linux-kernel - Re: [PATCH] net: dsa: Fix conditional handling of Wake-on-Lan configuration in dsa_user_set

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Message-ID: <32b408a4-8b2d-4425-9757-0f8cbfddf21c@lunn.ch>
Date: Sun, 6 Oct 2024 21:57:26 +0200
From: Andrew Lunn <andrew@...n.ch>
To: Mohammed Anees <pvmohammedanees2003@...il.com>
Cc: davem@...emloft.net, edumazet@...gle.com, f.fainelli@...il.com,
	kuba@...nel.org, linux-kernel@...r.kernel.org,
	linux@...linux.org.uk, netdev@...r.kernel.org, olteanv@...il.com,
	pabeni@...hat.com
Subject: Re: [PATCH] net: dsa: Fix conditional handling of Wake-on-Lan
 configuration in dsa_user_set_wol

On Sun, Oct 06, 2024 at 09:40:32PM +0530, Mohammed Anees wrote:
> Considering the insight you've provided, I've written the code below
> 
> static int dsa_user_set_wol(struct net_device *dev, struct ethtool_wolinfo *w)
> {
> 	struct dsa_port *dp = dsa_user_to_port(dev);
> 	struct dsa_switch *ds = dp->ds;
> 	int ret;
> 
> 	ret = phylink_ethtool_set_wol(dp->pl, w);
> 
> 	if (ret != -EOPNOTSUPP)
> 		return ret;
> 
> 	if (ds->ops->set_wol)
> 		ret = ds->ops->set_wol(ds, dp->index, w);
> 		if (ret != -EOPNOTSUPP)
> 			return ret;

This can be simplified to just:

> 	if (ds->ops->set_wol)
> 		return ds->ops->set_wol(ds, dp->index, w);
> 
> 	return -EOPNOTSUPP;
> }

	Andrew