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Currently, the WMI driver core knows how many instances of a given WMI object exist, but WMI drivers cannot access this information. At the same time, some current and upcoming WMI drivers want to have access to this information. Add wmi_instance_count() and wmidev_instance_count() to allow WMI drivers to get the number of WMI object instances. Signed-off-by: Armin Wolf <[email protected]> Link: https://lore.kernel.org/r/[email protected] Reviewed-by: Hans de Goede <[email protected]> Signed-off-by: Hans de Goede <[email protected]>