linux-kernel - [char-misc-next 02/11 V2] mei: bus: Implement driver registration

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Date:	Fri,  8 Feb 2013 14:28:15 +0200
From:	Tomas Winkler <tomas.winkler@...el.com>
To:	gregkh@...uxfoundation.org, sameo@...ux.intel.com
Cc:	arnd@...db.de, linux-kernel@...r.kernel.org,
	Tomas Winkler <tomas.winkler@...el.com>
Subject: [char-misc-next 02/11 V2] mei: bus: Implement driver registration

From: Samuel Ortiz <sameo@...ux.intel.com>

Signed-off-by: Samuel Ortiz <sameo@...ux.intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@...el.com>
---
 drivers/misc/mei/bus.c  |   29 +++++++++++++++++++++++++++++
 include/linux/mei_bus.h |    3 +++
 2 files changed, 32 insertions(+), 0 deletions(-)

diff --git a/drivers/misc/mei/bus.c b/drivers/misc/mei/bus.c
index bb96423c..0a5e624 100644
--- a/drivers/misc/mei/bus.c
+++ b/drivers/misc/mei/bus.c
@@ -153,3 +153,32 @@ void mei_remove_device(struct mei_bus_client *client)
 	device_unregister(&client->dev);
 }
 EXPORT_SYMBOL(mei_remove_device);
+
+int mei_driver_register(struct mei_bus_driver *driver)
+{
+	int err;
+
+	/* Can't register until after driver model init */
+	if (unlikely(WARN_ON(!mei_bus_type.p)))
+		return -EAGAIN;
+
+	driver->driver.owner = THIS_MODULE;
+	driver->driver.bus = &mei_bus_type;
+
+	err = driver_register(&driver->driver);
+	if (err)
+		return err;
+
+	pr_debug("mei: driver [%s] registered\n", driver->driver.name);
+
+	return 0;
+}
+EXPORT_SYMBOL(mei_driver_register);
+
+void mei_driver_unregister(struct mei_bus_driver *driver)
+{
+	driver_unregister(&driver->driver);
+
+	pr_debug("mei: driver [%s] unregistered\n", driver->driver.name);
+}
+EXPORT_SYMBOL(mei_driver_unregister);
diff --git a/include/linux/mei_bus.h b/include/linux/mei_bus.h
index 3a53f9e..0bd1189c 100644
--- a/include/linux/mei_bus.h
+++ b/include/linux/mei_bus.h
@@ -88,4 +88,7 @@ struct mei_bus_driver {
 	int (*remove)(struct mei_bus_client *client);
 };
 
+int mei_driver_register(struct mei_bus_driver *driver);
+void mei_driver_unregister(struct mei_bus_driver *driver);
+
 #endif /* _LINUX_MEI_BUS_H */
-- 
1.7.4.4

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