USB2+umass: root mount fails

[Marcel Moolenaar]

On Feb 16, 2009, at 6:03 PM, M. Warner Losh wrote:

> : root_mount_hold() and root_mount_rel() are specifically
> : designed to inform the mountroot code that it needs to
> : wait (or that it should go ahead and mount root).
>
> But it looks like the old usb code didn't call it either...  I think
> old code enumerated right away during boot, while the new code defers
> the enumeration until events can be processed...

Yes, you're right. USB1 used the following:

SYSINIT(usb_cold_explore, SI_SUB_CONFIGURE, SI_ORDER_MIDDLE,
     usb_cold_explore, NULL);

SI_SUB_CONFIGURE didn't complete before all USB busses
were enumerated.

-- 
Marcel Moolenaar
xcllnt at mac.com