diff --git a/drivers/misc/fujitsu-laptop.c b/drivers/misc/fujitsu-laptop.c
index 1cfd7f3f1294..e2e7c05a147b 100644
--- a/drivers/misc/fujitsu-laptop.c
+++ b/drivers/misc/fujitsu-laptop.c
@@ -231,7 +231,7 @@ static int acpi_fujitsu_remove(struct acpi_device *device, int type)
 
 	if (!device || !acpi_driver_data(device))
 		return -EINVAL;
-	fujitsu->acpi_handle = 0;
+	fujitsu->acpi_handle = NULL;
 
 	return 0;
 }
diff --git a/drivers/misc/ibmasm/module.c b/drivers/misc/ibmasm/module.c
index 4f9d4a9da983..b5f6add34b0b 100644
--- a/drivers/misc/ibmasm/module.c
+++ b/drivers/misc/ibmasm/module.c
@@ -106,7 +106,7 @@ static int __devinit ibmasm_init_one(struct pci_dev *pdev, const struct pci_devi
 	sp->irq = pdev->irq;
 	sp->base_address = ioremap(pci_resource_start(pdev, 0),
 					pci_resource_len(pdev, 0));
-	if (sp->base_address == 0) {
+	if (!sp->base_address) {
 		dev_err(sp->dev, "Failed to ioremap pci memory\n");
 		result =  -ENODEV;
 		goto error_ioremap;
diff --git a/drivers/misc/lkdtm.c b/drivers/misc/lkdtm.c
index c884730c5eaf..1bfe5d16963b 100644
--- a/drivers/misc/lkdtm.c
+++ b/drivers/misc/lkdtm.c
@@ -197,7 +197,7 @@ static int lkdtm_parse_commandline(void)
 {
 	int i;
 
-	if (cpoint_name == INVALID || cpoint_type == NONE ||
+	if (cpoint_name == NULL || cpoint_type == NULL ||
 					cpoint_count < 1 || recur_count < 1)
 		return -EINVAL;