2 files changed, 57 insertions, 0 deletions

diff --git a/drivers/base/core.c b/drivers/base/core.c
index 5c91d0d81e78..f1228f25efe0 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -94,6 +94,8 @@ static void device_release(struct kobject * kobj)
 
         if (dev->release)
                 dev->release(dev);
+        else if (dev->class && dev->class->dev_release)
+                dev->class->dev_release(dev);
         else {
                 printk(KERN_ERR "Device '%s' does not have a release() function, "
                         "it is broken and must be fixed.\n",
@@ -183,6 +185,15 @@ static int dev_uevent(struct kset *kset, struct kobject *kobj, char **envp,
                 }
         }
 
+        if (dev->class && dev->class->dev_uevent) {
+                /* have the class specific function add its stuff */
+                retval = dev->class->dev_uevent(dev, envp, num_envp, buffer, buffer_size);
+                        if (retval) {
+                                pr_debug("%s - dev_uevent() returned %d\n",
+                                         __FUNCTION__, retval);
+                }
+        }
+
         return retval;
 }
 
@@ -228,6 +239,43 @@ static void device_remove_groups(struct device *dev)
         }
 }
 
+static int device_add_attrs(struct device *dev)
+{
+        struct class *class = dev->class;
+        int error = 0;
+        int i;
+
+        if (!class)
+                return 0;
+
+        if (class->dev_attrs) {
+                for (i = 0; attr_name(class->dev_attrs[i]); i++) {
+                        error = device_create_file(dev, &class->dev_attrs[i]);
+                        if (error)
+                                break;
+                }
+        }
+        if (error)
+                while (--i >= 0)
+                        device_remove_file(dev, &class->dev_attrs[i]);
+        return error;
+}
+
+static void device_remove_attrs(struct device *dev)
+{
+        struct class *class = dev->class;
+        int i;
+
+        if (!class)
+                return;
+
+        if (class->dev_attrs) {
+                for (i = 0; attr_name(class->dev_attrs[i]); i++)
+                        device_remove_file(dev, &class->dev_attrs[i]);
+        }
+}
+
+
 static ssize_t show_dev(struct device *dev, struct device_attribute *attr,
                         char *buf)
 {
@@ -382,6 +430,8 @@ int device_add(struct device *dev)
                 }
         }
 
+        if ((error = device_add_attrs(dev)))
+                goto AttrsError;
         if ((error = device_add_groups(dev)))
                 goto GroupError;
         if ((error = device_pm_add(dev)))
@@ -412,6 +462,8 @@ int device_add(struct device *dev)
  PMError:
         device_remove_groups(dev);
  GroupError:
+        device_remove_attrs(dev);
+ AttrsError:
         if (dev->devt_attr) {
                 device_remove_file(dev, dev->devt_attr);
                 kfree(dev->devt_attr);
@@ -509,6 +561,7 @@ void device_del(struct device * dev)
         }
         device_remove_file(dev, &dev->uevent_attr);
         device_remove_groups(dev);
+        device_remove_attrs(dev);
 
         /* Notify the platform of the removal, in case they
          * need to do anything...
diff --git a/include/linux/device.h b/include/linux/device.h
index 994d3ebd53f4..3122bd25ce42 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -151,12 +151,16 @@ struct class {
 
         struct class_attribute          * class_attrs;
         struct class_device_attribute   * class_dev_attrs;
+        struct device_attribute         * dev_attrs;
 
         int     (*uevent)(struct class_device *dev, char **envp,
                            int num_envp, char *buffer, int buffer_size);
+        int     (*dev_uevent)(struct device *dev, char **envp, int num_envp,
+                                char *buffer, int buffer_size);
 
         void    (*release)(struct class_device *dev);
         void    (*class_release)(struct class *class);
+        void    (*dev_release)(struct device *dev);
 
         int     (*suspend)(struct device *, pm_message_t state);
         int     (*resume)(struct device *);