netdev - Re: [PATCH v2 1/5] net: phy: smsc: skip ENERGYON interrupt if disabled

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Date:   Tue, 8 Sep 2020 18:58:53 -0700
From:   Florian Fainelli <f.fainelli@...il.com>
To:     Marco Felsch <m.felsch@...gutronix.de>, davem@...emloft.net,
        kuba@...nel.org, robh+dt@...nel.org, andrew@...n.ch,
        hkallweit1@...il.com, linux@...linux.org.uk, zhengdejin5@...il.com,
        richard.leitner@...data.com
Cc:     netdev@...r.kernel.org, kernel@...gutronix.de,
        devicetree@...r.kernel.org
Subject: Re: [PATCH v2 1/5] net: phy: smsc: skip ENERGYON interrupt if
 disabled



On 9/8/2020 4:25 AM, Marco Felsch wrote:
> Don't enable the interrupt if the platform disable the energy detection
> by "smsc,disable-energy-detect".
> 
> Signed-off-by: Marco Felsch <m.felsch@...gutronix.de>
> Reviewed-by: Andrew Lunn <andrew@...n.ch>
> ---
> v2:
> - Add Andrew's tag
> 
>   drivers/net/phy/smsc.c | 15 +++++++++++----
>   1 file changed, 11 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/net/phy/smsc.c b/drivers/net/phy/smsc.c
> index 74568ae16125..fa539a867de6 100644
> --- a/drivers/net/phy/smsc.c
> +++ b/drivers/net/phy/smsc.c
> @@ -37,10 +37,17 @@ struct smsc_phy_priv {
>   
>   static int smsc_phy_config_intr(struct phy_device *phydev)
>   {
> -	int rc = phy_write (phydev, MII_LAN83C185_IM,
> -			((PHY_INTERRUPT_ENABLED == phydev->interrupts)
> -			? MII_LAN83C185_ISF_INT_PHYLIB_EVENTS
> -			: 0));
> +	struct smsc_phy_priv *priv = phydev->priv;
> +	u16 intmask = 0;
> +	int rc;
> +
> +	if (phydev->interrupts) {

Not that it changes the code functionally, but it would be nice to 
preserve the phydev->interrupts == PHY_INTERRUPT_ENABLED.

> +		intmask = MII_LAN83C185_ISF_INT4 | MII_LAN83C185_ISF_INT6;
> +		if (priv->energy_enable)
> +			intmask |= MII_LAN83C185_ISF_INT7;
> +	}

Reviewed-by: Florian Fainelli <f.fainelli@...il.com>
-- 
Florian