From mboxrd@z Thu Jan  1 00:00:00 1970
From: elfring@users.sourceforge.net (SF Markus Elfring)
Date: Wed, 19 Nov 2014 08:08:31 +0100
Subject: [Cocci] [PATCH 1/1] kprobes: Deletion of an unnecessary check
 before the function call "module_put"
In-Reply-To: <5469B08E.90104@hitachi.com>
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Message-ID: <546C41EF.4040502@users.sourceforge.net>
To: cocci@systeme.lip6.fr
List-Id: cocci@systeme.lip6.fr

>> index 3995f54..f1e7d45 100644
>> --- a/kernel/kprobes.c
>> +++ b/kernel/kprobes.c
>> @@ -1527,8 +1527,7 @@ int register_kprobe(struct kprobe *p)
>>  out:
>>  	mutex_unlock(&kprobe_mutex);
>>  
>> -	if (probed_mod)
>> -		module_put(probed_mod);
>> +	module_put(probed_mod);
> 
> This is OK, but I you request a comment line over there so that
> code reader can understand it is safe to pass a NULL pointer to
> module_put().

Do you want that I replace the shown null pointer check by a short
comment which repeats an expectation for the affected function call?

Regards,
Markus