linux-kernel - Re: [PATCH] Input: ili210x - fix return value of is

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Message-ID: <CAGngYiUCC10epFwLO7wXMT-ko2g-zXRDecMwaK5=Y4nCCHHVEw@mail.gmail.com>
Date:   Mon, 10 Feb 2020 10:07:34 -0500
From:   Sven Van Asbroeck <thesven73@...il.com>
To:     Luca Weiss <luca@...tu.xyz>
Cc:     linux-input@...r.kernel.org, ~postmarketos/upstreaming@...ts.sr.ht,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Marek Vasut <marex@...x.de>,
        Thomas Gleixner <tglx@...utronix.de>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] Input: ili210x - fix return value of is_visible function

Luca,

Good catch. That's what happens when I post a patch I can't test :)

Reviewed-by: Sven Van Asbroeck <TheSven73@...il.com>

On Sun, Feb 9, 2020 at 9:58 AM Luca Weiss <luca@...tu.xyz> wrote:
>
> The is_visible function expects the permissions associated with an
> attribute of the sysfs group or 0 if an attribute is not visible.
>
> Change the code to return the attribute permissions when the attribute
> should be visible which resolves the warning:
>
>   Attribute calibrate: Invalid permissions 01
>
> Fixes: cc12ba1872c6 ("Input: ili210x - optionally show calibrate sysfs attribute")
> Signed-off-by: Luca Weiss <luca@...tu.xyz>
> ---
>  drivers/input/touchscreen/ili210x.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/input/touchscreen/ili210x.c b/drivers/input/touchscreen/ili210x.c
> index 37526baff8a6..199cf3daec10 100644
> --- a/drivers/input/touchscreen/ili210x.c
> +++ b/drivers/input/touchscreen/ili210x.c
> @@ -351,7 +351,7 @@ static umode_t ili210x_calibrate_visible(struct kobject *kobj,
>         struct i2c_client *client = to_i2c_client(dev);
>         struct ili210x *priv = i2c_get_clientdata(client);
>
> -       return priv->chip->has_calibrate_reg;
> +       return priv->chip->has_calibrate_reg ? attr->mode : 0;
>  }
>
>  static const struct attribute_group ili210x_attr_group = {
> --
> 2.25.0
>