linux-kernel - Re: [PATCH net-next 2/2] net: mdio: add amlogic gxl mdio mux support

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Message-ID: <Y8VWWP53ZysENI7/@corigine.com>
Date:   Mon, 16 Jan 2023 14:51:20 +0100
From:   Simon Horman <simon.horman@...igine.com>
To:     Jerome Brunet <jbrunet@...libre.com>
Cc:     netdev@...r.kernel.org, "David S. Miller" <davem@...emloft.net>,
        linux-amlogic@...ts.infradead.org,
        Kevin Hilman <khilman@...libre.com>,
        Neil Armstrong <neil.armstrong@...aro.org>,
        Da Xue <da@...sconfused.com>, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next 2/2] net: mdio: add amlogic gxl mdio mux support

On Mon, Jan 16, 2023 at 02:27:57PM +0100, Jerome Brunet wrote:
> 
> On Mon 16 Jan 2023 at 13:11, Simon Horman <simon.horman@...igine.com> wrote:
> 
> > On Mon, Jan 16, 2023 at 10:16:36AM +0100, Jerome Brunet wrote:
> >> Add support for the mdio mux and internal phy glue of the GXL SoC
> >> family
> >> 
> >> Signed-off-by: Jerome Brunet <jbrunet@...libre.com>
> >> ---
> >>  drivers/net/mdio/Kconfig              |  11 ++
> >>  drivers/net/mdio/Makefile             |   1 +
> >>  drivers/net/mdio/mdio-mux-meson-gxl.c | 160 ++++++++++++++++++++++++++
> >>  3 files changed, 172 insertions(+)
> >>  create mode 100644 drivers/net/mdio/mdio-mux-meson-gxl.c
> >
> > Hi Jerome,
> >
> > please run this patch through checkpatch.
> 
> Shame ... I really thought I did, but I forgot indeed.
> I am really sorry for this. I'll fix everything.

No problem, it happens.

> > ...
> >
> >> diff --git a/drivers/net/mdio/mdio-mux-meson-gxl.c b/drivers/net/mdio/mdio-mux-meson-gxl.c
> >> new file mode 100644
> >> index 000000000000..205095d845ea
> >> --- /dev/null
> >> +++ b/drivers/net/mdio/mdio-mux-meson-gxl.c
> >
> > ...
> >
> >> +static int gxl_enable_internal_mdio(struct gxl_mdio_mux *priv)
> >> +{
> >
> > nit: I think void would be a more appropriate return type for this
> >      function. Likewise gxl_enable_external_mdio()
> >
> > ...
> >
> >> +static int gxl_mdio_mux_probe(struct platform_device *pdev){
> >
> > nit: '{' should be at the beginning of a new line
> >
> >> +	struct device *dev = &pdev->dev;
> >> +	struct clk *rclk;
> >> +	struct gxl_mdio_mux *priv;
> >
> > nit: reverse xmas tree for local variable declarations.
> >
> >> +	int ret;
> >> +
> >> +	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
> >> +	if (!priv)
> >> +		return -ENOMEM;
> >
> > nit: may be it is nicer to use dev_err_probe() here for consistency.
> 
> That was on purpose. I only use the `dev_err_probe()` when the probe may
> defer, which I don't expect here.
> 
> I don't mind changing if you prefer it this way.

I have no strong opinion on this :)

> >> +	platform_set_drvdata(pdev, priv);
> >> +
> >> +	priv->regs = devm_platform_ioremap_resource(pdev, 0);
> >> +	if (IS_ERR(priv->regs))
> >> +		return PTR_ERR(priv->regs);
> >
> > And here.
> >
> > ...
>