linux-kernel - Re: [PATCH v7 1/2] hwmon: (asus_wmi_ec

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Date:   Fri, 15 Oct 2021 20:40:52 +0300
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Eugene Shalygin <eugene.shalygin@...il.com>
Cc:     Denis Pauk <pauk.denis@...il.com>,
        Platform Driver <platform-driver-x86@...r.kernel.org>,
        thomas@...ssschuh.net, Tor Vic <torvic9@...lbox.org>,
        Oleksandr Natalenko <oleksandr@...alenko.name>,
        kernel test robot <lkp@...el.com>,
        Jean Delvare <jdelvare@...e.com>,
        Guenter Roeck <linux@...ck-us.net>,
        Jonathan Corbet <corbet@....net>, linux-hwmon@...r.kernel.org,
        Linux Documentation List <linux-doc@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v7 1/2] hwmon: (asus_wmi_ec_sensors) Support B550 Asus WMI.

On Fri, Oct 15, 2021 at 8:36 PM Andy Shevchenko
<andy.shevchenko@...il.com> wrote:
> On Fri, Oct 15, 2021 at 5:26 PM Eugene Shalygin
> <eugene.shalygin@...il.com> wrote:

...

> > bin2hex() can't output UTF-16LE characters, can it? It would need an
> > intermediate buffer and a call to convert ASCII (UTF-8) to UTF-16.
>
> I didn't get it. If there is a strong endianess expected the parameter
> should be __le16 or __be16, moreover it seems it missed the const
> qualifier. Any preparatory stuff should be done in the
> asus_wmi_ec_make_block_read_query() which prepares the input buffer,
> doesn't it?

I'm expecting a confusion here, so let me clarify:
1) in the current code the __le16/__be16 is missed, BUT
2) if you are going to prepare CPU endian buffer in the caller, the
u16 is correct, only const should be added.

-- 
With Best Regards,
Andy Shevchenko