Comment # 21 on bug 1140892 from Oliver Neukum

(In reply to James Wang from comment #20)
> (In reply to Oliver Neukum from comment #19)
> > I need "lsusb -t"
> 
> It's on the reply above

It is truncated. Anyway, according to dmesg the UAS driver does not like your
HC and the host falls back to the old storage driver. That means that we cannot
have a problem with altsettings. Confirmation of "lsusb -t" would be nice
though.

You speculated that it is due to the HD not spinning down. That can be tested.
Install sg_start" and use

sg_start --stop $DEVICE

on the failing device before rebooting.