return readl((void *) ap->ioaddr.scr_addr + (sc_reg * 4));
return readl((void __iomem *) ap->ioaddr.scr_addr + (sc_reg * 4));
static u32 vsc_sata_scr_read (struct ata_port *ap, unsigned int sc_reg){	if (sc_reg > SCR_CONTROL)		return 0xffffffffU;	return readl((void *) ap->ioaddr.scr_addr + (sc_reg * 4));}