Re: [PATCH 2/3 net-next] net: mdio: mscc-miim: Use devm_clk_get_optional_enabled()

[Maxime Chevallier <maxime.chevallier@bootlin.com>]

Hi,

On 5/15/26 16:50, Christophe JAILLET wrote:
> Use devm_clk_get_optional_enabled() instead of clk_prepare_enable() and
> clk_disable_unprepare().
> 
> This saves some lines of code and simplifies error handling in the probe.
> 
> Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
> ---
> Compile tested only.
> 
> In the remove sequence, clk_disable_unprepare() and mdiobus_unregister()
> are not called with the same order anymore. I don't think that it matters.

If anything, I'd say this is better as the original ordering, as the 
remove path now mirrors the probe one.

Reviewed-by: Maxime Chevallier <maxime.chevallier@bootlin.com>

Maxime

> ---
>   drivers/net/mdio/mdio-mscc-miim.c | 20 ++++----------------
>   1 file changed, 4 insertions(+), 16 deletions(-)
> 
> diff --git a/drivers/net/mdio/mdio-mscc-miim.c b/drivers/net/mdio/mdio-mscc-miim.c
> index 03878bd9091d..4d8f60d458b8 100644
> --- a/drivers/net/mdio/mdio-mscc-miim.c
> +++ b/drivers/net/mdio/mdio-mscc-miim.c
> @@ -307,7 +307,7 @@ static int mscc_miim_probe(struct platform_device *pdev)
>   	if (!miim->info)
>   		return -EINVAL;
>   
> -	miim->clk = devm_clk_get_optional(dev, NULL);
> +	miim->clk = devm_clk_get_optional_enabled(dev, NULL);
>   	if (IS_ERR(miim->clk))
>   		return PTR_ERR(miim->clk);
>   
> @@ -318,35 +318,23 @@ static int mscc_miim_probe(struct platform_device *pdev)
>   		return -EINVAL;
>   	}
>   
> -	ret = clk_prepare_enable(miim->clk);
> -	if (ret)
> -		return ret;
> -
>   	ret = mscc_miim_clk_set(bus);
>   	if (ret)
> -		goto out_disable_clk;
> +		return ret;
>   
>   	ret = of_mdiobus_register(bus, np);
> -	if (ret < 0) {
> -		dev_err_probe(dev, ret, "Cannot register MDIO bus\n");
> -		goto out_disable_clk;
> -	}
> +	if (ret < 0)
> +		return dev_err_probe(dev, ret, "Cannot register MDIO bus\n");
>   
>   	platform_set_drvdata(pdev, bus);
>   
>   	return 0;
> -
> -out_disable_clk:
> -	clk_disable_unprepare(miim->clk);
> -	return ret;
>   }
>   
>   static void mscc_miim_remove(struct platform_device *pdev)
>   {
>   	struct mii_bus *bus = platform_get_drvdata(pdev);
> -	struct mscc_miim_dev *miim = bus->priv;
>   
> -	clk_disable_unprepare(miim->clk);
>   	mdiobus_unregister(bus);
>   }
>