net: phy: realtek: remove the use of .ack_interrupt()

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: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Cc: Willy Liu <willy.liu@realtek.com>
Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/phy/realtek.c

@@ -108,24 +108,45 @@ static int rtl8211f_ack_interrupt(struct phy_device *phydev)
 static int rtl8201_config_intr(struct phy_device *phydev)
 {
 	u16 val;
+	int err;
+
+	if (phydev->interrupts == PHY_INTERRUPT_ENABLED) {
+		err = rtl8201_ack_interrupt(phydev);
+		if (err)
+			return err;
 
-	if (phydev->interrupts == PHY_INTERRUPT_ENABLED)
 		val = BIT(13) | BIT(12) | BIT(11);
-	else
+		err = phy_write_paged(phydev, 0x7, RTL8201F_IER, val);
+	} else {
 		val = 0;
+		err = phy_write_paged(phydev, 0x7, RTL8201F_IER, val);
+		if (err)
+			return err;
+
+		err = rtl8201_ack_interrupt(phydev);
+	}
 
-	return phy_write_paged(phydev, 0x7, RTL8201F_IER, val);
+	return err;
 }
 
 static int rtl8211b_config_intr(struct phy_device *phydev)
 {
 	int err;
 
-	if (phydev->interrupts == PHY_INTERRUPT_ENABLED)
+	if (phydev->interrupts == PHY_INTERRUPT_ENABLED) {
+		err = rtl821x_ack_interrupt(phydev);
+		if (err)
+			return err;
+
 		err = phy_write(phydev, RTL821x_INER,
 				RTL8211B_INER_INIT);
-	else
+	} else {
 		err = phy_write(phydev, RTL821x_INER, 0);
+		if (err)
+			return err;
+
+		err = rtl821x_ack_interrupt(phydev);
+	}
 
 	return err;
 }
@@ -134,25 +155,46 @@ static int rtl8211e_config_intr(struct phy_device *phydev)
 {
 	int err;
 
-	if (phydev->interrupts == PHY_INTERRUPT_ENABLED)
+	if (phydev->interrupts == PHY_INTERRUPT_ENABLED) {
+		err = rtl821x_ack_interrupt(phydev);
+		if (err)
+			return err;
+
 		err = phy_write(phydev, RTL821x_INER,
 				RTL8211E_INER_LINK_STATUS);
-	else
+	} else {
 		err = phy_write(phydev, RTL821x_INER, 0);
+		if (err)
+			return err;
+
+		err = rtl821x_ack_interrupt(phydev);
+	}
 
 	return err;
 }
 
 static int rtl8211f_config_intr(struct phy_device *phydev)
 {
 	u16 val;
+	int err;
+
+	if (phydev->interrupts == PHY_INTERRUPT_ENABLED) {
+		err = rtl8211f_ack_interrupt(phydev);
+		if (err)
+			return err;
 
-	if (phydev->interrupts == PHY_INTERRUPT_ENABLED)
 		val = RTL8211F_INER_LINK_STATUS;
-	else
+		err = phy_write_paged(phydev, 0xa42, RTL821x_INER, val);
+	} else {
 		val = 0;
+		err = phy_write_paged(phydev, 0xa42, RTL821x_INER, val);
+		if (err)
+			return err;
 
-	return phy_write_paged(phydev, 0xa42, RTL821x_INER, val);
+		err = rtl8211f_ack_interrupt(phydev);
+	}
+
+	return err;
 }
 
 static irqreturn_t rtl8201_handle_interrupt(struct phy_device *phydev)
@@ -620,7 +662,6 @@ static struct phy_driver realtek_drvs[] = {
 	}, {
 		PHY_ID_MATCH_EXACT(0x001cc816),
 		.name		= "RTL8201F Fast Ethernet",
-		.ack_interrupt	= &rtl8201_ack_interrupt,
 		.config_intr	= &rtl8201_config_intr,
 		.handle_interrupt = rtl8201_handle_interrupt,
 		.suspend	= genphy_suspend,
@@ -647,7 +688,6 @@ static struct phy_driver realtek_drvs[] = {
 	}, {
 		PHY_ID_MATCH_EXACT(0x001cc912),
 		.name		= "RTL8211B Gigabit Ethernet",
-		.ack_interrupt	= &rtl821x_ack_interrupt,
 		.config_intr	= &rtl8211b_config_intr,
 		.handle_interrupt = rtl821x_handle_interrupt,
 		.read_mmd	= &genphy_read_mmd_unsupported,
@@ -667,7 +707,6 @@ static struct phy_driver realtek_drvs[] = {
 	}, {
 		PHY_ID_MATCH_EXACT(0x001cc914),
 		.name		= "RTL8211DN Gigabit Ethernet",
-		.ack_interrupt	= rtl821x_ack_interrupt,
 		.config_intr	= rtl8211e_config_intr,
 		.handle_interrupt = rtl821x_handle_interrupt,
 		.suspend	= genphy_suspend,
@@ -678,7 +717,6 @@ static struct phy_driver realtek_drvs[] = {
 		PHY_ID_MATCH_EXACT(0x001cc915),
 		.name		= "RTL8211E Gigabit Ethernet",
 		.config_init	= &rtl8211e_config_init,
-		.ack_interrupt	= &rtl821x_ack_interrupt,
 		.config_intr	= &rtl8211e_config_intr,
 		.handle_interrupt = rtl821x_handle_interrupt,
 		.suspend	= genphy_suspend,
@@ -689,7 +727,6 @@ static struct phy_driver realtek_drvs[] = {
 		PHY_ID_MATCH_EXACT(0x001cc916),
 		.name		= "RTL8211F Gigabit Ethernet",
 		.config_init	= &rtl8211f_config_init,
-		.ack_interrupt	= &rtl8211f_ack_interrupt,
 		.config_intr	= &rtl8211f_config_intr,
 		.handle_interrupt = rtl8211f_handle_interrupt,
 		.suspend	= genphy_suspend,
@@ -779,7 +816,6 @@ static struct phy_driver realtek_drvs[] = {
 		 * irq is requested and ACKed by reading the status register,
 		 * which is done by the irqchip code.
 		 */
-		.ack_interrupt	= genphy_no_ack_interrupt,
 		.config_intr	= genphy_no_config_intr,
 		.handle_interrupt = genphy_handle_interrupt_no_ack,
 		.suspend	= genphy_suspend,