net: phy: microchip: lan87xx: reinit PHY after cable test

BugLink: https://bugs.launchpad.net/bugs/2078289

[ Upstream commit 30f747b ]

Reinit PHY after cable test, otherwise link can't be established on
tested port. This issue is reproducible on LAN9372 switches with
integrated 100BaseT1 PHYs.

Fixes: 7880502 ("net: phy: microchip_t1: add cable test support for lan87xx phy")
Signed-off-by: Oleksij Rempel <[email protected]>
Reviewed-by: Andrew Lunn <[email protected]>
Reviewed-by: Michal Kubiak <[email protected]>
Reviewed-by: Florian Fainelli <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
Signed-off-by: Sasha Levin <[email protected]>
Signed-off-by: Portia Stephens <[email protected]>
Signed-off-by: Stefan Bader <[email protected]>

Author: olerem

drivers/net/phy/microchip_t1.c

@@ -748,7 +748,7 @@ static int lan87xx_cable_test_report(struct phy_device *phydev)
 	ethnl_cable_test_result(phydev, ETHTOOL_A_CABLE_PAIR_A,
 				lan87xx_cable_test_report_trans(detect));
 
-	return 0;
+	return phy_init_hw(phydev);
 }
 
 static int lan87xx_cable_test_get_status(struct phy_device *phydev,