linux-kernel - Re: [PATCH net-next v2 05/19] net: phy: at803x: remove the use of .ack

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Date:   Wed, 4 Nov 2020 19:09:50 +0100
From:   Oleksij Rempel <o.rempel@...gutronix.de>
To:     Ioana Ciornei <ciorneiioana@...il.com>
Cc:     Andrew Lunn <andrew@...n.ch>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Russell King <linux@...linux.org.uk>,
        Florian Fainelli <f.fainelli@...il.com>,
        Jakub Kicinski <kuba@...nel.org>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Ioana Ciornei <ioana.ciornei@....com>,
        Michael Walle <michael@...le.cc>
Subject: Re: [PATCH net-next v2 05/19] net: phy: at803x: remove the use of
 .ack_interrupt()

On Sun, Nov 01, 2020 at 02:51:00PM +0200, Ioana Ciornei wrote:
> From: Ioana Ciornei <ioana.ciornei@....com>
> 
> In preparation of removing the .ack_interrupt() callback, we must replace
> its occurrences (aka phy_clear_interrupt), from the 2 places where it is
> called from (phy_enable_interrupts and phy_disable_interrupts), with
> equivalent functionality.
> 
> This means that clearing interrupts now becomes something that the PHY
> driver is responsible of doing, before enabling interrupts and after
> clearing them. Make this driver follow the new contract.
> 
> Cc: Oleksij Rempel <o.rempel@...gutronix.de>
> Cc: Michael Walle <michael@...le.cc>
> Signed-off-by: Ioana Ciornei <ioana.ciornei@....com>

Tested-by: Oleksij Rempel <o.rempel@...gutronix.de>

> ---
> Changes in v2:
>  - none
> 
>  drivers/net/phy/at803x.c | 19 ++++++++++++-------
>  1 file changed, 12 insertions(+), 7 deletions(-)
> 
> diff --git a/drivers/net/phy/at803x.c b/drivers/net/phy/at803x.c
> index c7f91934cf82..d0b36fd6c265 100644
> --- a/drivers/net/phy/at803x.c
> +++ b/drivers/net/phy/at803x.c
> @@ -614,6 +614,11 @@ static int at803x_config_intr(struct phy_device *phydev)
>  	value = phy_read(phydev, AT803X_INTR_ENABLE);
>  
>  	if (phydev->interrupts == PHY_INTERRUPT_ENABLED) {
> +		/* Clear any pending interrupts */
> +		err = at803x_ack_interrupt(phydev);
> +		if (err)
> +			return err;
> +
>  		value |= AT803X_INTR_ENABLE_AUTONEG_ERR;
>  		value |= AT803X_INTR_ENABLE_SPEED_CHANGED;
>  		value |= AT803X_INTR_ENABLE_DUPLEX_CHANGED;
> @@ -621,9 +626,14 @@ static int at803x_config_intr(struct phy_device *phydev)
>  		value |= AT803X_INTR_ENABLE_LINK_SUCCESS;
>  
>  		err = phy_write(phydev, AT803X_INTR_ENABLE, value);
> -	}
> -	else
> +	} else {
>  		err = phy_write(phydev, AT803X_INTR_ENABLE, 0);
> +		if (err)
> +			return err;
> +
> +		/* Clear any pending interrupts */
> +		err = at803x_ack_interrupt(phydev);
> +	}
>  
>  	return err;
>  }
> @@ -1088,7 +1098,6 @@ static struct phy_driver at803x_driver[] = {
>  	.resume			= at803x_resume,
>  	/* PHY_GBIT_FEATURES */
>  	.read_status		= at803x_read_status,
> -	.ack_interrupt		= at803x_ack_interrupt,
>  	.config_intr		= at803x_config_intr,
>  	.handle_interrupt	= at803x_handle_interrupt,
>  	.get_tunable		= at803x_get_tunable,
> @@ -1109,7 +1118,6 @@ static struct phy_driver at803x_driver[] = {
>  	.suspend		= at803x_suspend,
>  	.resume			= at803x_resume,
>  	/* PHY_BASIC_FEATURES */
> -	.ack_interrupt		= at803x_ack_interrupt,
>  	.config_intr		= at803x_config_intr,
>  	.handle_interrupt	= at803x_handle_interrupt,
>  }, {
> @@ -1128,7 +1136,6 @@ static struct phy_driver at803x_driver[] = {
>  	/* PHY_GBIT_FEATURES */
>  	.read_status		= at803x_read_status,
>  	.aneg_done		= at803x_aneg_done,
> -	.ack_interrupt		= &at803x_ack_interrupt,
>  	.config_intr		= &at803x_config_intr,
>  	.handle_interrupt	= at803x_handle_interrupt,
>  	.get_tunable		= at803x_get_tunable,
> @@ -1149,7 +1156,6 @@ static struct phy_driver at803x_driver[] = {
>  	.suspend		= at803x_suspend,
>  	.resume			= at803x_resume,
>  	/* PHY_BASIC_FEATURES */
> -	.ack_interrupt		= at803x_ack_interrupt,
>  	.config_intr		= at803x_config_intr,
>  	.handle_interrupt	= at803x_handle_interrupt,
>  	.cable_test_start	= at803x_cable_test_start,
> @@ -1162,7 +1168,6 @@ static struct phy_driver at803x_driver[] = {
>  	.resume			= at803x_resume,
>  	.flags			= PHY_POLL_CABLE_TEST,
>  	/* PHY_BASIC_FEATURES */
> -	.ack_interrupt		= &at803x_ack_interrupt,
>  	.config_intr		= &at803x_config_intr,
>  	.handle_interrupt	= at803x_handle_interrupt,
>  	.cable_test_start	= at803x_cable_test_start,
> -- 
> 2.28.0
> 
> 

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