linux-kernel - Re: [PATCH] staging: rtl8723au: Fix static symbol sparse warning

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Message-ID: <wrfjwqarfc7d.fsf@ultrasam.lan.trained-monkey.org>
Date:	Sat, 02 Aug 2014 11:55:02 +0200
From:	Jes Sorensen <Jes.Sorensen@...hat.com>
To:	Larry Finger <Larry.Finger@...inger.net>
Cc:	Miguel Oliveira <cmroliv@...il.com>, gregkh@...uxfoundation.org,
	linux-wireless@...r.kernel.org, devel@...verdev.osuosl.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] staging: rtl8723au: Fix static symbol sparse warning

Larry Finger <Larry.Finger@...inger.net> writes:
> On 08/01/2014 08:06 AM, Miguel Oliveira wrote:
>> Fix sparse warning:
>> drivers/staging/rtl8723au/core/rtw_efuse.c:579:5: warning: symbol
>> efuse_GetCurrentSize23a' was not declared. Should it be static?
>> 
>> Signed-off-by: Miguel Oliveira <cmroliv@...il.com>
>> ---
>>  drivers/staging/rtl8723au/include/rtw_efuse.h |    1 +
>>  1 file changed, 1 insertion(+)
>> 
>> diff --git a/drivers/staging/rtl8723au/include/rtw_efuse.h
>> b/drivers/staging/rtl8723au/include/rtw_efuse.h
>> index 07bdc34..304cc71 100644
>> --- a/drivers/staging/rtl8723au/include/rtw_efuse.h
>> +++ b/drivers/staging/rtl8723au/include/rtw_efuse.h
>> @@ -82,6 +82,7 @@ struct pg_pkt_struct {
>>  /*------------------------Export global
>> variable----------------------------*/
>>  
>>  u16	efuse_GetMaxSize23a(struct rtw_adapter *padapter);
>> +int	efuse_GetCurrentSize23a(struct rtw_adapter *padapter, u16 *size);
>>  int rtw_efuse_access23a(struct rtw_adapter *padapter, u8 bRead, u16
>> start_addr, u16 cnts, u8 *data);
>>  int rtw_efuse_map_read23a(struct rtw_adapter *padapter, u16 addr,
>> u16 cnts, u8 *data);
>>  u8 rtw_efuse_map_write(struct rtw_adapter *padapter, u16 addr, u16
>> cnts, u8 *data);
>
> NACK. Whenever Sparse issues this warning, you should first check to see if it
> can be made static. Adding it to a header to make the Sparse warning go away is
> not correct unless some other routine needs it to be globally known. In this
> case, no other routine needs it.
>
> Of course, making it static will lead to the compilation warning that the
> routine is not used. The correct patch is to delete the entire routine as it is
> never called.

Yep, fix it correctly, or don't bother!

Cheers,
Jes
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