diff --git a/drivers/hwmon/lm78.c b/drivers/hwmon/lm78.c
index ed7859f..2c96d8a 100644
--- a/drivers/hwmon/lm78.c
+++ b/drivers/hwmon/lm78.c
@@ -655,7 +655,7 @@
 
 	/* Reserve the ISA region */
 	res = platform_get_resource(pdev, IORESOURCE_IO, 0);
-	if (!request_region(res->start, LM78_EXTENT, "lm78")) {
+	if (!request_region(res->start + LM78_ADDR_REG_OFFSET, 2, "lm78")) {
 		err = -EBUSY;
 		goto exit;
 	}
@@ -699,7 +699,7 @@
 	device_remove_file(&pdev->dev, &dev_attr_name);
 	kfree(data);
  exit_release_region:
-	release_region(res->start, LM78_EXTENT);
+	release_region(res->start + LM78_ADDR_REG_OFFSET, 2);
  exit:
 	return err;
 }
@@ -711,7 +711,7 @@
 	hwmon_device_unregister(data->hwmon_dev);
 	sysfs_remove_group(&pdev->dev.kobj, &lm78_group);
 	device_remove_file(&pdev->dev, &dev_attr_name);
-	release_region(data->client.addr, LM78_EXTENT);
+	release_region(data->client.addr + LM78_ADDR_REG_OFFSET, 2);
 	kfree(data);
 
 	return 0;
@@ -837,8 +837,17 @@
 {
 	int val, save, found = 0;
 
-	if (!request_region(address, LM78_EXTENT, "lm78"))
+	/* We have to request the region in two parts because some
+	   boards declare base+4 to base+7 as a PNP device */
+	if (!request_region(address, 4, "lm78")) {
+		pr_debug("lm78: Failed to request low part of region\n");
 		return 0;
+	}
+	if (!request_region(address + 4, 4, "lm78")) {
+		pr_debug("lm78: Failed to request high part of region\n");
+		release_region(address, 4);
+		return 0;
+	}
 
 #define REALLY_SLOW_IO
 	/* We need the timeouts for at least some LM78-like
@@ -901,7 +910,8 @@
 			val & 0x80 ? "LM79" : "LM78", (int)address);
 
  release:
-	release_region(address, LM78_EXTENT);
+	release_region(address + 4, 4);
+	release_region(address, 4);
 	return found;
 }