Re: [PATCH 1/2] HID: hid-multitouch: refactor last_field_index

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On Thu, Apr 21, 2011 at 02:15:59PM +0200, Benjamin Tissoires wrote:
> the current implementation requires the devices to report
> HID_DG_CONTACTCOUNT to set the last_field_index value.
> However, devices reporting in serial mode (DWAV and PenMount)
> do not send this field.
> Other devices (3M) add other fields in the reports descriptor
> that are not multitouch related at the end, thus the need to
> add a special case in the default case when handling events.
> 
> A first work around has been set up but with PenMount devices,
> we have reached the limit.
> 
> The idea is to calculate the last_field_index by relying only on
> multitouch fields the device send. This allows us to remove
> the handling of non-multitouch events in hid-multitouch, and
> guarantee that the function mt_emit_event is always called.
> 
> Signed-off-by: Benjamin Tissoires <benjamin.tissoires@xxxxxxx>
> ---

Reviewed-and-tested-by: Henrik Rydberg <rydberg@xxxxxxxxxxx>

Thanks,
Henrik
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