void c_can_irq_sync_activities(struct chip_t *chip, struct msgobj_t *obj);
-can_irqreturn_t c_can_irq_handler(int irq, void *dev_id, struct pt_regs *regs);
+int c_can_irq_handler(int irq, struct chip_t *chip);
int c_can_fill_chipspecops(struct chip_t *chip);