linux-kernel - [08/12] driver core fixes: device

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Message-ID: <20060913183854.2dea7c0b@gondolin.boeblingen.de.ibm.com>
Date:	Wed, 13 Sep 2006 18:38:54 +0200
From:	Cornelia Huck <cornelia.huck@...ibm.com>
To:	Greg K-H <greg@...ah.com>
Cc:	linux-kernel <linux-kernel@...r.kernel.org>
Subject: [08/12] driver core fixes: device_add() cleanup on error

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

Check for return code of device_create_file() and correct cleanup in
the error case in device_add().

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

 core.c |   10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

--- linux-2.6.18-rc6/drivers/base/core.c	2006-09-12 16:19:43.000000000 +0200
+++ linux-2.6.18-rc6+CH/drivers/base/core.c	2006-09-12 18:27:55.000000000 +0200
@@ -406,14 +406,16 @@ int device_add(struct device *dev)
 	if (dev->driver)
 		dev->uevent_attr.attr.owner = dev->driver->owner;
 	dev->uevent_attr.store = store_uevent;
-	device_create_file(dev, &dev->uevent_attr);
+	error = device_create_file(dev, &dev->uevent_attr);
+	if (error)
+		goto attrError;
 
 	if (MAJOR(dev->devt)) {
 		struct device_attribute *attr;
 		attr = kzalloc(sizeof(*attr), GFP_KERNEL);
 		if (!attr) {
 			error = -ENOMEM;
-			goto PMError;
+			goto ueventattrError;
 		}
 		attr->attr.name = "dev";
 		attr->attr.mode = S_IRUGO;
@@ -423,7 +425,7 @@ int device_add(struct device *dev)
 		error = device_create_file(dev, attr);
 		if (error) {
 			kfree(attr);
-			goto attrError;
+			goto ueventattrError;
 		}
 
 		dev->devt_attr = attr;
@@ -479,6 +481,8 @@ int device_add(struct device *dev)
 		device_remove_file(dev, dev->devt_attr);
 		kfree(dev->devt_attr);
 	}
+ ueventattrError:
+	device_remove_file(dev, &dev->uevent_attr);
  attrError:
 	kobject_uevent(&dev->kobj, KOBJ_REMOVE);
 	kobject_del(&dev->kobj);
-
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