[PATCH] cdev 2/2: hide cdev->kobj

The existing cdev interface requires users to deal with the embedded
kobject in two places:

- The kobject name field must be set before adding the cdev, and
- Should cdev_add() fail, a call to kobject_put() is required.

IMO, this exposure of the embedded kobject makes the interface more brittle
and harder to understand.  It's also unnecessary.  With the removal of
/sys/cdev, a call to cdev_del() will nicely replace kobject_put(), and the
name setting is easily wrapped.

This is against 2.6.4, but depends on the /sys/cdev removal patch.

1 files changed, 2 insertions, 0 deletions

diff --git a/include/linux/cdev.h b/include/linux/cdev.h
index f1996ec09e96..b8618f984165 100644
--- a/include/linux/cdev.h
+++ b/include/linux/cdev.h
@@ -25,5 +25,7 @@ void cdev_del(struct cdev *);
 
 void cd_forget(struct inode *);
 
+#define cdev_set_name(cdev, args...) kobject_set_name(&((cdev)->kobj), ##args)
+
 #endif
 #endif