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

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Message-ID: <5DB794FB.4010203@huawei.com>
Date:   Tue, 29 Oct 2019 09:25:15 +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 2019/10/29 0:24, Greg KH wrote:
> On Tue, Oct 29, 2019 at 12:05:02AM +0800, zhong jiang wrote:
>> 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 ?
> It did not apply, so what do you want me to do with it?
>
> confused,
Could you  receive the patch ? :-)

Thanks,
zhong jiang
> greg k-h
>
> .
>