openwrt/target/linux/generic/pending-5.4/746-net-phylink-re-split-__phylink_connect_phy.patch

From 0db7fba746b5608c30d4e2ba1c99a2a309e2d288 Mon Sep 17 00:00:00 2001
From: Russell King <rmk+kernel@armlinux.org.uk>
Date: Fri, 8 Nov 2019 15:22:48 +0000
Subject: [PATCH 649/660] net: phylink: re-split __phylink_connect_phy()

In order to support Clause 45 PHYs on SFP+ modules, which have an
indeterminant phy interface mode, we need to be able to call
phylink_bringup_phy() with a different interface mode to that used when
binding the PHY. Reduce __phylink_connect_phy() to an attach operation,
and move the call to phylink_bringup_phy() to its call sites.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
---
 drivers/net/phy/phylink.c | 39 ++++++++++++++++++++++++---------------
 1 file changed, 24 insertions(+), 15 deletions(-)

--- a/drivers/net/phy/phylink.c
+++ b/drivers/net/phy/phylink.c
@@ -765,11 +765,9 @@ static int phylink_bringup_phy(struct ph
 	return 0;
 }
 
-static int __phylink_connect_phy(struct phylink *pl, struct phy_device *phy,
-		phy_interface_t interface)
+static int phylink_attach_phy(struct phylink *pl, struct phy_device *phy,
+			      phy_interface_t interface)
 {
-	int ret;
-
 	if (WARN_ON(pl->link_an_mode == MLO_AN_FIXED ||
 		    (pl->link_an_mode == MLO_AN_INBAND &&
 		     phy_interface_mode_is_8023z(interface))))
@@ -778,15 +776,7 @@ static int __phylink_connect_phy(struct
 	if (pl->phydev)
 		return -EBUSY;
 
-	ret = phy_attach_direct(pl->netdev, phy, 0, interface);
-	if (ret)
-		return ret;
-
-	ret = phylink_bringup_phy(pl, phy);
-	if (ret)
-		phy_detach(phy);
-
-	return ret;
+	return phy_attach_direct(pl->netdev, phy, 0, interface);
 }
 
 /**
@@ -806,13 +796,23 @@ static int __phylink_connect_phy(struct
  */
 int phylink_connect_phy(struct phylink *pl, struct phy_device *phy)
 {
+	int ret;
+
 	/* Use PHY device/driver interface */
 	if (pl->link_interface == PHY_INTERFACE_MODE_NA) {
 		pl->link_interface = phy->interface;
 		pl->link_config.interface = pl->link_interface;
 	}
 
-	return __phylink_connect_phy(pl, phy, pl->link_interface);
+	ret = phylink_attach_phy(pl, phy, pl->link_interface);
+	if (ret < 0)
+		return ret;
+
+	ret = phylink_bringup_phy(pl, phy);
+	if (ret)
+		phy_detach(phy);
+
+	return ret;
 }
 EXPORT_SYMBOL_GPL(phylink_connect_phy);
 
@@ -1814,8 +1814,17 @@ static void phylink_sfp_link_up(void *up
 static int phylink_sfp_connect_phy(void *upstream, struct phy_device *phy)
 {
 	struct phylink *pl = upstream;
+	int ret;
 
-	return __phylink_connect_phy(upstream, phy, pl->link_config.interface);
+	ret = phylink_attach_phy(pl, phy, pl->link_config.interface);
+	if (ret < 0)
+		return ret;
+
+	ret = phylink_bringup_phy(pl, phy);
+	if (ret)
+		phy_detach(phy);
+
+	return ret;
 }
 
 static void phylink_sfp_disconnect_phy(void *upstream)