linux-kernel - Re: [PATCH v2] net: dsa: Fix conditional handling of Wake-on-Lan configuration in dsa_user_set

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Message-ID: <ZwOiYZKGdkH-7qOK@shell.armlinux.org.uk>
Date: Mon, 7 Oct 2024 09:57:05 +0100
From: "Russell King (Oracle)" <linux@...linux.org.uk>
To: Mohammed Anees <pvmohammedanees2003@...il.com>
Cc: netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	Andrew Lunn <andrew@...n.ch>,
	Florian Fainelli <f.fainelli@...il.com>,
	Vladimir Oltean <olteanv@...il.com>,
	"David S . Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>
Subject: Re: [PATCH v2] net: dsa: Fix conditional handling of Wake-on-Lan
 configuration in dsa_user_set_wol

On Mon, Oct 07, 2024 at 04:49:38AM +0530, Mohammed Anees wrote:
> In the original implementation of dsa_user_set_wol(), the return
> value of phylink_ethtool_set_wol() was not checked, which could
> lead to errors being ignored. This wouldn't matter if it returned
> -EOPNOTSUPP, since that indicates the PHY layer doesn't support
> the option, but if any other value is returned, it is problematic
> and must be checked. The solution is to check the return value of
> phylink_ethtool_set_wol(), and if it returns anything other than
> -EOPNOTSUPP, immediately return the error. Only if it returns
> -EOPNOTSUPP should the function proceed to check whether WoL can
> be set by ds->ops->set_wol().
> 
> Fixes: 57719771a244 ("Merge tag 'sound-6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound")
> Signed-off-by: Mohammed Anees <pvmohammedanees2003@...il.com>
> ---
> v2:
> - Added error checking for phylink_ethtool_set_wol(), ensuring correct
> handling compared to v1.

I don't think this adds "correct handing". See my reply to the first
version.

pw-bot: cr

-- 
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