===== drivers/base/class.c 1.54 vs edited =====
--- 1.54/drivers/base/class.c	2004-10-08 20:32:52 +02:00
+++ edited/drivers/base/class.c	2004-11-04 00:23:56 +01:00
@@ -283,8 +283,27 @@ static int class_hotplug(struct kset *ks
 {
 	struct class_device *class_dev = to_class_dev(kobj);
 	int retval = 0;
+	int i = 0;
+	int length = 0;
 
 	pr_debug("%s - name = %s\n", __FUNCTION__, class_dev->class_id);
+
+	if (class_dev->dev) {
+		/* add physical device backing this class to environment */
+		char *dev = kobject_get_path(&class_dev->dev->kobj, GFP_KERNEL);
+
+		add_hotplug_env_var(envp, num_envp, &i, buffer, buffer_size,
+				    &length, "DEVSYSDEV=%s", dev);
+		kfree(dev);
+
+		/* terminate, set to next free slot, shrink available space */
+		envp[i] = NULL;
+		envp = &envp[i];
+		num_envp -= i;
+		buffer = &buffer[length];
+		buffer_size -= length;
+	}
+
 	if (class_dev->class->hotplug) {
 		/* have the bus specific function add its stuff */
 		retval = class_dev->class->hotplug (class_dev, envp, num_envp,