Re: DDB not working with USB keyboard at xhci port

[sc dying <sc.dying%gmail.com@localhost>]

On Tue, Aug 22, 2017 at 2:18 PM, Nick Hudson <skrll%netbsd.org@localhost> wrote:
> On 08/21/17 14:56, sc dying wrote:
>>
>> On 2017/08/21 12:00, Nick Hudson wrote:
>>>
>>> On 08/16/17 06:42, sc dying wrote:
>>>>
>>>> When ukbd(4) is a console and connected to USB3 port, you can enter
>>>> into DDB by pressing ALT+CTRL+ESC but console freezes.
>>>> (on HEAD, netbsd-7, netbsd-8)
>>>>
>>>> xhci has two buses, sc->sc_bus is for usb3 and sc->sc_bus2 is for
>>>> usb2.  ukbd is usually connected at Low-Speed, so usbd_set_polling
>>>> sets sc->sc_bus2->ub_usepolling.
>>>> However, xhci.c checks only sc->sc_bus->ub_usepolling, that's why
>>>> xhci_poll does not call xhci_softintr.
>>>>
>>>> I can show a quick dirty patch.
>>>> It assumes ub_usepolling is always set by ukbd at LS/FS/HS.
>>>
>>> Can you test this patch please?
>>
>> It does not work.
>>
>> This patch helps xhci.c but does not usb_schedsoftintr in usb.c.
>
>
> How about this? It's still all pretty ugly, but this should now work...
>
> Nick

Yes, it works.
It's a good idea.

Thank you.