[PATCH 2/2] input: make the Input Core be the last in the poller queue

Sascha Hauer s.hauer at pengutronix.de
Fri Mar 11 06:51:57 PST 2016

On Fri, Mar 11, 2016 at 03:25:01PM +0300, Aleksey Kuleshov wrote:
> > Here it is. It now works, presumable because of your recent change to
> > the interrupt transactions (ehci-hcd: preserve DTC in QH for interrupt
> > transactions).
> I don't know what you mean, but this patch almost worked. I slightly changed it
> and I get working patch: I tested 4 keyboards, only one of them (some Genius)
> behave strangely, but this is not related to my recent patch you mentioned.
> For Genius keyboard I got these messages:
>     Bus 001 Device 003: ID 1c4f:0026 USB Keyboard
>     usb-keyboard usb1-0-2: USB keyboard found
>     usb-keyboard usb1-0-2: Timeout poll on interrupt endpoint
>     usb-keyboard usb1-0-2: got wrong buffer back (00000000 instead of 82130fd8)
> And tons of such messages:
>     usb-keyboard usb1-0-2: usb_submit_int_msg() failed. Keyboard disconnect?
> when there was screen scrolling (which is very slow in my case).
> Can you elaborate a little what does not work in your case?

You misunderstood me. My patch works for me without issues. The question
is why it does, because last time I tested it it didn't work. I assume
that your "ehci-hcd: preserve DTC in QH for interrupt transactions"
patch which is now in my tree *fixes* the behaviour for me.

> PS. Right now, I'm trying to investigate strange behaviour of Genius keyboard.
> I think next week I'll send you patch on your patch.



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