On Mon, Dec 18, 2017 at 7:46 AM, Greentime Hu <green.hu@xxxxxxxxx> wrote: > +#define __ASM_NDS32_IO_H > + > +extern void iounmap(void __iomem *addr); The prototype here should probably include 'volatile' to avoid warnings in an allmodconfig build. Arnd -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html