linux-kernel - Re: [PATCH] pinctrl: rockchip: Enhance support for IRQ_TYPE_EDGE

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Message-ID: <CACRpkda6VoNjJfKY3+oCvdB+V6O_4cumKpjVSdBb9e8mEmHF6g@mail.gmail.com>
Date:   Mon, 22 Aug 2022 11:03:08 +0200
From:   Linus Walleij <linus.walleij@...aro.org>
To:     João H. Spies <jhlspies@...il.com>
Cc:     Bartosz Golaszewski <brgl@...ev.pl>,
        Heiko Stuebner <heiko@...ech.de>,
        Jianqun Xu <jay.xu@...k-chips.com>,
        Maya Matuszczyk <maccraft123mc@...il.com>,
        linux-gpio@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] pinctrl: rockchip: Enhance support for IRQ_TYPE_EDGE_BOTH

On Mon, Aug 8, 2022 at 4:53 AM João H. Spies <jhlspies@...il.com> wrote:

> Switching between falling/rising edges for IRQ_TYPE_EDGE_BOTH on pins that
> require debounce can cause the device to lose events due to a desync
> between pin state and irq type.
>
> This problem is resolved by switching between IRQ_TYPE_LEVEL_LOW and
> IRQ_TYPE_LEVEL_HIGH instead.
>
> Fixes: 936ee26 ("gpio/rockchip: add driver for rockchip gpio")
> Signed-off-by: João H. Spies <jhlspies@...il.com>

No reaction from maintainers so I'm just gonna assume this fix is
correct and applied for fixes.

Yours,
Linus Walleij