linux-kernel - [PATCH] Staging: comedi: check the return value of kobject_set

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Message-Id: <1402149415-20037-1-git-send-email-a.s.protopopov@gmail.com>
Date:	Sat,  7 Jun 2014 17:56:55 +0400
From:	Anton Protopopov <a.s.protopopov@...il.com>
To:	gregkh@...uxfoundation.org
Cc:	abbotti@....co.uk, hsweeten@...ionengravers.com,
	devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org,
	Anton Protopopov <a.s.protopopov@...il.com>
Subject: [PATCH] Staging: comedi: check the return value of kobject_set_name

Added a check of the return value of the kobject_set_name function.

Signed-off-by: Anton Protopopov <a.s.protopopov@...il.com>
---
 drivers/staging/comedi/comedi_fops.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/staging/comedi/comedi_fops.c b/drivers/staging/comedi/comedi_fops.c
index 9d99fb3..dfeefa2 100644
--- a/drivers/staging/comedi/comedi_fops.c
+++ b/drivers/staging/comedi/comedi_fops.c
@@ -2597,7 +2597,14 @@ static int __init comedi_init(void)
 		return -EIO;
 	cdev_init(&comedi_cdev, &comedi_fops);
 	comedi_cdev.owner = THIS_MODULE;
-	kobject_set_name(&comedi_cdev.kobj, "comedi");
+
+	retval = kobject_set_name(&comedi_cdev.kobj, "comedi");
+	if (retval) {
+		unregister_chrdev_region(MKDEV(COMEDI_MAJOR, 0),
+					 COMEDI_NUM_MINORS);
+		return retval;
+	}
+
 	if (cdev_add(&comedi_cdev, MKDEV(COMEDI_MAJOR, 0), COMEDI_NUM_MINORS)) {
 		unregister_chrdev_region(MKDEV(COMEDI_MAJOR, 0),
 					 COMEDI_NUM_MINORS);
-- 
1.8.3.4

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