[SeaBIOS] USB1 devices and CONFIG_THREADS

[Gerd Hoffmann]

On Do, 2013-12-05 at 14:03 +0000, David Woodhouse wrote:
> Just debugged the following:
> 
> ehci_setup() happens. Starts a thread to probe its ports...
> ohci_setup() happens. Starts a thread to probe its ports...
> OHCI probes port zero, decides there's nothing there.
> EHCI probes port zero, decides there's a USB1 device there and gives it
>     away to OHCI... which is never going to see it.
> 
> What's wrong here? I've "fixed" it with a wait_threads() right before
> the ohci_setup() in usb.c and now I can see my keyboard, but that's
> definitely not the right answer.

I think not running configure_ehci() as thread should work too and is a
bit less agressive than wait_threads().  Waits only for the ehci port
probe threads finish (see usb_enumerate() func), not all threads.

> Do we have any kind of hotplug support for USB devices?

No.

cheers,
  Gerd