linux-kernel - Re: [PATCH v2] pinctrl: amd: disable and mask interrupts on probe

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Date:   Sat, 16 Oct 2021 23:57:41 +0200
From:   Linus Walleij <linus.walleij@...aro.org>
To:     Sachi King <nakato@...ato.io>
Cc:     bnatikar@....com, Mario Limonciello <mario.limonciello@....com>,
        "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        "S-k, Shyam-sundar" <Shyam-sundar.S-k@....com>,
        "Shah, Nehal-bakulchandra" <Nehal-bakulchandra.Shah@....com>,
        linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2] pinctrl: amd: disable and mask interrupts on probe

On Sat, Oct 9, 2021 at 5:33 AM Sachi King <nakato@...ato.io> wrote:

> Some systems such as the Microsoft Surface Laptop 4 leave interrupts
> enabled and configured for use in sleep states on boot, which cause
> unexpected behaviour such as spurious wakes and failed resumes in
> s2idle states.
>
> As interrupts should not be enabled until they are claimed and
> explicitly enabled, disabling any interrupts mistakenly left enabled by
> firmware should be safe.
>
> Signed-off-by: Sachi King <nakato@...ato.io>

This v2 version applied for fixes.

Yours,
Linus Walleij