linux-kernel - Re: [PATCH] pinctrl: at91: don't use the same irqchip with multiple gpiochips

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Date:   Fri, 14 Sep 2018 10:59:47 +0200
From:   Linus Walleij <linus.walleij@...aro.org>
To:     Ludovic Desroches <ludovic.desroches@...rochip.com>
Cc:     Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Jean-Christophe PLAGNIOL-VILLARD <plagnioj@...osoft.com>,
        Nicolas Ferre <nicolas.ferre@...rochip.com>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Hans Verkuil <hverkuil@...all.nl>
Subject: Re: [PATCH] pinctrl: at91: don't use the same irqchip with multiple gpiochips

On Thu, Sep 13, 2018 at 2:46 PM Ludovic Desroches
<ludovic.desroches@...rochip.com> wrote:

> Sharing the same irqchip with multiple gpiochips is not a good
> practice. For instance, when installing hooks, we change the state
> of the irqchip. The initial state of the irqchip for the second
> gpiochip to register is then disrupted.
>
> Signed-off-by: Ludovic Desroches <ludovic.desroches@...rochip.com>

Patch applied.

Yours,
Linus Walleij