linux-kernel - Re: [PATCH] gpiolib: Fix error message on out-of-range GPIO in lookup table

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Date:   Fri, 29 Nov 2019 09:19:45 +0100
From:   Linus Walleij <linus.walleij@...aro.org>
To:     Geert Uytterhoeven <geert+renesas@...der.be>
Cc:     Bartosz Golaszewski <bgolaszewski@...libre.com>,
        Alexandre Courbot <acourbot@...dia.com>,
        "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] gpiolib: Fix error message on out-of-range GPIO in lookup table

On Wed, Nov 27, 2019 at 10:59 AM Geert Uytterhoeven
<geert+renesas@...der.be> wrote:

> When a GPIO offset in a lookup table is out-of-range, the printed error
> message (1) does not include the actual out-of-range value, and (2)
> contains an off-by-one error in the upper bound.
>
> Avoid user confusion by also printing the actual GPIO offset, and
> correcting the upper bound of the range.
> While at it, use "%u" for unsigned int.
>
> Sample impact:
>
>     -requested GPIO 0 is out of range [0..32] for chip e6052000.gpio
>     +requested GPIO 0 (45) is out of range [0..31] for chip e6052000.gpio
>
> Fixes: 2a3cf6a3599e9015 ("gpiolib: return -ENOENT if no GPIO mapping exists")
> Signed-off-by: Geert Uytterhoeven <geert+renesas@...der.be>

Patch applied for fixes!

Thanks!
Linus Walleij