

This significantly speeds up interrupt handling, both for sata_mv,
and for any other driver/device sharing the same PCI IRQ line.

Signed-off-by: Mark Lord <mlord@pobox.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
---
Reading git-format-patch failed