#define page_to_bus(page) (page_to_phys(page))
#define bus_to_virt(addr) (phys_to_virt(addr))
-extern void iounmap(void *addr);
+extern void iounmap(void __iomem *addr);
/*extern void *__ioremap(phys_addr_t address, unsigned long size,
unsigned long flags);*/
extern void __iomem *ioremap(phys_addr_t address, unsigned long size);