[CLASS DEVICE]: add attribute_group creation

Extend the support of attribute groups in class_device's to allow
groups to be created as part of the registration process. This allows
network device's to avoid race between registration and creating
groups.

Note that unlike attributes that are a property of the class object,
the groups are a property of the class_device object. This is done
because there are different types of network devices (wireless for
example).

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 0 deletions

diff --git a/include/linux/device.h b/include/linux/device.h
index f6e72a65a3f2..e8e53b9accc6 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -200,6 +200,7 @@ extern int class_device_create_file(struct class_device *,
  * @node: for internal use by the driver core only.
  * @kobj: for internal use by the driver core only.
  * @devt_attr: for internal use by the driver core only.
+ * @groups: optional additional groups to be created
  * @dev: if set, a symlink to the struct device is created in the sysfs
  * directory for this struct class device.
  * @class_data: pointer to whatever you want to store here for this struct
@@ -228,6 +229,7 @@ struct class_device {
         struct device           * dev;          /* not necessary, but nice to have */
         void                    * class_data;   /* class-specific data */
         struct class_device     *parent;        /* parent of this child device, if there is one */
+        struct attribute_group  ** groups;      /* optional groups */
 
         void    (*release)(struct class_device *dev);
         int     (*uevent)(struct class_device *dev, char **envp,