From: Mark Lord <liml@rtr.ca>
Date: Wed, 11 Mar 2009 04:56:00 +0000 (-0400)
Subject: sata_mv: optimize IRQ coalescing for 8-port chips
X-Git-Tag: v2.6.30-rc1~669^2~7
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6abf4678261218938ccdac90767d34ce9937634f;p=pandora-kernel.git

sata_mv: optimize IRQ coalescing for 8-port chips

Enable use of the "all ports" IRQ coalescing optimization
for GEN_II / GEN_IIE chips that have dual host-controllers (8-ports).
Currently only the 6081 chip qualifies, but other chips may come along someday.

Rather than each half of the chip having to satisfy a local set of coalescing thresholds,
use of this feature groups all ports together under a single set of thresholds.

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