Some WMI implementations do notifies on WMI objects without a _WED method
allow WMI drivers to indicate that _WED should not be called for notifies
on the WMI objects the driver is bound to.
Instead the driver's notify callback will simply be called with a NULL
data argument.
Reported-by: Yauhen Kharuzhy <jekhor@gmail.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20211128190031.405620-3-hdegoede@redhat.com
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