openwrt/target/linux/generic/backport-4.19/704-v4.20-net-phy-Stop-with-excessive-soft-reset.patch

From 1541649a9dd79e9b941d399de564475e426a2d0b Mon Sep 17 00:00:00 2001
From: Florian Fainelli <f.fainelli@gmail.com>
Date: Tue, 25 Sep 2018 11:28:45 -0700
Subject: [PATCH 602/660] net: phy: Stop with excessive soft reset

While consolidating the PHY reset in phy_init_hw() an unconditionaly
BMCR soft-reset I became quite trigger happy with those. This was later
on deactivated for the Generic PHY driver on the premise that a prior
software entity (e.g: bootloader) might have applied workarounds in
commit 0878fff1f42c ("net: phy: Do not perform software reset for
Generic PHY").

Since we have a hook to wire-up a soft_reset callback, just use that and
get rid of the call to genphy_soft_reset() entirely. This speeds up
initialization and link establishment for most PHYs out there that do
not require a reset.

Fixes: 87aa9f9c61ad ("net: phy: consolidate PHY reset in phy_init_hw()")
Tested-by: Wang, Dongsheng <dongsheng.wang@hxt-semitech.com>
Tested-by: Chris Healy <cphealy@gmail.com>
Tested-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Clemens Gruber <clemens.gruber@pqgruber.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
---
 drivers/net/phy/phy_device.c | 2 --
 1 file changed, 2 deletions(-)

--- a/drivers/net/phy/phy_device.c
+++ b/drivers/net/phy/phy_device.c
@@ -886,8 +886,6 @@ int phy_init_hw(struct phy_device *phyde
 
 	if (phydev->drv->soft_reset)
 		ret = phydev->drv->soft_reset(phydev);
-	else
-		ret = genphy_soft_reset(phydev);
 
 	if (ret < 0)
 		return ret;