NEEK Cyclone III edition problem

#define LED_PIO_NAME "/dev/led_pio"

# define LED_PIO_TYPE "altera_avalon_pio"

# define LED_PIO_BASE 0x04404880

# define LED_PIO_SPAN 16

# define LED_PIO_DO_TEST_BENCH_WIRING 0

# define LED_PIO_DRIVEN_SIM_VALUE 0x0000

# define LED_PIO_HAS_TRI 0

# define LED_PIO_HAS_OUT 1

# define LED_PIO_HAS_IN 0

# define LED_PIO_CAPTURE 0

# define LED_PIO_EDGE_TYPE "NONE"

# define LED_PIO_IRQ_TYPE "NONE"

# define LED_PIO_BIT_CLEARING_EDGE_REGISTER 0

# define LED_PIO_DATA_WIDTH 8

# define LED_PIO_FREQ 85000000

# define ALT_MODULE_CLASS_led_pio altera_avalon_pio

in system.h file; led is defined as given above