diff --git a/drivers/misc/ioc4.c b/drivers/misc/ioc4.c
index b995a15..6a5a05d 100644
--- a/drivers/misc/ioc4.c
+++ b/drivers/misc/ioc4.c
@@ -309,7 +309,7 @@
 		ret = -ENODEV;
 		goto out_pci;
 	}
-	if (!request_region(idd->idd_bar0, sizeof(struct ioc4_misc_regs),
+	if (!request_mem_region(idd->idd_bar0, sizeof(struct ioc4_misc_regs),
 			    "ioc4_misc")) {
 		printk(KERN_WARNING
 		       "%s: Unable to request IOC4 misc region "
@@ -379,7 +379,7 @@
 	return 0;
 
 out_misc_region:
-	release_region(idd->idd_bar0, sizeof(struct ioc4_misc_regs));
+	release_mem_region(idd->idd_bar0, sizeof(struct ioc4_misc_regs));
 out_pci:
 	kfree(idd);
 out_idd:
@@ -418,7 +418,7 @@
 		       "Device removal may be incomplete.\n",
 		       __FUNCTION__, pci_name(idd->idd_pdev));
 	}
-	release_region(idd->idd_bar0, sizeof(struct ioc4_misc_regs));
+	release_mem_region(idd->idd_bar0, sizeof(struct ioc4_misc_regs));
 
 	/* Disable IOC4 and relinquish */
 	pci_disable_device(pdev);
diff --git a/drivers/serial/ioc4_serial.c b/drivers/serial/ioc4_serial.c
index c862f67..f540212 100644
--- a/drivers/serial/ioc4_serial.c
+++ b/drivers/serial/ioc4_serial.c
@@ -2685,7 +2685,7 @@
 		free_irq(control->ic_irq, soft);
 		if (soft->is_ioc4_serial_addr) {
 			iounmap(soft->is_ioc4_serial_addr);
-			release_region((unsigned long)
+			release_mem_region((unsigned long)
 			     soft->is_ioc4_serial_addr,
 				sizeof(struct ioc4_serial));
 		}
@@ -2790,7 +2790,7 @@
 	/* request serial registers */
 	tmp_addr1 = idd->idd_bar0 + IOC4_SERIAL_OFFSET;
 
-	if (!request_region(tmp_addr1, sizeof(struct ioc4_serial),
+	if (!request_mem_region(tmp_addr1, sizeof(struct ioc4_serial),
 					"sioc4_uart")) {
 		printk(KERN_WARNING
 			"ioc4 (%p): unable to get request region for "
@@ -2889,7 +2889,7 @@
 out2:
 	if (serial)
 		iounmap(serial);
-	release_region(tmp_addr1, sizeof(struct ioc4_serial));
+	release_mem_region(tmp_addr1, sizeof(struct ioc4_serial));
 out1:
 
 	return ret;
diff --git a/drivers/sn/ioc3.c b/drivers/sn/ioc3.c
index cd6b653..2dd6eed 100644
--- a/drivers/sn/ioc3.c
+++ b/drivers/sn/ioc3.c
@@ -654,7 +654,7 @@
 		ret = -ENODEV;
 		goto out_pci;
 	}
-	if (!request_region(idd->pma, IOC3_PCI_SIZE, "ioc3")) {
+	if (!request_mem_region(idd->pma, IOC3_PCI_SIZE, "ioc3")) {
 		printk(KERN_WARNING
 		       "%s: Unable to request IOC3 region "
 		       "for pci_dev %s.\n",
@@ -744,7 +744,7 @@
 	return 0;
 
 out_misc_region:
-	release_region(idd->pma, IOC3_PCI_SIZE);
+	release_mem_region(idd->pma, IOC3_PCI_SIZE);
 out_pci:
 	kfree(idd);
 out_idd:
@@ -785,7 +785,7 @@
 	if(idd->dual_irq)
 		free_irq(idd->irq_eth, (void *)idd);
 	iounmap(idd->vma);
-	release_region(idd->pma, IOC3_PCI_SIZE);
+	release_mem_region(idd->pma, IOC3_PCI_SIZE);
 
 	/* Disable IOC3 and relinquish */
 	pci_disable_device(pdev);