linux-kernel - Re: [PATCH 2/2] input: imx_sc

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <CAPDyKFruZOP65k0SEEmCGtopp8ywJA92ChGZs2ZR=nVxqUC0OQ@mail.gmail.com>
Date:   Tue, 18 Apr 2023 10:32:09 +0200
From:   Ulf Hansson <ulf.hansson@...aro.org>
To:     Peng Fan <peng.fan@....com>
Cc:     Dmitry Torokhov <dmitry.torokhov@...il.com>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "krzysztof.kozlowski+dt@...aro.org" 
        <krzysztof.kozlowski+dt@...aro.org>,
        "shawnguo@...nel.org" <shawnguo@...nel.org>,
        Aisheng Dong <aisheng.dong@....com>,
        "linux-input@...r.kernel.org" <linux-input@...r.kernel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "s.hauer@...gutronix.de" <s.hauer@...gutronix.de>,
        "kernel@...gutronix.de" <kernel@...gutronix.de>,
        "festevam@...il.com" <festevam@...il.com>,
        dl-linux-imx <linux-imx@....com>
Subject: Re: [PATCH 2/2] input: imx_sc_key: add wakeup support

On Wed, 12 Apr 2023 at 17:58, Peng Fan <peng.fan@....com> wrote:
>
> +Ulf
>
> > Subject: RE: [PATCH 2/2] input: imx_sc_key: add wakeup support
> >
> > > Subject: Re: [PATCH 2/2] input: imx_sc_key: add wakeup support
> > >
> > > On Thu, Mar 23, 2023 at 05:31:41PM +0800, Peng Fan (OSS) wrote:
> > > > From: Peng Fan <peng.fan@....com>
> > > >
> > > > Add support for waking up from system wide suspend.
> > > >
> > > > Signed-off-by: Peng Fan <peng.fan@....com>
> > > > ---
> > > >  drivers/input/keyboard/imx_sc_key.c | 2 ++
> > > >  1 file changed, 2 insertions(+)
> > > >
> > > > diff --git a/drivers/input/keyboard/imx_sc_key.c
> > > b/drivers/input/keyboard/imx_sc_key.c
> > > > index d18839f1f4f6..234f23cf9990 100644
> > > > --- a/drivers/input/keyboard/imx_sc_key.c
> > > > +++ b/drivers/input/keyboard/imx_sc_key.c
> > > > @@ -151,6 +151,8 @@ static int imx_sc_key_probe(struct
> > > platform_device *pdev)
> > > >   priv->input = input;
> > > >   platform_set_drvdata(pdev, priv);
> > > >
> > > > + device_init_wakeup(&pdev->dev,
> > > device_property_read_bool(&pdev->dev, "wakeup-source"));
> > > > +
> > >
> > > I wonder - could we move this to the device core?
> >
> > I see lots device drivers parse wakeup-source, so I also follow That. Not sure
> > whether could move this feature to device core, but anyway I could give a
> > try.
>
> Do you think it is feasible to move device_init_wakeup into device core
> part?

Not sure it would really improve things that much. Subsystems/drivers
need to make additional configurations based upon whether this DT
property is set anyway.

Perhaps an option is to make this a part of the common input subsystem
helper functions instead? Other subsystems do this, but I am not sure
how feasible that would be in the input case.

Kind regards
Uffe