Re: [PATCH 2/2] input: mt: Document the MT event slot protocol (rev2)

[Henrik Rydberg]

Ping Cheng wrote:
[...]
> This topic is outside of the _MT_ protocol discussion.
> 
> However, it is indeed an issue with all filtered input events, both
> for MT and regular ones.
> 
> I think we need to add an ioctl to enable user land driver/client to
> signal the kernel driver to send all events without filtering, just
> once. Hot-plugged devices and X driver starts after user has contacted
> with the device are two examples that the client would miss filtered
> events.
> 
> Dmitry, do you think it is a valid suggestion?
> 
> I've had this issue for ages (but never had time to work on it :(.

It would be easy to initialize a catch-up when opening the device for a new
client (evdev_open()).

Henrik

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