kern/133593: [ata] `atacontrol spindown` won't affect disk until some data is read from it

[arundel at FreeBSD.org]

Synopsis: [ata] `atacontrol spindown` won't affect disk until some data is read from it

State-Changed-From-To: open->suspended
State-Changed-By: arundel
State-Changed-When: Sun Sep 5 20:01:00 UTC 2010
State-Changed-Why: 
Work on the ATA subsytem has been suspended, because eventually it will get
replaced by CAM.

http://www.freebsd.org/cgi/query-pr.cgi?pr=133593