linux-kernel - Re: [PATCH] gpio: mpc8xxx: Add platform device to gpiochip->parent

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Message-ID: <CACRpkdax5H0ar3ujKDohXvDZAXPWNWFKE1_AX9tn1FEOv5Yteg@mail.gmail.com>
Date:   Thu, 28 Nov 2019 14:39:10 +0100
From:   Linus Walleij <linus.walleij@...aro.org>
To:     Johnson CH Chen (陳昭勳) 
        <JohnsonCH.Chen@...a.com>
Cc:     "linux-gpio@...r.kernel.org" <linux-gpio@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "zero19850401@...il.com" <zero19850401@...il.com>
Subject: Re: [PATCH] gpio: mpc8xxx: Add platform device to gpiochip->parent

Hi Johnson,

On Tue, Nov 26, 2019 at 7:51 AM Johnson CH Chen (陳昭勳)
<JohnsonCH.Chen@...a.com> wrote:

> In old kernels, some APIs still try to use parent->of_node from struct gpio_chip,
> and it could be resulted in kernel panic because parent is NULL. Adding platform
> device to gpiochip->parent can fix this problem.
>
> Signed-off-by: Johnson Chen <johnsonch.chen@...a.com>
> Link: https://patchwork.kernel.org/patch/11234609

Patch applied for fixes!

Yours,
Linus Walleij