linux-kernel - Re: [PATCH] staging: mt7621-pinctrl: Use correct pointer type argument for sizeof

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Message-ID: <c6b155a6-28ae-e0f9-b866-4d17e8a45706@huawei.com>
Date:   Mon, 20 Apr 2020 20:34:59 +0800
From:   Jason Yan <yanaijie@...wei.com>
To:     Dan Carpenter <dan.carpenter@...cle.com>
CC:     <gregkh@...uxfoundation.org>, <matthias.bgg@...il.com>,
        <nishkadg.linux@...il.com>, <devel@...verdev.osuosl.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] staging: mt7621-pinctrl: Use correct pointer type
 argument for sizeof



在 2020/4/20 20:19, Dan Carpenter 写道:
> On Mon, Apr 20, 2020 at 08:37:55PM +0800, Jason Yan wrote:
>> Fix the following coccicheck warning:
>>
>> drivers/staging/mt7621-pinctrl/pinctrl-rt2880.c:223:14-36: WARNING: Use
>> correct pointer type argument for sizeof
>>
>> Signed-off-by: Jason Yan <yanaijie@...wei.com>
>> ---
>>   drivers/staging/mt7621-pinctrl/pinctrl-rt2880.c | 2 +-
>>   1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/drivers/staging/mt7621-pinctrl/pinctrl-rt2880.c b/drivers/staging/mt7621-pinctrl/pinctrl-rt2880.c
>> index d0f06790d38f..8883f2a8ea57 100644
>> --- a/drivers/staging/mt7621-pinctrl/pinctrl-rt2880.c
>> +++ b/drivers/staging/mt7621-pinctrl/pinctrl-rt2880.c
>> @@ -220,7 +220,7 @@ static int rt2880_pinmux_index(struct rt2880_priv *p)
>>   	/* allocate our function and group mapping index buffers */
>>   	f = p->func = devm_kcalloc(p->dev,
>>   				   p->func_count,
>> -				   sizeof(struct rt2880_pmx_func),
>> +				   sizeof(struct rt2880_pmx_func *),
> 
> Yes.  This fixes a bug.  We were allocating too much data.  But the
> prefered style is:
> 
> 				sizeof(*p->func),
> 
> Please could you resend?
> 

Sure, I will cook a new one.

> regards,
> dan carpenter
> 
> 
> .
>