linux-kernel - Re: [PATCH RESEND] media: cros-ec-cec: do not bail on device_init

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Message-ID: <CALFZZQHuqx+H=7pd9t=XYWqKppMzze0XsXwRVA5kLZfwWYLmKQ@mail.gmail.com>
Date:   Wed, 24 Jun 2020 14:40:25 +0200
From:   Dariusz Marcinkiewicz <darekm@...gle.com>
To:     Hans Verkuil <hverkuil-cisco@...all.nl>
Cc:     linux-media@...r.kernel.org,
        Neil Armstrong <narmstrong@...libre.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Benson Leung <bleung@...omium.org>,
        Enric Balletbo i Serra <enric.balletbo@...labora.com>,
        Guenter Roeck <groeck@...omium.org>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Lee Jones <lee.jones@...aro.org>,
        Sebastian Reichel <sre@...nel.org>,
        Dariusz Marcinkiewicz <darekm@...omium.org>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH RESEND] media: cros-ec-cec: do not bail on
 device_init_wakeup failure

Hello.

I realized that I sent the previous answer using HTML, and as a
consequence it was blocked from mailing lists. Sending it again
(apologies for double posting).

On Mon, Jun 22, 2020 at 12:23 PM Hans Verkuil <hverkuil-cisco@...all.nl> wrote:
>
> On 22/06/2020 12:05, Dariusz Marcinkiewicz wrote:
> > Do not fail probing when device_init_wakeup fails.
> >
> > device_init_wakeup fails when the device is already enabled as wakeup
> > device. Hence, the driver fails to probe the device if:
> > - The device has already been enabled for wakeup (via e.g. sysfs)
> > - The driver has been unloaded and is being loaded again.
> >
> > This goal of the patch is to fix the above cases.
> >
> > Overwhelming majority of the drivers do not check device_init_wakeup
> > return value.
> >
> > Signed-off-by: Dariusz Marcinkiewicz <darekm@...gle.com>
>
> This can be CCed to stable, I guess?
>

That issue is not a recent regression but has been in there since the
very beginning.  So it might be argued that is it not severe enough to
warrant cc'ing stable. Happy to do that anyways if you think
otherwise.

> Can you provide a Fixes: tag as well?
>

Done, submitted v2 with that a couple of days ago.

Thank you and best regards.