linux-kernel - Re: [PATCH] gpio: sim: mark the GPIO chip as a one that can sleep

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Message-ID: <CACRpkdZFr_rqwuv5vxJYWP32g22cXh-n9aFYOO5d1ufNvaFWWw@mail.gmail.com>
Date:   Thu, 3 Aug 2023 00:56:33 +0200
From:   Linus Walleij <linus.walleij@...aro.org>
To:     Bartosz Golaszewski <brgl@...ev.pl>
Cc:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Kent Gibson <warthog618@...il.com>, linux-gpio@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
Subject: Re: [PATCH] gpio: sim: mark the GPIO chip as a one that can sleep

On Tue, Aug 1, 2023 at 9:10 PM Bartosz Golaszewski <brgl@...ev.pl> wrote:

> From: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
>
> Simulated chips use a mutex for synchronization in driver callbacks so
> they must not be called from interrupt context. Set the can_sleep field
> of the GPIO chip to true to force users to only use threaded irqs.
>
> Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>

Obviously correct.
Reviewed-by: Linus Walleij <linus.walleij@...aro.org>

Yours,
Linus Walleij