HID: hid-multitouch: ensure slots are initialized
In case a device does not provide the feature "Maximum Contact Count", or set it at 0, the maxcontacts field may be at 0 while calling input_mt_init_slots. This patch ensures that hid-multitouch will allways report ABS_MT_SLOT and ABS_MT_TRACKING_ID to the user space. This corrects a bug found with some Ilitek devices that has been integrated in 3.0-rc0. Signed-off-by: NBenjamin Tissoires <benjamin.tissoires@enac.fr> Signed-off-by: NJiri Kosina <jkosina@suse.cz>
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