linux-kernel - Re: [PATCH] staging: rtl8192u/ieee80211: Fix sparse ieee80211_debug_init/

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Date:	Mon, 11 Aug 2014 22:11:13 -0500
From:	Joel Pelaez Jorge <joelpelaez@...il.com>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Jeremiah Mahler <jmmahler@...il.com>
CC:	devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org,
	Teodora Baluta <teobaluta@...il.com>,
	Andrea Merello <andrea.merello@...il.com>,
	Bob Copeland <me@...copeland.com>,
	Joe Perches <joe@...ches.com>, Arnd Bergmann <arnd@...db.de>,
	Himangi Saraogi <himangi774@...il.com>
Subject: Re: [PATCH] staging: rtl8192u/ieee80211: Fix sparse ieee80211_debug_init/_exit
 not declared warning

El 11/08/14 a las 17:32, Greg Kroah-Hartman escibió:
> On Mon, Aug 11, 2014 at 03:15:54PM -0700, Jeremiah Mahler wrote:
>> A sparse warning is generated about 'ieee80211_debug_init' and
>> 'ieee80211_debug_exit' not being declared.
>>
>>   drivers/staging/rtl8192u/ieee80211/ieee80211_module.c:275:12: warning:
>>   symbol 'ieee80211_debug_init' was not declared. Should it be static?
>>   drivers/staging/rtl8192u/ieee80211/ieee80211_module.c:297:13: warning:
>>   symbol 'ieee80211_debug_exit' was not declared. Should it be static?
>>
>> These functions are used outside of this file so using static will not
>> work.  Fix the warning by declaring the functions in the header file,
>> ieee80211.h
>>
>> Signed-off-by: Jeremiah Mahler <jmmahler@...il.com>
>> Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
>> Cc: Teodora Baluta <teobaluta@...il.com>
>> Cc: Andrea Merello <andrea.merello@...il.com>
>> Cc: Joel Pelaez Jorge <joelpelaez@...il.com>
>> Cc: Bob Copeland <me@...copeland.com>
>> Cc: Joe Perches <joe@...ches.com>
>> Cc: Arnd Bergmann <arnd@...db.de>
>> Cc: Himangi Saraogi <himangi774@...il.com>
>> ---
>>  drivers/staging/rtl8192u/ieee80211/ieee80211.h | 6 ++++++
>>  1 file changed, 6 insertions(+)
>>
>> diff --git a/drivers/staging/rtl8192u/ieee80211/ieee80211.h b/drivers/staging/rtl8192u/ieee80211/ieee80211.h
>> index 1040bab..9cbda69 100644
>> --- a/drivers/staging/rtl8192u/ieee80211/ieee80211.h
>> +++ b/drivers/staging/rtl8192u/ieee80211/ieee80211.h
>> @@ -2485,6 +2485,12 @@ extern int ieee80211_wx_set_freq(struct ieee80211_device *ieee, struct iw_reques
>>  extern int ieee80211_wx_get_freq(struct ieee80211_device *ieee, struct iw_request_info *a,
>>  			     union iwreq_data *wrqu, char *b);
>>  
>> +/* ieee80211_module.c */
>> +#ifdef CONFIG_IEEE80211_DEBUG
>> +extern int __init ieee80211_debug_init(void);
>> +extern void __exit ieee80211_debug_exit(void);
>> +#endif /* CONFIG_IEEE80211_DEBUG */
>> +
> 
> As it's a header file, why not always have them here, no need for the
> ifdef.
> 
> And __init and __exit don't belong in a .h function prototype.
> 
> thanks,
> 
> greg k-h
> 
The symbol ieee80211_debug_init(void) and ieee80211_debug_exit(void) are declared as prototype in r8192U_core.c, this cause a double function prototype. It is only a comment, it not affect anything. Check it to next time.

	- Joel
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