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Date: Mon, 18 Dec 2023 10:58:30 +0100
From: Andrew Lunn <andrew@lunn.ch>
To: Maxime Chevallier <maxime.chevallier@bootlin.com>
Cc: davem@davemloft.net, netdev@vger.kernel.org,
	linux-kernel@vger.kernel.org, thomas.petazzoni@bootlin.com,
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Subject: Re: [PATCH net-next v4 10/13] net: ethtool: pse-pd: Target the
 command to the requested PHY
Message-ID: <5f3a74fe-11e4-4c6e-a77d-f9c4f6fab156@lunn.ch>
References: <20231215171237.1152563-1-maxime.chevallier@bootlin.com>
 <20231215171237.1152563-11-maxime.chevallier@bootlin.com>
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In-Reply-To: <20231215171237.1152563-11-maxime.chevallier@bootlin.com>

On Fri, Dec 15, 2023 at 06:12:32PM +0100, Maxime Chevallier wrote:
> PSE and PD configuration is a PHY-specific command. Instead of targeting
> the command towards dev->phydev, use the request to pick the targeted
> PHY device.
> 
> Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
> ---
> V4: No changes
> V3: No changes
> V2: New patch
> 
>  net/ethtool/pse-pd.c | 14 +++-----------
>  1 file changed, 3 insertions(+), 11 deletions(-)
> 
> diff --git a/net/ethtool/pse-pd.c b/net/ethtool/pse-pd.c
> index cc478af77111..0d9cd9c87104 100644
> --- a/net/ethtool/pse-pd.c
> +++ b/net/ethtool/pse-pd.c
> @@ -31,17 +31,10 @@ const struct nla_policy ethnl_pse_get_policy[ETHTOOL_A_PSE_HEADER + 1] = {
>  	[ETHTOOL_A_PSE_HEADER] = NLA_POLICY_NESTED(ethnl_header_policy),
>  };
>  
> -static int pse_get_pse_attributes(struct net_device *dev,
> +static int pse_get_pse_attributes(struct phy_device *phydev,
>  				  struct netlink_ext_ack *extack,
>  				  struct pse_reply_data *data)
>  {
> -	struct phy_device *phydev = dev->phydev;
> -
> -	if (!phydev) {
> -		NL_SET_ERR_MSG(extack, "No PHY is attached");
> -		return -EOPNOTSUPP;
> -	}
> -

It would be good to say in the commit message why it is safe to remove
this.

> @@ -132,7 +124,7 @@ ethnl_set_pse(struct ethnl_req_info *req_info, struct genl_info *info)
>  	/* this values are already validated by the ethnl_pse_set_policy */
>  	config.admin_cotrol = nla_get_u32(tb[ETHTOOL_A_PODL_PSE_ADMIN_CONTROL]);
>  
> -	phydev = dev->phydev;
> +	phydev = req_info->phydev;
>  	if (!phydev) {
>  		NL_SET_ERR_MSG(info->extack, "No PHY is attached");
>  		return -EOPNOTSUPP;

So you removed one test, but this one stays?

   Andrew