blinkm_led
#define led_cdev_to_blmled(c) container_of(c, struct blinkm_led, cdev.led_cdev)
#define mcled_cdev_to_led(c) container_of(c, struct blinkm_led, cdev.mcled_cdev)
struct blinkm_led *led = mcled_cdev_to_led(mcled_cdev);
struct blinkm_led *led = led_cdev_to_blmled(led_cdev);
struct blinkm_led blinkm_leds[NUM_LEDS];
struct blinkm_led *leds[NUM_LEDS];
struct blinkm_led *mc_led;