netdev - [PATCH net-next 0/5] net: phy: improve and simplify phylib state machine

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Date:   Wed, 7 Nov 2018 20:41:52 +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 0/5] net: phy: improve and simplify phylib state
 machine

This patch series is based on two axioms:

- During autoneg a PHY always reports the link being down

- Info in clause 22/45 registers doesn't allow to differentiate between
  these two states:
  1. Link is physically down
  2. A link partner is connected and PHY is autonegotiating
  In both cases "link up" and "aneg finished" bits aren't set.
  One consequence is that having separate states PHY_NOLINK and PHY_AN
  isn't needed.

By using these two axioms the state machine can be significantly
simplified.

Heiner Kallweit (5):
  net: phy: remove useless check in state machine case PHY_NOLINK
  net: phy: remove useless check in state machine case PHY_RESUMING
  net: phy: add phy_check_link_status
  net: phy: remove state PHY_AN
  net: phy: use phy_check_link_status in more places in the state machine

 drivers/net/phy/phy.c | 172 +++++++++++-------------------------------
 include/linux/phy.h   |  19 +----
 2 files changed, 46 insertions(+), 145 deletions(-)

-- 
2.19.1