netdev - [PATCH net-next v2 10/19] net: phy: aquantia: remove the use of .ack

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Date:   Sun,  1 Nov 2020 14:51:05 +0200
From:   Ioana Ciornei <ciorneiioana@...il.com>
To:     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
Cc:     Ioana Ciornei <ioana.ciornei@....com>
Subject: [PATCH net-next v2 10/19] net: phy: aquantia: remove the use of .ack_interrupt()

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: Heiner Kallweit <hkallweit1@...il.com>
Signed-off-by: Ioana Ciornei <ioana.ciornei@....com>
---
Changes in v2:
 - none

 drivers/net/phy/aquantia_main.c | 36 +++++++++++++++++----------------
 1 file changed, 19 insertions(+), 17 deletions(-)

diff --git a/drivers/net/phy/aquantia_main.c b/drivers/net/phy/aquantia_main.c
index 17b33f0cb179..345f70f9d39b 100644
--- a/drivers/net/phy/aquantia_main.c
+++ b/drivers/net/phy/aquantia_main.c
@@ -247,6 +247,13 @@ static int aqr_config_intr(struct phy_device *phydev)
 	bool en = phydev->interrupts == PHY_INTERRUPT_ENABLED;
 	int err;
 
+	if (en) {
+		/* Clear any pending interrupts before enabling them */
+		err = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_TX_VEND_INT_STATUS2);
+		if (err)
+			return err;
+	}
+
 	err = phy_write_mmd(phydev, MDIO_MMD_AN, MDIO_AN_TX_VEND_INT_MASK2,
 			    en ? MDIO_AN_TX_VEND_INT_MASK2_LINK : 0);
 	if (err < 0)
@@ -257,18 +264,20 @@ static int aqr_config_intr(struct phy_device *phydev)
 	if (err < 0)
 		return err;
 
-	return phy_write_mmd(phydev, MDIO_MMD_VEND1, VEND1_GLOBAL_INT_VEND_MASK,
-			     en ? VEND1_GLOBAL_INT_VEND_MASK_GLOBAL3 |
-			     VEND1_GLOBAL_INT_VEND_MASK_AN : 0);
-}
+	err = phy_write_mmd(phydev, MDIO_MMD_VEND1, VEND1_GLOBAL_INT_VEND_MASK,
+			    en ? VEND1_GLOBAL_INT_VEND_MASK_GLOBAL3 |
+			    VEND1_GLOBAL_INT_VEND_MASK_AN : 0);
+	if (err < 0)
+		return err;
 
-static int aqr_ack_interrupt(struct phy_device *phydev)
-{
-	int reg;
+	if (!en) {
+		/* Clear any pending interrupts after we have disabled them */
+		err = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_TX_VEND_INT_STATUS2);
+		if (err)
+			return err;
+	}
 
-	reg = phy_read_mmd(phydev, MDIO_MMD_AN,
-			   MDIO_AN_TX_VEND_INT_STATUS2);
-	return (reg < 0) ? reg : 0;
+	return 0;
 }
 
 static irqreturn_t aqr_handle_interrupt(struct phy_device *phydev)
@@ -604,7 +613,6 @@ static struct phy_driver aqr_driver[] = {
 	.name		= "Aquantia AQ1202",
 	.config_aneg    = aqr_config_aneg,
 	.config_intr	= aqr_config_intr,
-	.ack_interrupt	= aqr_ack_interrupt,
 	.handle_interrupt = aqr_handle_interrupt,
 	.read_status	= aqr_read_status,
 },
@@ -613,7 +621,6 @@ static struct phy_driver aqr_driver[] = {
 	.name		= "Aquantia AQ2104",
 	.config_aneg    = aqr_config_aneg,
 	.config_intr	= aqr_config_intr,
-	.ack_interrupt	= aqr_ack_interrupt,
 	.handle_interrupt = aqr_handle_interrupt,
 	.read_status	= aqr_read_status,
 },
@@ -622,7 +629,6 @@ static struct phy_driver aqr_driver[] = {
 	.name		= "Aquantia AQR105",
 	.config_aneg    = aqr_config_aneg,
 	.config_intr	= aqr_config_intr,
-	.ack_interrupt	= aqr_ack_interrupt,
 	.handle_interrupt = aqr_handle_interrupt,
 	.read_status	= aqr_read_status,
 	.suspend	= aqr107_suspend,
@@ -633,7 +639,6 @@ static struct phy_driver aqr_driver[] = {
 	.name		= "Aquantia AQR106",
 	.config_aneg    = aqr_config_aneg,
 	.config_intr	= aqr_config_intr,
-	.ack_interrupt	= aqr_ack_interrupt,
 	.handle_interrupt = aqr_handle_interrupt,
 	.read_status	= aqr_read_status,
 },
@@ -644,7 +649,6 @@ static struct phy_driver aqr_driver[] = {
 	.config_init	= aqr107_config_init,
 	.config_aneg    = aqr_config_aneg,
 	.config_intr	= aqr_config_intr,
-	.ack_interrupt	= aqr_ack_interrupt,
 	.handle_interrupt = aqr_handle_interrupt,
 	.read_status	= aqr107_read_status,
 	.get_tunable    = aqr107_get_tunable,
@@ -663,7 +667,6 @@ static struct phy_driver aqr_driver[] = {
 	.config_init	= aqcs109_config_init,
 	.config_aneg    = aqr_config_aneg,
 	.config_intr	= aqr_config_intr,
-	.ack_interrupt	= aqr_ack_interrupt,
 	.handle_interrupt = aqr_handle_interrupt,
 	.read_status	= aqr107_read_status,
 	.get_tunable    = aqr107_get_tunable,
@@ -680,7 +683,6 @@ static struct phy_driver aqr_driver[] = {
 	.name		= "Aquantia AQR405",
 	.config_aneg    = aqr_config_aneg,
 	.config_intr	= aqr_config_intr,
-	.ack_interrupt	= aqr_ack_interrupt,
 	.handle_interrupt = aqr_handle_interrupt,
 	.read_status	= aqr_read_status,
 },
-- 
2.28.0