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Peter Hutterer authored
Usually we reply INVALID before we reply UNSUPPORTED but that's only for those values where the value is a programming error. But in this case it's a bit more complicated. INVALID is only for the cases where the button doesn't exist on the device, if we don't have button scrolling at all then we have UNSUPPORTED for all. Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
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