tree 6a856df3aff0c9611a666faca10079960a1480f2
parent 70b2563b35b3edcf67819b99e560f3f0f6ce4a9f
author Heiner Kallweit <hkallweit1@gmail.com> 1453495428 +0100
committer Jacek Anaszewski <j.anaszewski@samsung.com> 1457943740 +0100

leds: core: avoid error message when a USB LED device is unplugged

When a USB LED device is unplugged the remove call chain calls
led_classdev_unregister which tries to switch the LED off.
As the device has been removed already this results in a ENODEV
error message in dmesg.
Avoid this error message by ignoring ENODEV in calls from
led_classdev_unregister if the LED device is flagged as pluggable.

Therefore a new flag LED_HW_PLUGGABLE was introduced which should be set by
all LED drivers handling pluggable LED devices (mainly USB LED devices).

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>