Re: [PATCH 2/3] net: ethernet: actions: Add Actions Semi Owl Ethernet MAC driver

[Philipp Zabel <pza@pengutronix.de>]

Hi Cristian,

On Thu, Mar 11, 2021 at 03:20:13AM +0200, Cristian Ciocaltea wrote:
> Add new driver for the Ethernet MAC used on the Actions Semi Owl
> family of SoCs.
> 
> Currently this has been tested only on the Actions Semi S500 SoC
> variant.
> 
> Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@gmail.com>
> ---
[...]
> diff --git a/drivers/net/ethernet/actions/owl-emac.c b/drivers/net/ethernet/actions/owl-emac.c
> new file mode 100644
> index 000000000000..ebd8ea88bca4
> --- /dev/null
> +++ b/drivers/net/ethernet/actions/owl-emac.c
> @@ -0,0 +1,1660 @@
[...]
> +static int owl_emac_probe(struct platform_device *pdev)
> +{
[...]
> +	priv->reset = devm_reset_control_get(dev, NULL);

Please use

	priv->reset = devm_reset_control_get_exclusive(dev, NULL);

instead, to explicitly state that the driver requires exclusive
control over the reset line.

> +	if (IS_ERR(priv->reset)) {
> +		ret = PTR_ERR(priv->reset);
> +		dev_err(dev, "failed to get reset control: %d\n", ret);
> +		return ret;

You could use:

		return dev_err_probe(dev, PTR_ERR(priv->reset),
				     "failed to get reset control");

regards
Philipp