1 files changed, 33 insertions, 6 deletions

diff --git a/drivers/base/class.c b/drivers/base/class.c
index 0154a1623b21..d164c32a97ad 100644
--- a/drivers/base/class.c
+++ b/drivers/base/class.c
@@ -299,10 +299,8 @@ static void class_dev_release(struct kobject * kobj)
 
         pr_debug("device class '%s': release.\n", cd->class_id);
 
-        if (cd->devt_attr) {
-                kfree(cd->devt_attr);
-                cd->devt_attr = NULL;
-        }
+        kfree(cd->devt_attr);
+        cd->devt_attr = NULL;
 
         if (cls->release)
                 cls->release(cd);
@@ -452,10 +450,29 @@ void class_device_initialize(struct class_device *class_dev)
         INIT_LIST_HEAD(&class_dev->node);
 }
 
+static char *make_class_name(struct class_device *class_dev)
+{
+        char *name;
+        int size;
+
+        size = strlen(class_dev->class->name) +
+                strlen(kobject_name(&class_dev->kobj)) + 2;
+
+        name = kmalloc(size, GFP_KERNEL);
+        if (!name)
+                return ERR_PTR(-ENOMEM);
+
+        strcpy(name, class_dev->class->name);
+        strcat(name, ":");
+        strcat(name, kobject_name(&class_dev->kobj));
+        return name;
+}
+
 int class_device_add(struct class_device *class_dev)
 {
         struct class * parent = NULL;
         struct class_interface * class_intf;
+        char *class_name = NULL;
         int error;
 
         class_dev = class_device_get(class_dev);
@@ -500,9 +517,13 @@ int class_device_add(struct class_device *class_dev)
         }
 
         class_device_add_attrs(class_dev);
-        if (class_dev->dev)
+        if (class_dev->dev) {
+                class_name = make_class_name(class_dev);
                 sysfs_create_link(&class_dev->kobj,
                                   &class_dev->dev->kobj, "device");
+                sysfs_create_link(&class_dev->dev->kobj, &class_dev->kobj,
+                                  class_name);
+        }
 
         /* notify any interfaces this device is now here */
         if (parent) {
@@ -519,6 +540,7 @@ int class_device_add(struct class_device *class_dev)
         if (error && parent)
                 class_put(parent);
         class_device_put(class_dev);
+        kfree(class_name);
         return error;
 }
 
@@ -584,6 +606,7 @@ void class_device_del(struct class_device *class_dev)
 {
         struct class * parent = class_dev->class;
         struct class_interface * class_intf;
+        char *class_name = NULL;
 
         if (parent) {
                 down(&parent->sem);
@@ -594,8 +617,11 @@ void class_device_del(struct class_device *class_dev)
                 up(&parent->sem);
         }
 
-        if (class_dev->dev)
+        if (class_dev->dev) {
+                class_name = make_class_name(class_dev);
                 sysfs_remove_link(&class_dev->kobj, "device");
+                sysfs_remove_link(&class_dev->dev->kobj, class_name);
+        }
         if (class_dev->devt_attr)
                 class_device_remove_file(class_dev, class_dev->devt_attr);
         class_device_remove_attrs(class_dev);
@@ -605,6 +631,7 @@ void class_device_del(struct class_device *class_dev)
 
         if (parent)
                 class_put(parent);
+        kfree(class_name);
 }
 
 void class_device_unregister(struct class_device *class_dev)