On Fri, 8 Mar 2024, Kai-Heng Feng wrote: > AAEON PICO-TGU4 board doesn't have any LED but there are bogus LED > controls under /sys/class/leds: > $ ls /sys/class/leds > asus::kbd_backlight asus::lightbar platform::micmute > > The reason is that the ~0 read from asus_wmi_get_devstate() is treated > as a valid state, in truth it means the device is absent. > > So filter out ~0 read to prevent bogus LED controls being created. > > Signed-off-by: Kai-Heng Feng <kai.heng.feng@xxxxxxxxxxxxx> Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@xxxxxxxxxxxxxxx> -- i.