tree 03bf0b2abfd9389dbadb69f024aa2761c28b9a5f
parent f1a58ecae527fc67c87ce4dcb9e73894f64aadfe
author Tejun Heo <htejun@gmail.com> 1156248406 +0900
committer Jeff Garzik <jeff@garzik.org> 1156402284 -0400

[PATCH] ata_piix: ignore PCS on ICH5

There have been a number of reports regarding some ICH5s failing to
detect devices since the PCS handling update.  Analysis shows that
these problems are caused by bogus PCS values from those controllers.

Before the PCS update, the driver didn't honor PCS regs exactly and
probed them in many cases PCS reports no device.  Now that PCS is
honored exactly, these hardware problems are visible.

This patch makes ICH5 ignore PCS.

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