From: Russell King <rmk+kernel@armlinux.org.uk>
Date: Wed, 11 Dec 2019 10:56:14 +0000
Subject: net: sfp: move phy_start()/phy_stop() to phylink
Patch-mainline: v5.6-rc1
Git-commit: 4882057ad434e8a6434fce20dc7b7315d40a9d4a
References: bsc#1176447

Move phy_start() and phy_stop() into the module_start and module_stop
notifications in phylink, rather than having them in the SFP code.
This gives phylink responsibility for controlling the PHY, rather
than having SFP start and stop the PHY state machine.

Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/net/phy/phylink.c |   22 ++++++++++++++++++++++
 drivers/net/phy/sfp.c     |    2 --
 2 files changed, 22 insertions(+), 2 deletions(-)

--- a/drivers/net/phy/phylink.c
+++ b/drivers/net/phy/phylink.c
@@ -1772,6 +1772,26 @@ static int phylink_sfp_module_insert(voi
 	return ret;
 }
 
+static int phylink_sfp_module_start(void *upstream)
+{
+	struct phylink *pl = upstream;
+
+	/* If this SFP module has a PHY, start the PHY now. */
+	if (pl->phydev)
+		phy_start(pl->phydev);
+
+	return 0;
+}
+
+static void phylink_sfp_module_stop(void *upstream)
+{
+	struct phylink *pl = upstream;
+
+	/* If this SFP module has a PHY, stop it. */
+	if (pl->phydev)
+		phy_stop(pl->phydev);
+}
+
 static void phylink_sfp_link_down(void *upstream)
 {
 	struct phylink *pl = upstream;
@@ -1807,6 +1827,8 @@ static const struct sfp_upstream_ops sfp
 	.attach = phylink_sfp_attach,
 	.detach = phylink_sfp_detach,
 	.module_insert = phylink_sfp_module_insert,
+	.module_start = phylink_sfp_module_start,
+	.module_stop = phylink_sfp_module_stop,
 	.link_up = phylink_sfp_link_up,
 	.link_down = phylink_sfp_link_down,
 	.connect_phy = phylink_sfp_connect_phy,
--- a/drivers/net/phy/sfp.c
+++ b/drivers/net/phy/sfp.c
@@ -1396,7 +1396,6 @@ static void sfp_sm_mod_next(struct sfp *
 
 static void sfp_sm_phy_detach(struct sfp *sfp)
 {
-	phy_stop(sfp->mod_phy);
 	sfp_remove_phy(sfp->sfp_bus);
 	phy_device_remove(sfp->mod_phy);
 	phy_device_free(sfp->mod_phy);
@@ -1427,7 +1426,6 @@ static void sfp_sm_probe_phy(struct sfp
 	}
 
 	sfp->mod_phy = phy;
-	phy_start(phy);
 }
 
 static void sfp_sm_link_up(struct sfp *sfp)