Messages in this thread | | | From | "Henrik Rydberg" <> | Date | Thu, 3 May 2012 14:23:59 +0200 | Subject | Re: [PATCH v3 0/6] hid: Introduce device groups |
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> I'm currently on the bug fix I told you earlier. However, I found a > more problematic bug in the hid_groups functionality. > > Some device, like the Perixx peripad, present several interfaces > (mouse, keyboard and multitouch). > The hid groups functionality detects the HID field Contact ID, and > then forwards all interfaces to hid-multitouch. The point is that > hid-multitouch does not know how to handle mice and keyboards, and > then fails handling the interfaces of the device.
I am a bit unclear as to which devices this applies to, but I see two possible solutions:
1) Add the devices in question back to the have_special_drivers list.
2) Add the interface type to the group descision, which should probably be done anyway. I have a patch in the pipe that, will send it later today.
> This particular device is then fully broken (as anyone pumped the events). > I also noticed the same problem (but less problematic) with cypress > panels: it presents different vendor interfaces and they are handled > by hid-multitouch.
It would be great if you could test soution 1) before on a device - something seems wrong if those interfaces were handled by hid-generic before, but before getting the logic straight, it does not hurt to try. :-)
Thanks, Henrik
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