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

   1 From 1541649a9dd79e9b941d399de564475e426a2d0b Mon Sep 17 00:00:00 2001
   2 From: Florian Fainelli <f.fainelli@gmail.com>
   3 Date: Tue, 25 Sep 2018 11:28:45 -0700
   4 Subject: [PATCH 602/660] net: phy: Stop with excessive soft reset
   5
   6 While consolidating the PHY reset in phy_init_hw() an unconditionaly
   7 BMCR soft-reset I became quite trigger happy with those. This was later
   8 on deactivated for the Generic PHY driver on the premise that a prior
   9 software entity (e.g: bootloader) might have applied workarounds in
  10 commit 0878fff1f42c ("net: phy: Do not perform software reset for
  11 Generic PHY").
  12
  13 Since we have a hook to wire-up a soft_reset callback, just use that and
  14 get rid of the call to genphy_soft_reset() entirely. This speeds up
  15 initialization and link establishment for most PHYs out there that do
  16 not require a reset.
  17
  18 Fixes: 87aa9f9c61ad ("net: phy: consolidate PHY reset in phy_init_hw()")
  19 Tested-by: Wang, Dongsheng <dongsheng.wang@hxt-semitech.com>
  20 Tested-by: Chris Healy <cphealy@gmail.com>
  21 Tested-by: Andrew Lunn <andrew@lunn.ch>
  22 Tested-by: Clemens Gruber <clemens.gruber@pqgruber.com>
  23 Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
  24 Signed-off-by: David S. Miller <davem@davemloft.net>
  25 Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
  26 ---
  27  drivers/net/phy/phy_device.c | 2 --
  28  1 file changed, 2 deletions(-)
  29
  30 --- a/drivers/net/phy/phy_device.c
  31 +++ b/drivers/net/phy/phy_device.c
  32 @@ -892,8 +892,6 @@ int phy_init_hw(struct phy_device *phyde
  33
  34         if (phydev->drv->soft_reset)
  35                 ret = phydev->drv->soft_reset(phydev);
  36 -       else
  37 -               ret = genphy_soft_reset(phydev);
  38
  39         if (ret < 0)
  40                 return ret;