netdev - [PATCH net-next 2/5] net: phy: remove useless check in state machine case PHY

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Message-ID: <f3c22c3b-df1b-df8b-71bf-53005b76c4ee@gmail.com>
Date:   Wed, 7 Nov 2018 20:44:56 +0100
From:   Heiner Kallweit <hkallweit1@...il.com>
To:     Florian Fainelli <f.fainelli@...il.com>,
        Andrew Lunn <andrew@...n.ch>,
        David Miller <davem@...emloft.net>
Cc:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: [PATCH net-next 2/5] net: phy: remove useless check in state machine
 case PHY_RESUMING

If aneg isn't finished yet then the PHY reports the link as down.
There's no benefit in setting the state to PHY_AN because the next
state machine run would set the status to PHY_NOLINK anyway (except
in the meantime aneg has been finished and link is up). Therefore
we can set the state to PHY_RUNNING or PHY_NOLINK directly.

In addition change the do_carrier parameter in phy_link_down() to true.
If carrier was marked as up before (what should never be the case because
PHY was in state PHY_HALTED before) then we should mark it as down now.

Signed-off-by: Heiner Kallweit <hkallweit1@...il.com>
---
 drivers/net/phy/phy.c | 13 +------------
 1 file changed, 1 insertion(+), 12 deletions(-)

diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c
index 87c6d304c..14dffa0da 100644
--- a/drivers/net/phy/phy.c
+++ b/drivers/net/phy/phy.c
@@ -1022,17 +1022,6 @@ void phy_state_machine(struct work_struct *work)
 		}
 		break;
 	case PHY_RESUMING:
-		if (AUTONEG_ENABLE == phydev->autoneg) {
-			err = phy_aneg_done(phydev);
-			if (err < 0) {
-				break;
-			} else if (!err) {
-				phydev->state = PHY_AN;
-				phydev->link_timeout = PHY_AN_TIMEOUT;
-				break;
-			}
-		}
-
 		err = phy_read_status(phydev);
 		if (err)
 			break;
@@ -1042,7 +1031,7 @@ void phy_state_machine(struct work_struct *work)
 			phy_link_up(phydev);
 		} else	{
 			phydev->state = PHY_NOLINK;
-			phy_link_down(phydev, false);
+			phy_link_down(phydev, true);
 		}
 		break;
 	}
-- 
2.19.1