diff --git a/drivers/scsi/sata_vsc.c b/drivers/scsi/sata_vsc.c
index cf94e0158a8df5820a28214c92bcf35842fdb33f..877b9fda39650424a18c5905c52f5ee07f954723 100644
--- a/drivers/scsi/sata_vsc.c
+++ b/drivers/scsi/sata_vsc.c
@@ -86,7 +86,7 @@ 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));
+	return readl((void __iomem *) ap->ioaddr.scr_addr + (sc_reg * 4));
 }
 
 
@@ -95,16 +95,16 @@ static void vsc_sata_scr_write (struct ata_port *ap, unsigned int sc_reg,
 {
 	if (sc_reg > SCR_CONTROL)
 		return;
-	writel(val, (void *) ap->ioaddr.scr_addr + (sc_reg * 4));
+	writel(val, (void __iomem *) ap->ioaddr.scr_addr + (sc_reg * 4));
 }
 
 
 static void vsc_intr_mask_update(struct ata_port *ap, u8 ctl)
 {
-	unsigned long mask_addr;
+	void __iomem *mask_addr;
 	u8 mask;
 
-	mask_addr = (unsigned long) ap->host_set->mmio_base +
+	mask_addr = ap->host_set->mmio_base +
 		VSC_SATA_INT_MASK_OFFSET + ap->port_no;
 	mask = readb(mask_addr);
 	if (ctl & ATA_NIEN)
@@ -283,7 +283,7 @@ static int __devinit vsc_sata_init_one (struct pci_dev *pdev, const struct pci_d
 	struct ata_probe_ent *probe_ent = NULL;
 	unsigned long base;
 	int pci_dev_busy = 0;
-	void *mmio_base;
+	void __iomem *mmio_base;
 	int rc;
 
 	if (!printed_version++)