linux-kernel - Re: [PATCH] staging: rtl8723bs: remove an redundant null check before kfree()

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Message-ID: <5DB711AE.1040904@huawei.com>
Date:   Tue, 29 Oct 2019 00:05:02 +0800
From:   zhong jiang <zhongjiang@...wei.com>
To:     Greg KH <gregkh@...uxfoundation.org>
CC:     <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] staging: rtl8723bs: remove an redundant null check before
 kfree()

On 2019/10/25 10:42, Greg KH wrote:
> On Wed, Oct 16, 2019 at 03:38:26PM +0800, zhong jiang wrote:
>> kfree() has taken null pointer into account. hence it is safe to remove
>> the unnecessary check.
>>
>> Signed-off-by: zhong jiang <zhongjiang@...wei.com>
>> ---
>>  drivers/staging/rtl8723bs/core/rtw_xmit.c | 3 +--
>>  1 file changed, 1 insertion(+), 2 deletions(-)
>>
>> diff --git a/drivers/staging/rtl8723bs/core/rtw_xmit.c b/drivers/staging/rtl8723bs/core/rtw_xmit.c
>> index 7011c2a..4597f4f 100644
>> --- a/drivers/staging/rtl8723bs/core/rtw_xmit.c
>> +++ b/drivers/staging/rtl8723bs/core/rtw_xmit.c
>> @@ -2210,8 +2210,7 @@ void rtw_free_hwxmits(struct adapter *padapter)
>>  	struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
>>  
>>  	hwxmits = pxmitpriv->hwxmits;
>> -	if (hwxmits)
>> -		kfree(hwxmits);
>> +	kfree(hwxmits);
>>  }
>>  
>>  void rtw_init_hwxmits(struct hw_xmit *phwxmit, sint entry)
>> -- 
>> 1.7.12.4
>>
> Patch does not apply to my tree :(
>
> .
>
Greg,  Could you apply the patch to your  tree ?

Thanks,
zhong jiang