linux-kernel - Re: [PATCH] soc: kunpeng_hccs: fix size

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Date:   Mon, 14 Aug 2023 11:52:18 +0800
From:   "lihuisong (C)" <lihuisong@...wei.com>
To:     Wei Xu <xuwei5@...ilicon.com>, Arnd Bergmann <arnd@...nel.org>
CC:     Arnd Bergmann <arnd@...db.de>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] soc: kunpeng_hccs: fix size_t format string

Thanks Arnd,

Acked-by: Huisong Li <lihuisong@...wei.com>

在 2023/8/14 8:56, Wei Xu 写道:
> Hi Arnd,
>
> On 2023/8/13 1:21, Arnd Bergmann wrote:
>> From: Arnd Bergmann <arnd@...db.de>
>>
>> Printing a size_t using the %lu format string causes a warning on
>> architectures that define the type as 'unsigned int':
>>
>> In file included from include/linux/device.h:15,
>>                   from include/linux/acpi.h:14,
>>                   from drivers/soc/hisilicon/kunpeng_hccs.c:25:
>> drivers/soc/hisilicon/kunpeng_hccs.c: In function 'hccs_get_bd_info':
>> drivers/soc/hisilicon/kunpeng_hccs.c:441:25: error: format '%lu' expects argument of type 'long unsigned int', but argument 3 has type 'size_t' {aka 'unsigned int'} [-Werror=format=]
>>
>> Use the correct %zu format instead.
>>
>> Fixes: 886bdf9c883bc ("soc: hisilicon: Support HCCS driver on Kunpeng SoC")
>> Signed-off-by: Arnd Bergmann <arnd@...db.de>
>> ---
>> I've already applied this one on top of the soc/drivers branch after I
>> merged the branch with the new driver and noticed the regression.
>>
>>   drivers/soc/hisilicon/kunpeng_hccs.c | 2 +-
>>   1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/drivers/soc/hisilicon/kunpeng_hccs.c b/drivers/soc/hisilicon/kunpeng_hccs.c
>> index 6864d203c6782..0d6f6bacd3f62 100644
>> --- a/drivers/soc/hisilicon/kunpeng_hccs.c
>> +++ b/drivers/soc/hisilicon/kunpeng_hccs.c
>> @@ -438,7 +438,7 @@ static int hccs_get_bd_info(struct hccs_dev *hdev, u8 opcode,
>>   	head = &rsp->rsp_head;
>>   	if (head->data_len > buf_len) {
>>   		dev_err(hdev->dev,
>> -			"buffer overflow (buf_len = %lu, data_len = %u)!\n",
>> +			"buffer overflow (buf_len = %zu, data_len = %u)!\n",
>>   			buf_len, head->data_len);
>>   		return -ENOMEM;
>>   	}
>>
> Thanks!
>
> Best Regards,
> Wei
> .