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

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Date:	Wed, 09 Jul 2014 08:48:53 +0400
From:	Anton Protopopov <a.s.protopopov@...il.com>
To:	gregkh <gregkh@...uxfoundation.org>
CC:	devel@...verdev.osuosl.org, abbotti <abbotti@....co.uk>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Staging: comedi: check the return value of kobject_set_name



09.07.2014 08:28, gregkh пишет:
> On Wed, Jul 09, 2014 at 08:24:06AM +0400, Anton Protopopov wrote:
>> 2014-06-09 14:01 GMT+04:00 Ian Abbott <abbotti@....co.uk>:
>>> On 2014-06-07 14:56, Anton Protopopov wrote:
>>>>
>>>> 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(-)
>>>
>>>
>>> Reviewed-by: Ian Abbott <abbotti@....co.uk>
>>
>> This patch was lost, I guess?
> 
> I don't seem to have it anymore in my inbox, please resend.
> 
> greg k-h
> 


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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