linux-kernel - Re: [PATCH 3/6] staging: r8188eu: cnt is set but not used

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Message-ID: <184f741c-60ed-fe32-5705-08f9769e926a@gmail.com>
Date:   Sat, 26 Feb 2022 20:32:55 +0300
From:   Pavel Skripkin <paskripkin@...il.com>
To:     Martin Kaiser <martin@...ser.cx>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Larry Finger <Larry.Finger@...inger.net>,
        Phillip Potter <phil@...lpotter.co.uk>,
        Michael Straube <straube.linux@...il.com>,
        linux-staging@...ts.linux.dev, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/6] staging: r8188eu: cnt is set but not used

On 2/26/22 19:57, Pavel Skripkin wrote:
> Hi Martin,
> 
> On 2/26/22 17:48, Martin Kaiser wrote:
>> In function recv_func, the cnt variable is set but not used.
>> It can be removed.
>> 
>> Signed-off-by: Martin Kaiser <martin@...ser.cx>
>> ---
>>   drivers/staging/r8188eu/core/rtw_recv.c | 2 --
>>   1 file changed, 2 deletions(-)
>> 
>> diff --git a/drivers/staging/r8188eu/core/rtw_recv.c b/drivers/staging/r8188eu/core/rtw_recv.c
>> index 0144c4642911..9a2e2bc2e294 100644
>> --- a/drivers/staging/r8188eu/core/rtw_recv.c
>> +++ b/drivers/staging/r8188eu/core/rtw_recv.c
>> @@ -1798,11 +1798,9 @@ static int recv_func(struct adapter *padapter, struct recv_frame *rframe)
>>   	if (check_fwstate(mlmepriv, WIFI_STATION_STATE) &&
>>   	    psecuritypriv->busetkipkey) {
>>   		struct recv_frame *pending_frame;
>> -		int cnt = 0;
>>   
>>   		pending_frame = rtw_alloc_recvframe(&padapter->recvpriv.uc_swdec_pending_queue);
>>   		while (pending_frame) {
> 
> Just out of curiosity: is this thing infinity loop?
> 

Hm.

This function is called only inside a tasklet. IIRC it's not ok to have 
this kind of loops in softirq context




With regards,
Pavel Skripkin