int pccan_init_hw_data(struct candevice_t *candev);
int pccan_init_chip_data(struct candevice_t *candev, int chipnr);
int pccan_init_obj_data(struct chip_t *chip, int objnr);
-void pccan_write_register(unsigned char data, unsigned long address);
+void pccan_write_register(unsigned data, unsigned long address);
unsigned pccan_read_register(unsigned long address);
int pccan_program_irq(struct candevice_t *candev);