linux-kernel - Re: [PATCH net-next v4 02/10] net: sparx5: add the basic sparx5 driver

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Message-ID: <cb6ae093f6db85dd62ac9cafc14362ce18987e6c.camel@microchip.com>
Date:   Wed, 16 Jun 2021 08:20:24 +0200
From:   Steen Hegelund <steen.hegelund@...rochip.com>
To:     Philipp Zabel <p.zabel@...gutronix.de>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
CC:     Andrew Lunn <andrew@...n.ch>, Russell King <linux@...linux.org.uk>,
        Microchip Linux Driver Support <UNGLinuxDriver@...rochip.com>,
        "Alexandre Belloni" <alexandre.belloni@...tlin.com>,
        Madalin Bucur <madalin.bucur@....nxp.com>,
        Mark Einon <mark.einon@...il.com>,
        "Masahiro Yamada" <masahiroy@...nel.org>,
        Arnd Bergmann <arnd@...db.de>,
        Simon Horman <simon.horman@...ronome.com>,
        <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        Bjarni Jonasson <bjarni.jonasson@...rochip.com>,
        Lars Povlsen <lars.povlsen@...rochip.com>
Subject: Re: [PATCH net-next v4 02/10] net: sparx5: add the basic sparx5
 driver

Hi Philipp,

Thanks for your comments,

On Tue, 2021-06-15 at 15:22 +0200, Philipp Zabel wrote:
> EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe
> 
> Hi Steen,
> 
> On Tue, 2021-06-15 at 10:50 +0200, Steen Hegelund wrote:
> > This adds the Sparx5 basic SwitchDev driver framework with IO range
> > mapping, switch device detection and core clock configuration.
> > 
> > Support for ports, phylink, netdev, mactable etc. are in the following
> > patches.
> > 
> > Signed-off-by: Steen Hegelund <steen.hegelund@...rochip.com>
> > Signed-off-by: Bjarni Jonasson <bjarni.jonasson@...rochip.com>
> > Signed-off-by: Lars Povlsen <lars.povlsen@...rochip.com>
> [...]
> > diff --git a/drivers/net/ethernet/microchip/sparx5/sparx5_main.c
> > b/drivers/net/ethernet/microchip/sparx5/sparx5_main.c
> > new file mode 100644
> > index 000000000000..892bbbaacbd6
> > --- /dev/null
> > +++ b/drivers/net/ethernet/microchip/sparx5/sparx5_main.c
> > @@ -0,0 +1,743 @@
> [...]
> > +static int mchp_sparx5_probe(struct platform_device *pdev)
> > +{
> [...]
> > +     /* Do switch core reset if available */
> > +     reset = devm_reset_control_get_optional_shared(&pdev->dev, "switch");
> 
> Please don't ignore errors here. For example:
> 
>         if (IS_ERR(reset))
>                 return dev_err_probe(&pdev->dev, PTR_ERR(reset),
>                                      "Failed to get reset.\n");
> 
> >       reset_control_reset(reset);

Yes, I will add an error message.

> 
> regards
> Philipp


-- 
BR
Steen

-=-=-=-=-=-=-=-=-=-=-=-=-=-=
steen.hegelund@...rochip.com