linux-kernel - Re: [PATCH 3/4] auxdisplay: charlcd: fix x/y address commands

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Message-ID: <1a02d35e-b87c-3751-eb1a-f3becee4aa6b@robertabel.eu>
Date:   Tue, 27 Feb 2018 00:05:10 +0100
From:   Robert Abel <rabel@...ertabel.eu>
To:     Miguel Ojeda <miguel.ojeda.sandonis@...il.com>
Cc:     linux-kernel <linux-kernel@...r.kernel.org>,
        Willy Tarreau <w@....eu>,
        Geert Uytterhoeven <geert@...ux-m68k.org>,
        Andy Shevchenko <andy.shevchenko@...il.com>
Subject: Re: [PATCH 3/4] auxdisplay: charlcd: fix x/y address commands

Hi Miguel,

On 26 Feb 2018 17:49, Miguel Ojeda wrote:
> On Mon, Feb 26, 2018 at 12:54 AM, Robert Abel <rabel@...ertabel.eu> wrote:
>> +               /* clamp new x/y coordinates */
>> +               if (tmp_addr.x >= lcd->width)
>> +                       tmp_addr.x = lcd->width - 1;
> 
> tmp_addr.x = min(tmp_addr.x, lcd->width - 1);

Had throught of that, too. However, it introduces a warning about type
mismatch, because lcd->width is int while tmp_addr.x is unsigned long
int. I didn't fell like saving a line warranted much bigger changes to
the lcd struct.

Regards,

Robert