From: Shane Huang <shane.huang@amd.com>
Date: Fri, 7 Aug 2009 07:05:52 +0000 (+0800)
Subject: ahci: kill @force_restart and refine CLO for ahci_kick_engine()
X-Git-Tag: v2.6.32-rc1~717^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=78d5ae39af19a02a3d16213c0f62930d9a5d25f7;p=pandora-kernel.git

ahci: kill @force_restart and refine CLO for ahci_kick_engine()

This patch refines ahci_kick_engine() after discussion with Tejun about
FBS(FIS-based switching) support preparation:
a. Kill @force_restart and always kick the engine. The only case where
   @force_restart is zero is when it's called from ahci_p5wdh_hardreset()
   Actually at that point, BSY is pretty much guaranteed to be set.
b. If PMP is attached, ignore busy and always do CLO. (AHCI-1.3 9.2)

Signed-off-by: Shane Huang <shane.huang@amd.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
---

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