linux-kernel - [PATCH 5/5] Eliminate get_driver() and put

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Date:	Tue, 24 Jan 2012 13:35:37 -0500 (EST)
From:	Alan Stern <stern@...land.harvard.edu>
To:	Greg KH <greg@...ah.com>
cc:	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Kernel development list <linux-kernel@...r.kernel.org>
Subject: [PATCH 5/5] Eliminate get_driver() and put_driver()

Now that there are no users of get_driver() or put_driver(), this
patch (as1513) removes those routines completely.

Signed-off-by: Alan Stern <stern@...land.harvard.edu>
CC: Dmitry Torokhov <dmitry.torokhov@...il.com>

---

 drivers/base/driver.c  |   28 ----------------------------
 include/linux/device.h |    2 --
 2 files changed, 30 deletions(-)

Index: usb-3.3/drivers/base/driver.c
===================================================================
--- usb-3.3.orig/drivers/base/driver.c
+++ usb-3.3/drivers/base/driver.c
@@ -153,34 +153,6 @@ int driver_add_kobj(struct device_driver
 }
 EXPORT_SYMBOL_GPL(driver_add_kobj);
 
-/**
- * get_driver - increment driver reference count.
- * @drv: driver.
- */
-struct device_driver *get_driver(struct device_driver *drv)
-{
-	if (drv) {
-		struct driver_private *priv;
-		struct kobject *kobj;
-
-		kobj = kobject_get(&drv->p->kobj);
-		priv = to_driver(kobj);
-		return priv->driver;
-	}
-	return NULL;
-}
-EXPORT_SYMBOL_GPL(get_driver);
-
-/**
- * put_driver - decrement driver's refcount.
- * @drv: driver.
- */
-void put_driver(struct device_driver *drv)
-{
-	kobject_put(&drv->p->kobj);
-}
-EXPORT_SYMBOL_GPL(put_driver);
-
 static int driver_add_groups(struct device_driver *drv,
 			     const struct attribute_group **groups)
 {
Index: usb-3.3/include/linux/device.h
===================================================================
--- usb-3.3.orig/include/linux/device.h
+++ usb-3.3/include/linux/device.h
@@ -238,8 +238,6 @@ struct device_driver {
 extern int __must_check driver_register(struct device_driver *drv);
 extern void driver_unregister(struct device_driver *drv);
 
-extern struct device_driver *get_driver(struct device_driver *drv);
-extern void put_driver(struct device_driver *drv);
 extern struct device_driver *driver_find(const char *name,
 					 struct bus_type *bus);
 extern int driver_probe_done(void);

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