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SubjectRe: \\ 答复: [PATCH] of: del redundant t ype conversion
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On 4/10/19 6:51 PM, xiaojiangfeng wrote:
> My pleasure.
>
> I am very new to sparse.
>
> I guess the warning is caused by the macro min.

I think the warning is likely because the type of data is 'void *'.

Removing the (int) cast is a good fix, but does not resolve
the sparse warning.

-Frank


> Then I submitted my changes.
>
> Thanks for code review.
>
>
> -----邮件原件-----
> 发件人: Frank Rowand [mailto:frowand.list@gmail.com]
> 发送时间: 2019年4月11日 2:50
> 收件人: xiaojiangfeng <xiaojiangfeng@huawei.com>; robh+dt@kernel.org; robh@kernel.org
> 抄送: devicetree@vger.kernel.org; linux-kernel@vger.kernel.org
> 主题: Re: [PATCH] of: del redundant type conversion
>
> On 4/10/19 1:29 AM, xiaojiangfeng wrote:
>> The type of variable l in early_init_dt_scan_chosen is int, there is
>> no need to convert to int.
>>
>> Signed-off-by: xiaojiangfeng <xiaojiangfeng@huawei.com>
>> ---
>> drivers/of/fdt.c | 2 +-
>> 1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c index
>> 4734223..de893c9 100644
>> --- a/drivers/of/fdt.c
>> +++ b/drivers/of/fdt.c
>> @@ -1091,7 +1091,7 @@ int __init early_init_dt_scan_chosen(unsigned long node, const char *uname,
>> /* Retrieve command line */
>> p = of_get_flat_dt_prop(node, "bootargs", &l);
>> if (p != NULL && l > 0)
>> - strlcpy(data, p, min((int)l, COMMAND_LINE_SIZE));
>> + strlcpy(data, p, min(l, COMMAND_LINE_SIZE));
>>
>> /*
>> * CONFIG_CMDLINE is meant to be a default in case nothing else
>>
>
> Thanks for catching the redundant cast.
>
> There is a second problem detected by sparse on that line:
>
> drivers/of/fdt.c:1094:34: warning: expression using sizeof(void)
>
> Can you please fix both issues?
>
> Thanks,
>
> Frank
>

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