Re: HID gadget bDeviceClass bug with a VIA VL800 USB controller

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On Wed, Mar 07, 2012 at 04:40:09PM +0100, Orjan Friberg wrote:
> Hi,
> 
> We're using the HID gadget driver as the basis for a multi-touch
> gadget driver.  When connected to a VIA VL800 (3.0) USB controller,
> Windows 7 says:
> 
> "Hardware Id Missing.  Windows cannot identify the device plugged
> into the VIA USB 2 Hub".
> 
> The following patch fixes that problem (and works fine with other
> USB controller drivers, at least Renesas and Intel).
> 
> http://www.usb.org/developers/devclass_docs/HID1_11.pdf is quite
> specific about the HID device class:
> 
> "The bDeviceClass and bDeviceSubClass fields in the Device
> Descriptor should not be used to identify a device as belonging to
> the HID class. Instead use the bInterfaceClass and
> bInterfaceSubClass fields in the Interface descriptor."
> 
> I couldn't find the original rationale for setting the device class
> to "misc" (0xEF).

Thanks for the fix, but I need a "Signed-off-by:" line, as described in
the Documentation/SubmittingPatches file in order to be able to apply
this.

thanks,

greg k-h
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