diff --git a/drivers/scsi/ahci.c b/drivers/scsi/ahci.c
index 4cfb257a0f67..31065261de8e 100644
--- a/drivers/scsi/ahci.c
+++ b/drivers/scsi/ahci.c
@@ -995,8 +995,7 @@ static int ahci_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
 	probe_ent->dev = pci_dev_to_dev(pdev);
 	INIT_LIST_HEAD(&probe_ent->node);
 
-	mmio_base = ioremap(pci_resource_start(pdev, AHCI_PCI_BAR),
-		            pci_resource_len(pdev, AHCI_PCI_BAR));
+	mmio_base = pci_iomap(pdev, AHCI_PCI_BAR, 0);
 	if (mmio_base == NULL) {
 		rc = -ENOMEM;
 		goto err_out_free_ent;
@@ -1040,7 +1039,7 @@ static int ahci_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
 err_out_hpriv:
 	kfree(hpriv);
 err_out_iounmap:
-	iounmap(mmio_base);
+	pci_iounmap(pdev, mmio_base);
 err_out_free_ent:
 	kfree(probe_ent);
 err_out_msi:
@@ -1081,7 +1080,7 @@ static void ahci_remove_one (struct pci_dev *pdev)
 	}
 
 	kfree(hpriv);
-	iounmap(host_set->mmio_base);
+	pci_iounmap(pdev, host_set->mmio_base);
 	kfree(host_set);
 
 	if (have_msi)
diff --git a/drivers/scsi/ata_piix.c b/drivers/scsi/ata_piix.c
index 90c53b88a1ee..deec0cef88d9 100644
--- a/drivers/scsi/ata_piix.c
+++ b/drivers/scsi/ata_piix.c
@@ -584,7 +584,6 @@ static void pci_enable_intx(struct pci_dev *pdev)
 static int piix_disable_ahci(struct pci_dev *pdev)
 {
 	void __iomem *mmio;
-	unsigned long addr;
 	u32 tmp;
 	int rc = 0;
 
@@ -592,11 +591,11 @@ static int piix_disable_ahci(struct pci_dev *pdev)
 	 * works because this device is usually set up by BIOS.
 	 */
 
-	addr = pci_resource_start(pdev, AHCI_PCI_BAR);
-	if (!addr || !pci_resource_len(pdev, AHCI_PCI_BAR))
+	if (!pci_resource_start(pdev, AHCI_PCI_BAR) ||
+	    !pci_resource_len(pdev, AHCI_PCI_BAR))
 		return 0;
 
-	mmio = ioremap(addr, 64);
+	mmio = pci_iomap(pdev, AHCI_PCI_BAR, 64);
 	if (!mmio)
 		return -ENOMEM;
 
@@ -610,7 +609,7 @@ static int piix_disable_ahci(struct pci_dev *pdev)
 			rc = -EIO;
 	}
 
-	iounmap(mmio);
+	pci_iounmap(pdev, mmio);
 	return rc;
 }
 
diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c
index dee4b12b0342..1fe20f76fb50 100644
--- a/drivers/scsi/libata-core.c
+++ b/drivers/scsi/libata-core.c
@@ -4200,6 +4200,15 @@ ata_probe_ent_alloc(struct device *dev, struct ata_port_info *port)
 
 
 
+#ifdef CONFIG_PCI
+
+void ata_pci_host_stop (struct ata_host_set *host_set)
+{
+	struct pci_dev *pdev = to_pci_dev(host_set->dev);
+
+	pci_iounmap(pdev, host_set->mmio_base);
+}
+
 /**
  *	ata_pci_init_native_mode - Initialize native-mode driver
  *	@pdev:  pci device to be initialized
@@ -4212,7 +4221,6 @@ ata_probe_ent_alloc(struct device *dev, struct ata_port_info *port)
  *	ata_probe_ent structure should then be freed with kfree().
  */
 
-#ifdef CONFIG_PCI
 struct ata_probe_ent *
 ata_pci_init_native_mode(struct pci_dev *pdev, struct ata_port_info **port)
 {
@@ -4595,6 +4603,7 @@ EXPORT_SYMBOL_GPL(ata_scsi_simulate);
 
 #ifdef CONFIG_PCI
 EXPORT_SYMBOL_GPL(pci_test_config_bits);
+EXPORT_SYMBOL_GPL(ata_pci_host_stop);
 EXPORT_SYMBOL_GPL(ata_pci_init_native_mode);
 EXPORT_SYMBOL_GPL(ata_pci_init_one);
 EXPORT_SYMBOL_GPL(ata_pci_remove_one);
diff --git a/drivers/scsi/sata_nv.c b/drivers/scsi/sata_nv.c
index 03d9bc6e69df..a1d62dee3be6 100644
--- a/drivers/scsi/sata_nv.c
+++ b/drivers/scsi/sata_nv.c
@@ -351,6 +351,7 @@ static void nv_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val)
 static void nv_host_stop (struct ata_host_set *host_set)
 {
 	struct nv_host *host = host_set->private_data;
+	struct pci_dev *pdev = to_pci_dev(host_set->dev);
 
 	// Disable hotplug event interrupts.
 	if (host->host_desc->disable_hotplug)
@@ -358,7 +359,8 @@ static void nv_host_stop (struct ata_host_set *host_set)
 
 	kfree(host);
 
-	ata_host_stop(host_set);
+	if (host_set->mmio_base)
+		pci_iounmap(pdev, host_set->mmio_base);
 }
 
 static int nv_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
@@ -420,8 +422,7 @@ static int nv_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
 	if (host->host_flags & NV_HOST_FLAGS_SCR_MMIO) {
 		unsigned long base;
 
-		probe_ent->mmio_base = ioremap(pci_resource_start(pdev, 5),
-				pci_resource_len(pdev, 5));
+		probe_ent->mmio_base = pci_iomap(pdev, 5, 0);
 		if (probe_ent->mmio_base == NULL) {
 			rc = -EIO;
 			goto err_out_free_host;
@@ -457,7 +458,7 @@ static int nv_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
 
 err_out_iounmap:
 	if (host->host_flags & NV_HOST_FLAGS_SCR_MMIO)
-		iounmap(probe_ent->mmio_base);
+		pci_iounmap(pdev, probe_ent->mmio_base);
 err_out_free_host:
 	kfree(host);
 err_out_free_ent:
diff --git a/drivers/scsi/sata_promise.c b/drivers/scsi/sata_promise.c
index ed54f2810609..538ad727bd2e 100644
--- a/drivers/scsi/sata_promise.c
+++ b/drivers/scsi/sata_promise.c
@@ -92,6 +92,7 @@ static void pdc_exec_command_mmio(struct ata_port *ap, struct ata_taskfile *tf);
 static void pdc_irq_clear(struct ata_port *ap);
 static int pdc_qc_issue_prot(struct ata_queued_cmd *qc);
 
+
 static Scsi_Host_Template pdc_ata_sht = {
 	.module			= THIS_MODULE,
 	.name			= DRV_NAME,
@@ -132,7 +133,7 @@ static struct ata_port_operations pdc_sata_ops = {
 	.scr_write		= pdc_sata_scr_write,
 	.port_start		= pdc_port_start,
 	.port_stop		= pdc_port_stop,
-	.host_stop		= ata_host_stop,
+	.host_stop		= ata_pci_host_stop,
 };
 
 static struct ata_port_operations pdc_pata_ops = {
@@ -153,7 +154,7 @@ static struct ata_port_operations pdc_pata_ops = {
 
 	.port_start		= pdc_port_start,
 	.port_stop		= pdc_port_stop,
-	.host_stop		= ata_host_stop,
+	.host_stop		= ata_pci_host_stop,
 };
 
 static struct ata_port_info pdc_port_info[] = {
@@ -663,8 +664,7 @@ static int pdc_ata_init_one (struct pci_dev *pdev, const struct pci_device_id *e
 	probe_ent->dev = pci_dev_to_dev(pdev);
 	INIT_LIST_HEAD(&probe_ent->node);
 
-	mmio_base = ioremap(pci_resource_start(pdev, 3),
-		            pci_resource_len(pdev, 3));
+	mmio_base = pci_iomap(pdev, 3, 0);
 	if (mmio_base == NULL) {
 		rc = -ENOMEM;
 		goto err_out_free_ent;
diff --git a/drivers/scsi/sata_qstor.c b/drivers/scsi/sata_qstor.c
index 9c99ab433bd3..029c2482e127 100644
--- a/drivers/scsi/sata_qstor.c
+++ b/drivers/scsi/sata_qstor.c
@@ -538,11 +538,12 @@ static void qs_port_stop(struct ata_port *ap)
 static void qs_host_stop(struct ata_host_set *host_set)
 {
 	void __iomem *mmio_base = host_set->mmio_base;
+	struct pci_dev *pdev = to_pci_dev(host_set->dev);
 
 	writeb(0, mmio_base + QS_HCT_CTRL); /* disable host interrupts */
 	writeb(QS_CNFG3_GSRST, mmio_base + QS_HCF_CNFG3); /* global reset */
 
-	ata_host_stop(host_set);
+	pci_iounmap(pdev, mmio_base);
 }
 
 static void qs_host_init(unsigned int chip_id, struct ata_probe_ent *pe)
@@ -646,8 +647,7 @@ static int qs_ata_init_one(struct pci_dev *pdev,
 		goto err_out_regions;
 	}
 
-	mmio_base = ioremap(pci_resource_start(pdev, 4),
-		            pci_resource_len(pdev, 4));
+	mmio_base = pci_iomap(pdev, 4, 0);
 	if (mmio_base == NULL) {
 		rc = -ENOMEM;
 		goto err_out_regions;
@@ -697,7 +697,7 @@ static int qs_ata_init_one(struct pci_dev *pdev,
 	return 0;
 
 err_out_iounmap:
-	iounmap(mmio_base);
+	pci_iounmap(pdev, mmio_base);
 err_out_regions:
 	pci_release_regions(pdev);
 err_out:
diff --git a/drivers/scsi/sata_sil.c b/drivers/scsi/sata_sil.c
index b1a696fcec81..ba98a175ee3a 100644
--- a/drivers/scsi/sata_sil.c
+++ b/drivers/scsi/sata_sil.c
@@ -86,6 +86,7 @@ static u32 sil_scr_read (struct ata_port *ap, unsigned int sc_reg);
 static void sil_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val);
 static void sil_post_set_mode (struct ata_port *ap);
 
+
 static struct pci_device_id sil_pci_tbl[] = {
 	{ 0x1095, 0x3112, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sil_3112_m15w },
 	{ 0x1095, 0x0240, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sil_3112_m15w },
@@ -172,7 +173,7 @@ static struct ata_port_operations sil_ops = {
 	.scr_write		= sil_scr_write,
 	.port_start		= ata_port_start,
 	.port_stop		= ata_port_stop,
-	.host_stop		= ata_host_stop,
+	.host_stop		= ata_pci_host_stop,
 };
 
 static struct ata_port_info sil_port_info[] = {
@@ -231,6 +232,7 @@ MODULE_LICENSE("GPL");
 MODULE_DEVICE_TABLE(pci, sil_pci_tbl);
 MODULE_VERSION(DRV_VERSION);
 
+
 static unsigned char sil_get_device_cache_line(struct pci_dev *pdev)
 {
 	u8 cache_line = 0;
@@ -426,8 +428,7 @@ static int sil_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
        	probe_ent->irq_flags = SA_SHIRQ;
 	probe_ent->host_flags = sil_port_info[ent->driver_data].host_flags;
 
-	mmio_base = ioremap(pci_resource_start(pdev, 5),
-		            pci_resource_len(pdev, 5));
+	mmio_base = pci_iomap(pdev, 5, 0);
 	if (mmio_base == NULL) {
 		rc = -ENOMEM;
 		goto err_out_free_ent;
diff --git a/drivers/scsi/sata_svw.c b/drivers/scsi/sata_svw.c
index d48de9547fb3..d89d968bedac 100644
--- a/drivers/scsi/sata_svw.c
+++ b/drivers/scsi/sata_svw.c
@@ -318,7 +318,7 @@ static struct ata_port_operations k2_sata_ops = {
 	.scr_write		= k2_sata_scr_write,
 	.port_start		= ata_port_start,
 	.port_stop		= ata_port_stop,
-	.host_stop		= ata_host_stop,
+	.host_stop		= ata_pci_host_stop,
 };
 
 static void k2_sata_setup_port(struct ata_ioports *port, unsigned long base)
@@ -392,8 +392,7 @@ static int k2_sata_init_one (struct pci_dev *pdev, const struct pci_device_id *e
 	probe_ent->dev = pci_dev_to_dev(pdev);
 	INIT_LIST_HEAD(&probe_ent->node);
 
-	mmio_base = ioremap(pci_resource_start(pdev, 5),
-		            pci_resource_len(pdev, 5));
+	mmio_base = pci_iomap(pdev, 5, 0);
 	if (mmio_base == NULL) {
 		rc = -ENOMEM;
 		goto err_out_free_ent;
diff --git a/drivers/scsi/sata_sx4.c b/drivers/scsi/sata_sx4.c
index 38b3dd2d7504..540a85191172 100644
--- a/drivers/scsi/sata_sx4.c
+++ b/drivers/scsi/sata_sx4.c
@@ -245,13 +245,14 @@ static struct pci_driver pdc_sata_pci_driver = {
 
 static void pdc20621_host_stop(struct ata_host_set *host_set)
 {
+	struct pci_dev *pdev = to_pci_dev(host_set->dev);
 	struct pdc_host_priv *hpriv = host_set->private_data;
 	void *dimm_mmio = hpriv->dimm_mmio;
 
-	iounmap(dimm_mmio);
+	pci_iounmap(pdev, dimm_mmio);
 	kfree(hpriv);
 
-	ata_host_stop(host_set);
+	pci_iounmap(pdev, host_set->mmio_base);
 }
 
 static int pdc_port_start(struct ata_port *ap)
@@ -1418,8 +1419,7 @@ static int pdc_sata_init_one (struct pci_dev *pdev, const struct pci_device_id *
 	probe_ent->dev = pci_dev_to_dev(pdev);
 	INIT_LIST_HEAD(&probe_ent->node);
 
-	mmio_base = ioremap(pci_resource_start(pdev, 3),
-		            pci_resource_len(pdev, 3));
+	mmio_base = pci_iomap(pdev, 3, 0);
 	if (mmio_base == NULL) {
 		rc = -ENOMEM;
 		goto err_out_free_ent;
@@ -1433,8 +1433,7 @@ static int pdc_sata_init_one (struct pci_dev *pdev, const struct pci_device_id *
 	}
 	memset(hpriv, 0, sizeof(*hpriv));
 
-	dimm_mmio = ioremap(pci_resource_start(pdev, 4),
-			    pci_resource_len(pdev, 4));
+	dimm_mmio = pci_iomap(pdev, 4, 0);
 	if (!dimm_mmio) {
 		kfree(hpriv);
 		rc = -ENOMEM;
@@ -1481,9 +1480,9 @@ static int pdc_sata_init_one (struct pci_dev *pdev, const struct pci_device_id *
 
 err_out_iounmap_dimm:		/* only get to this label if 20621 */
 	kfree(hpriv);
-	iounmap(dimm_mmio);
+	pci_iounmap(pdev, dimm_mmio);
 err_out_iounmap:
-	iounmap(mmio_base);
+	pci_iounmap(pdev, mmio_base);
 err_out_free_ent:
 	kfree(probe_ent);
 err_out_regions:
diff --git a/drivers/scsi/sata_vsc.c b/drivers/scsi/sata_vsc.c
index 3985f344da4d..cf94e0158a8d 100644
--- a/drivers/scsi/sata_vsc.c
+++ b/drivers/scsi/sata_vsc.c
@@ -252,7 +252,7 @@ static struct ata_port_operations vsc_sata_ops = {
 	.scr_write		= vsc_sata_scr_write,
 	.port_start		= ata_port_start,
 	.port_stop		= ata_port_stop,
-	.host_stop		= ata_host_stop,
+	.host_stop		= ata_pci_host_stop,
 };
 
 static void __devinit vsc_sata_setup_port(struct ata_ioports *port, unsigned long base)
@@ -326,8 +326,7 @@ static int __devinit vsc_sata_init_one (struct pci_dev *pdev, const struct pci_d
 	probe_ent->dev = pci_dev_to_dev(pdev);
 	INIT_LIST_HEAD(&probe_ent->node);
 
-	mmio_base = ioremap(pci_resource_start(pdev, 0),
-		            pci_resource_len(pdev, 0));
+	mmio_base = pci_iomap(pdev, 0, 0);
 	if (mmio_base == NULL) {
 		rc = -ENOMEM;
 		goto err_out_free_ent;
diff --git a/include/linux/libata.h b/include/linux/libata.h
index fc05a9899288..bd0f79dfb9cd 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -450,6 +450,7 @@ struct pci_bits {
 	unsigned long		val;
 };
 
+extern void ata_pci_host_stop (struct ata_host_set *host_set);
 extern struct ata_probe_ent *
 ata_pci_init_native_mode(struct pci_dev *pdev, struct ata_port_info **port);
 extern int pci_test_config_bits(struct pci_dev *pdev, struct pci_bits *bits);