return readl((void *) ap->ioaddr.scr_addr + (sc_reg * 4));
return readl((void __iomem *) ap->ioaddr.scr_addr + (sc_reg * 4));
static u32 ahci_scr_read (struct ata_port *ap, unsigned int sc_reg_in){	unsigned int sc_reg;	switch (sc_reg_in) {	case SCR_STATUS:	sc_reg = 0; break;	case SCR_CONTROL:	sc_reg = 1; break;	case SCR_ERROR:		sc_reg = 2; break;	case SCR_ACTIVE:	sc_reg = 3; break;	default:		return 0xffffffffU;	}	return readl((void *) ap->ioaddr.scr_addr + (sc_reg * 4));}