--- /dev/null
+Index: linux-2.6.21.1/drivers/leds/Makefile
+===================================================================
+--- linux-2.6.21.1.orig/drivers/leds/Makefile 2007-07-10 20:56:30.000000000 +0200
++++ linux-2.6.21.1/drivers/leds/Makefile 2007-07-19 16:43:07.000000000 +0200
+@@ -16,6 +16,7 @@
+ obj-$(CONFIG_LEDS_WRAP) += leds-wrap.o
+ obj-$(CONFIG_LEDS_H1940) += leds-h1940.o
+ obj-$(CONFIG_LEDS_COBALT) += leds-cobalt.o
++obj-$(CONFIG_LEDS_RB500) += leds-rb500.o
+
+ # LED Triggers
+ obj-$(CONFIG_LEDS_TRIGGER_TIMER) += ledtrig-timer.o
+Index: linux-2.6.21.1/drivers/leds/Kconfig
+===================================================================
+--- linux-2.6.21.1.orig/drivers/leds/Kconfig 2007-07-10 20:56:30.000000000 +0200
++++ linux-2.6.21.1/drivers/leds/Kconfig 2007-07-19 16:42:55.000000000 +0200
+@@ -95,6 +95,12 @@
+ help
+ This option enables support for the front LED on Cobalt Server
+
++config LEDS_RB500
++ tristate "LED Support for RB5xx boards"
++ depends LEDS_CLASS && MIKROTIK_RB500
++ help
++ This option enables support for the yellow user LED on RB5xx boards.
++
+ comment "LED Triggers"
+
+ config LEDS_TRIGGERS