linux-kernel - Re: [PATCH v2] Staging: rtl8192e: Fix sparse warning

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Message-ID: <5341A43A.3020200@gmail.com>
Date:	Sun, 06 Apr 2014 14:00:10 -0500
From:	Joel Pelaez Jorge <joelpelaez@...il.com>
To:	Joe Perches <joe@...ches.com>
CC:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Silvan Jegen <s.jegen@...il.com>, devel@...verdev.osuosl.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] Staging: rtl8192e: Fix sparse warning

El 06/04/14 13:49, Joe Perches escribió:
> On Sun, 2014-04-06 at 13:43 -0500, Joel Pelaez Jorge wrote:
>> Fix a sparse warning, non static symbol is no declared as such.
>> And fix a conflict with static function declared extern to include
>> rtl_wx.h header.
>>
>> drivers/staging/rtl8192e/rtl8192e/rtl_wx.c:1323:24: warning:
>> symbol 'r8192_wx_handlers_def' was not declared. Should it be static?
>>
>> Signed-off-by: Joel Pelaez Jorge <joelpelaez@...il.com>
>> ---
>>    drivers/staging/rtl8192e/rtl8192e/rtl_wx.c |    3 ++-
>>    1 file changed, 2 insertions(+), 1 deletion(-)
>>
>> diff --git a/drivers/staging/rtl8192e/rtl8192e/rtl_wx.c
>> b/drivers/staging/rtl8192e/rtl8192e/rtl_wx.c
>> index 498995d..f17584d 100644
>> --- a/drivers/staging/rtl8192e/rtl8192e/rtl_wx.c
>> +++ b/drivers/staging/rtl8192e/rtl8192e/rtl_wx.c
>> @@ -19,6 +19,7 @@
>>
>>    #include <linux/string.h>
>>    #include "rtl_core.h"
>> +#include "rtl_wx.h"
>>
>>    #define RATE_COUNT 12
>>    static u32 rtl8192_rates[] = {
>> @@ -1293,7 +1294,7 @@ static iw_handler r8192_private_handler[] = {
>>    	(iw_handler)r8192_wx_get_PromiscuousMode,
>>    };
>>
>> -static struct iw_statistics *r8192_get_wireless_stats(struct net_device
>> *dev)
>> +struct iw_statistics *r8192_get_wireless_stats(struct net_device *dev)
>>    {
>>    	struct r8192_priv *priv = rtllib_priv(dev);
>>    	struct rtllib_device *ieee = priv->rtllib;
>
> As far as I can tell, there's no reason this should
> be declared in the .h file and it should stay static
> and not be exposed at all.
>
>
In the source "rtl_core.c" is possible to use the symbol
r8192_get_wireless_stats, if WIRELESS_EXT has specifics values.

Although this scenario is unlikely to happen, is better prepare
this code for it.

Also, a better way will be delete 'extern' reference to symbol
in header file and source file.
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