Thanks for your suggestions. I just thought both of them are better than the deprecated strcpy().
Should I resubmit the patch after making changes or just leave it as it originally is?

Matthew Wilcox <willy@infradead.org> 于2021年1月24日周日 下午12:08写道：
On Sun, Jan 24, 2021 at 10:23:37AM +0800, Stephen Zhang wrote:
> -     strcpy(name, MFD_NAME_PREFIX);
> +     strscpy(name, MFD_NAME_PREFIX, len + MFD_NAME_PREFIX_LEN);

This is silly.  Use memcpy() if you must remove strcpy.