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From: Lin Ming <ming.m.lin@intel.com>
To: Jeff Garzik <jgarzik@pobox.com>, Alan Stern <stern@rowland.harvard.edu>,
        Tejun Heo <tj@kernel.org>
Cc: linux-kernel@vger.kernel.org, linux-ide@vger.kernel.org,
        linux-pm@vger.kernel.org, "Rafael J. Wysocki" <rjw@sisk.pl>
Subject: [RFC][PATCH 4/4] ahci: support hot plug when port/controller is runtime suspended
Date: Thu, 15 Dec 2011 21:12:49 +0800
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This is an empty patch now :)

I use eSATA to test disk hot plug.
With previous 3 patches applied, disk hot plug does not wok
when ahci port/controller is runtime suspended.

There are 2 cases we need to handle for hot plug:

1. port suspended, controller active
   Is IRQ need to be enabled for port to detect hot plug? 

2. port suspended, controller suspended
   Will controller get a PME when hot plug happens?

I'm still investigating hot plug support.

Anyone has comment?

Thanks,
Lin Ming