led: test for led->set callback before calling it
...
Registering a LED can fail. If someone calls led_set for such
a LED no set function will be there. Fail gracefully in this
case.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Treewide: remove address of the Free Software Foundation
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The FSF address has changed in the past. Instead of updating it
each time the address changes, just drop it completely treewide.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The LED core itself does not need gpio support, so remove include
so that it compiles on architectures without gpio support.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>