net: phy: at803x: move specific at8031 config_intr to dedicated function

Move specific at8031 config_intr bits to dedicated function to make
at803x_config_initr more generic.

This is needed in preparation for PHY driver split as qca8081 share the
same function to setup interrupts.
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/phy/at803x.c

@@ -990,7 +990,6 @@ static int at803x_ack_interrupt(struct phy_device *phydev)
 
 static int at803x_config_intr(struct phy_device *phydev)
 {
-	struct at803x_priv *priv = phydev->priv;
 	int err;
 	int value;
 
@@ -1007,10 +1006,6 @@ static int at803x_config_intr(struct phy_device *phydev)
 		value |= AT803X_INTR_ENABLE_DUPLEX_CHANGED;
 		value |= AT803X_INTR_ENABLE_LINK_FAIL;
 		value |= AT803X_INTR_ENABLE_LINK_SUCCESS;
-		if (priv->is_fiber) {
-			value |= AT803X_INTR_ENABLE_LINK_FAIL_BX;
-			value |= AT803X_INTR_ENABLE_LINK_SUCCESS_BX;
-		}
 
 		err = phy_write(phydev, AT803X_INTR_ENABLE, value);
 	} else {
@@ -1617,6 +1612,29 @@ static int at8031_set_wol(struct phy_device *phydev,
 	return ret;
 }
 
+static int at8031_config_intr(struct phy_device *phydev)
+{
+	struct at803x_priv *priv = phydev->priv;
+	int err, value = 0;
+
+	if (phydev->interrupts == PHY_INTERRUPT_ENABLED &&
+	    priv->is_fiber) {
+		/* Clear any pending interrupts */
+		err = at803x_ack_interrupt(phydev);
+		if (err)
+			return err;
+
+		value |= AT803X_INTR_ENABLE_LINK_FAIL_BX;
+		value |= AT803X_INTR_ENABLE_LINK_SUCCESS_BX;
+
+		err = phy_set_bits(phydev, AT803X_INTR_ENABLE, value);
+		if (err)
+			return err;
+	}
+
+	return at803x_config_intr(phydev);
+}
+
 static int qca83xx_config_init(struct phy_device *phydev)
 {
 	u8 switch_revision;
@@ -2137,7 +2155,7 @@ static struct phy_driver at803x_driver[] = {
 	.write_page		= at803x_write_page,
 	.get_features		= at803x_get_features,
 	.read_status		= at803x_read_status,
-	.config_intr		= at803x_config_intr,
+	.config_intr		= at8031_config_intr,
 	.handle_interrupt	= at803x_handle_interrupt,
 	.get_tunable		= at803x_get_tunable,
 	.set_tunable		= at803x_set_tunable,