linux-kernel - Re: [PATCH] gpio: pxa: handle corner case of unprobed device

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Message-ID: <CACRpkdbU=87WNn1jksJitVouOQuXJsukUqCXggnD6kUjyr7Zwg@mail.gmail.com>
Date:   Wed, 29 Aug 2018 13:57:08 +0200
From:   Linus Walleij <linus.walleij@...aro.org>
To:     Robert Jarzmik <robert.jarzmik@...e.fr>
Cc:     "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] gpio: pxa: handle corner case of unprobed device

On Sat, Aug 25, 2018 at 10:44 AM Robert Jarzmik <robert.jarzmik@...e.fr> wrote:

> In the corner case where the gpio driver probe fails, for whatever
> reason, the suspend and resume handlers will still be called as they
> have to be registered as syscore operations. This applies as well when
> no probe was called while the driver has been built in the kernel.
>
> Nicolas tracked this in :
> https://bugzilla.kernel.org/show_bug.cgi?id=200905
>
> Therefore, add a failsafe in these function, and test if a proper probe
> succeeded and the driver is functional.
>
> Signed-off-by: Robert Jarzmik <robert.jarzmik@...e.fr>
> Reported-by: Nicolas Chauvet <kwizart@...il.com>

Patch applied.

Yours,
Linus Walleij