[patch] add private data to notifier_block

[Kristen Accardi <kristen.c.accardi@intel.com>]

While most current uses of notifier_block use a global struct, I would
like to be able to use it on a per device basis for drivers which have
multiple device instances.  I would also like to be able to have a
private data struct associated with the notifier block so that per
device data can be easily accessed.  This patch will modify the
notifier_block struct to add a void *, and will require no modifications
to any other users of the notifier_block.

Signed-off-by:  Kristen Carlson Accardi <kristen.c.accardi@intel.com>

---
 include/linux/notifier.h |    1 +
 1 files changed, 1 insertion(+)

--- 2.6-git-kca.orig/include/linux/notifier.h
+++ 2.6-git-kca/include/linux/notifier.h
@@ -15,6 +15,7 @@ struct notifier_block
 {
 	int (*notifier_call)(struct notifier_block *self, unsigned long, void *);
 	struct notifier_block *next;
+	void *data;
 	int priority;
 };
 
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