linux-kernel - [PATCH v1 4/5] driver-core: generalize freeing driver private member

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Date:	Fri, 26 Sep 2014 14:57:16 -0700
From:	"Luis R. Rodriguez" <mcgrof@...not-panic.com>
To:	gregkh@...uxfoundation.org, dmitry.torokhov@...il.com,
	tiwai@...e.de, tj@...nel.org, arjan@...ux.intel.com
Cc:	teg@...m.no, rmilasan@...e.com, werner@...e.com, oleg@...hat.com,
	hare@...e.com, bpoirier@...e.de, santosh@...lsio.com,
	pmladek@...e.cz, dbueso@...e.com, mcgrof@...e.com,
	linux-kernel@...r.kernel.org
Subject: [PATCH v1 4/5] driver-core: generalize freeing driver private member

From: "Luis R. Rodriguez" <mcgrof@...e.com>

This will be used later.

Cc: Tejun Heo <tj@...nel.org>
Cc: Arjan van de Ven <arjan@...ux.intel.com>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: linux-kernel@...r.kernel.org
Signed-off-by: Luis R. Rodriguez <mcgrof@...e.com>
---
 drivers/base/bus.c | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/drivers/base/bus.c b/drivers/base/bus.c
index 83e910a..a5f41e4 100644
--- a/drivers/base/bus.c
+++ b/drivers/base/bus.c
@@ -657,6 +657,15 @@ static ssize_t uevent_store(struct device_driver *drv, const char *buf,
 }
 static DRIVER_ATTR_WO(uevent);
 
+static void remove_driver_private(struct device_driver *drv)
+{
+	struct driver_private *priv = drv->p;
+
+	kobject_put(&priv->kobj);
+	kfree(priv);
+	drv->p = NULL;
+}
+
 /**
  * bus_add_driver - Add a driver to the bus.
  * @drv: driver.
@@ -719,9 +728,7 @@ int bus_add_driver(struct device_driver *drv)
 	return 0;
 
 out_unregister:
-	kobject_put(&priv->kobj);
-	kfree(drv->p);
-	drv->p = NULL;
+	remove_driver_private(drv);
 out_put_bus:
 	bus_put(bus);
 	return error;
-- 
2.1.0

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