linux-kernel - Re: [PATCH] net: Use of_property_read

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Date:   Tue, 14 Mar 2023 14:14:37 -0500
From:   Rob Herring <robh@...nel.org>
To:     Simon Horman <simon.horman@...igine.com>
Cc:     Wolfgang Grandegger <wg@...ndegger.com>,
        Marc Kleine-Budde <mkl@...gutronix.de>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Nicolas Ferre <nicolas.ferre@...rochip.com>,
        Claudiu Beznea <claudiu.beznea@...rochip.com>,
        Wei Fang <wei.fang@....com>,
        Shenwei Wang <shenwei.wang@....com>,
        Clark Wang <xiaoning.wang@....com>,
        NXP Linux Team <linux-imx@....com>,
        Claudiu Manoil <claudiu.manoil@....com>,
        Giuseppe Cavallaro <peppe.cavallaro@...com>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        Jose Abreu <joabreu@...opsys.com>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Grygorii Strashko <grygorii.strashko@...com>,
        Francois Romieu <romieu@...zoreil.com>,
        Michal Simek <michal.simek@...inx.com>,
        Zhao Qiang <qiang.zhao@....com>, Kalle Valo <kvalo@...nel.org>,
        Samuel Mendoza-Jonas <sam@...dozajonas.com>,
        devicetree@...r.kernel.org, linux-can@...r.kernel.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-stm32@...md-mailman.stormreply.com,
        linux-arm-kernel@...ts.infradead.org, linux-omap@...r.kernel.org,
        linuxppc-dev@...ts.ozlabs.org, linux-wireless@...r.kernel.org
Subject: Re: [PATCH] net: Use of_property_read_bool() for boolean properties

On Sat, Mar 11, 2023 at 5:50 AM Simon Horman <simon.horman@...igine.com> wrote:
>
> On Fri, Mar 10, 2023 at 08:47:16AM -0600, Rob Herring wrote:
> > It is preferred to use typed property access functions (i.e.
> > of_property_read_<type> functions) rather than low-level
> > of_get_property/of_find_property functions for reading properties.
> > Convert reading boolean properties to to of_property_read_bool().
> >
> > Signed-off-by: Rob Herring <robh@...nel.org>
>
> Reviewed-by: Simon Horman <simon.horman@...igine.com>
>
> ...
>
> > diff --git a/drivers/net/ethernet/via/via-velocity.c b/drivers/net/ethernet/via/via-velocity.c
> > index a502812ac418..86f7843b4591 100644
> > --- a/drivers/net/ethernet/via/via-velocity.c
> > +++ b/drivers/net/ethernet/via/via-velocity.c
> > @@ -2709,8 +2709,7 @@ static int velocity_get_platform_info(struct velocity_info *vptr)
> >       struct resource res;
> >       int ret;
> >
> > -     if (of_get_property(vptr->dev->of_node, "no-eeprom", NULL))
> > -             vptr->no_eeprom = 1;
> > +     vptr->no_eeprom = of_property_read_bool(vptr->dev->of_node, "no-eeprom");
>
> As per my comment on "[PATCH] nfc: mrvl: Use of_property_read_bool() for
> boolean properties".
>
> I'm not that enthusiastic about assigning a bool value to a field
> with an integer type. But that is likely a topic for another patch.
>
> >       ret = of_address_to_resource(vptr->dev->of_node, 0, &res);
> >       if (ret) {
>
> ...
>
> > diff --git a/drivers/net/wan/fsl_ucc_hdlc.c b/drivers/net/wan/fsl_ucc_hdlc.c
> > index 1c53b5546927..47c2ad7a3e42 100644
> > --- a/drivers/net/wan/fsl_ucc_hdlc.c
> > +++ b/drivers/net/wan/fsl_ucc_hdlc.c
> > @@ -1177,14 +1177,9 @@ static int ucc_hdlc_probe(struct platform_device *pdev)
> >       uhdlc_priv->dev = &pdev->dev;
> >       uhdlc_priv->ut_info = ut_info;
> >
> > -     if (of_get_property(np, "fsl,tdm-interface", NULL))
> > -             uhdlc_priv->tsa = 1;
> > -
> > -     if (of_get_property(np, "fsl,ucc-internal-loopback", NULL))
> > -             uhdlc_priv->loopback = 1;
> > -
> > -     if (of_get_property(np, "fsl,hdlc-bus", NULL))
> > -             uhdlc_priv->hdlc_bus = 1;
> > +     uhdlc_priv->tsa = of_property_read_bool(np, "fsl,tdm-interface");
>
> Here too.

These are already bool. Turns out the only one that needs changing is
no_eeprom. netdev folks marked this as changes requested, so I'll add
that in v2.

Rob