diff --git a/lm_sensors-3.0.1-virtual-dev.patch b/lm_sensors-3.0.1-virtual-dev.patch
index 85eb98c..56eaeb1 100644
--- a/lm_sensors-3.0.1-virtual-dev.patch
+++ b/lm_sensors-3.0.1-virtual-dev.patch
@@ -1,21 +1,114 @@
+Index: lib/sensors.h
+===================================================================
+--- lib/sensors.h	(revision 5145)
++++ lib/sensors.h	(working copy)
+@@ -30,7 +30,7 @@
+    when the API + ABI breaks), the third digit is incremented to track small
+    API additions like new flags / enum values. The second digit is for tracking
+    larger additions like new methods. */
+-#define SENSORS_API_VERSION 0x400
++#define SENSORS_API_VERSION 0x401
+ 
+ #define SENSORS_CHIP_NAME_PREFIX_ANY NULL
+ #define SENSORS_CHIP_NAME_ADDR_ANY -1
+@@ -40,6 +40,7 @@
+ #define SENSORS_BUS_TYPE_ISA	1
+ #define SENSORS_BUS_TYPE_PCI	2
+ #define SENSORS_BUS_TYPE_SPI	3
++#define SENSORS_BUS_TYPE_VIRT	4
+ #define SENSORS_BUS_NR_ANY	(-1)
+ #define SENSORS_BUS_NR_IGNORE	(-2)
+ 
+Index: lib/access.c
+===================================================================
+--- lib/access.c	(revision 5145)
++++ lib/access.c	(working copy)
+@@ -344,6 +344,8 @@
+ 	   so we don't have any custom string to return. */
+ 	case SENSORS_BUS_TYPE_SPI:
+ 		return "SPI adapter";
++	case SENSORS_BUS_TYPE_VIRT:
++		return "Virtual device";
+ 	}
+ 
+ 	/* bus types with several instances */
 Index: lib/sysfs.c
 ===================================================================
---- lib/sysfs.c	(revision 5142)
+--- lib/sysfs.c	(revision 5145)
 +++ lib/sysfs.c	(working copy)
-@@ -591,8 +591,14 @@
+@@ -475,6 +475,14 @@
+ 	if (!entry.chip.path)
+ 		sensors_fatal_error(__func__, "Out of memory");
+ 
++	if (dev_path == NULL) {
++		/* Virtual device */
++		entry.chip.addr = 0;
++		entry.chip.bus.type = SENSORS_BUS_TYPE_VIRT;
++		entry.chip.bus.nr = 0;
++		goto done;
++	}
++
+ 	/* Find bus type */
+ 	snprintf(linkpath, NAME_MAX, "%s/subsystem", dev_path);
+ 	sub_len = readlink(linkpath, subsys_path, NAME_MAX - 1);
+@@ -543,6 +551,7 @@
+ 		goto exit_free;
+ 	}
+ 
++done:
+ 	if (sensors_read_dynamic_chip(&entry, hwmon_path) < 0)
+ 		goto exit_free;
+ 	if (!entry.subfeature) { /* No subfeature, discard chip */
+@@ -591,16 +600,20 @@
  
  	snprintf(linkpath, NAME_MAX, "%s/device", path);
  	dev_len = readlink(linkpath, device, NAME_MAX - 1);
 -	if (dev_len < 0)
 -		return -SENSORS_ERR_KERNEL;
+-	device[dev_len] = '\0';
+-	device_p = strrchr(device, '/') + 1;
 +	if (dev_len < 0) {
-+		/* virtual device without a device link (for example
-+		   the acpi thermalzone driver) */
-+		err = sensors_read_one_sysfs_chip(path, "virtual", path);
-+		if (err < 0)
-+			return err;
-+		return 0;
-+	}
- 	device[dev_len] = '\0';
- 	device_p = strrchr(device, '/') + 1;
++		/* No device link? Treat as virtual */
++		err = sensors_read_one_sysfs_chip(NULL, NULL, path);
++	} else {
++		device[dev_len] = '\0';
++		device_p = strrchr(device, '/') + 1;
  
+-	/* The attributes we want might be those of the hwmon class device,
+-	   or those of the device itself. */
+-	err = sensors_read_one_sysfs_chip(linkpath, device_p, path);
+-	if (err == 0)
+-		err = sensors_read_one_sysfs_chip(linkpath, device_p, linkpath);
++		/* The attributes we want might be those of the hwmon class
++		   device, or those of the device itself. */
++		err = sensors_read_one_sysfs_chip(linkpath, device_p, path);
++		if (err == 0)
++			err = sensors_read_one_sysfs_chip(linkpath, device_p,
++							  linkpath);
++	}
+ 	if (err < 0)
+ 		return err;
+ 	return 0;
+Index: lib/data.c
+===================================================================
+--- lib/data.c	(revision 5145)
++++ lib/data.c	(working copy)
+@@ -108,6 +108,8 @@
+ 		res->bus.type = SENSORS_BUS_TYPE_PCI;
+ 	else if (!strncmp(name, "spi", dash - name))
+ 		res->bus.type = SENSORS_BUS_TYPE_SPI;
++	else if (!strncmp(name, "virtual", dash - name))
++		res->bus.type = SENSORS_BUS_TYPE_VIRT;
+ 	else
+ 		goto ERROR;
+ 	name = dash + 1;
+@@ -168,6 +170,9 @@
+ 	case SENSORS_BUS_TYPE_SPI:
+ 		return snprintf(str, size, "%s-spi-%hd-%x", chip->prefix,
+ 				chip->bus.nr, chip->addr);
++	case SENSORS_BUS_TYPE_VIRT:
++		return snprintf(str, size, "%s-virtual-%x", chip->prefix,
++				chip->addr);
+ 	}
+ 
+ 	return -SENSORS_ERR_CHIP_NAME;