linux-kernel - [5/9] driver core fixes: bus_add

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Date:	Fri, 22 Sep 2006 11:37:08 +0200
From:	Cornelia Huck <cornelia.huck@...ibm.com>
To:	Greg K-H <greg@...ah.com>
Cc:	linux-kernel <linux-kernel@...r.kernel.org>
Subject: [5/9] driver core fixes: bus_add_device() cleanup on error

From: Cornelia Huck <cornelia.huck@...ibm.com>

Correct cleanup in the error path of bus_add_device().

Signed-off-by: Cornelia Huck <cornelia.huck@...ibm.com>

---
 drivers/base/bus.c |   19 +++++++++++++++----
 1 file changed, 15 insertions(+), 4 deletions(-)

--- linux-2.6-CH.orig/drivers/base/bus.c
+++ linux-2.6-CH/drivers/base/bus.c
@@ -387,18 +387,29 @@ int bus_add_device(struct device * dev)
 		pr_debug("bus %s: add device %s\n", bus->name, dev->bus_id);
 		error = device_add_attrs(bus, dev);
 		if (error)
-			goto out;
+			goto out_put;
 		error = sysfs_create_link(&bus->devices.kobj,
 						&dev->kobj, dev->bus_id);
 		if (error)
-			goto out;
+			goto out_id;
 		error = sysfs_create_link(&dev->kobj,
 				&dev->bus->subsys.kset.kobj, "subsystem");
 		if (error)
-			goto out;
+			goto out_subsys;
 		error = make_deprecated_bus_links(dev);
+		if (error)
+			goto out_deprecated;
 	}
-out:
+	return 0;
+
+out_deprecated:
+	sysfs_remove_link(&dev->kobj, "subsystem");
+out_subsys:
+	sysfs_remove_link(&bus->devices.kobj, dev->bus_id);
+out_id:
+	device_remove_attrs(bus, dev);
+out_put:
+	put_bus(dev->bus);
 	return error;
 }
 
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