Please take a look at bug 11703

Hello, Holger, Shaohua.

There's libata dock related bug report.

http://bugzilla.kernel.org/show_bug.cgi?id=11703

What seems to happen is that if the user unplugs the ultrabay drive while the system is suspended, libata never gets notified of the change and tries to access the port during resume resulting in deadlock. Maybe something needs to be done during resume hook?

Thanks.

tejun