1. 根目录:
2. sound
3. oss
4. mpu401.h

/*	From uart401.c */
int probe_uart401 (struct address_info *hw_config, struct module *owner);
void unload_uart401 (struct address_info *hw_config);

irqreturn_t uart401intr (int irq, void *dev_id);

/*	From mpu401.c */
int probe_mpu401(struct address_info *hw_config, struct resource *ports);
int attach_mpu401(struct address_info * hw_config, struct module *owner);
void unload_mpu401(struct address_info *hw_info);