netdev - [PATCH net-next 0/2] net: phy: add device-managed devm_mdiobus

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Message-ID: <9b83837d-d246-ffb0-0c52-8d4c5064e7e4@gmail.com>
Date:   Mon, 20 Apr 2020 23:28:19 +0200
From:   Heiner Kallweit <hkallweit1@...il.com>
To:     Andrew Lunn <andrew@...n.ch>,
        Florian Fainelli <f.fainelli@...il.com>,
        David Miller <davem@...emloft.net>
Cc:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: [PATCH net-next 0/2] net: phy: add device-managed
 devm_mdiobus_register

If there's no special ordering requirement for mdiobus_unregister(),
then driver code can be simplified by using a device-managed version
of mdiobus_register(). Prerequisite is that bus allocation has been
done device-managed too. Else mdiobus_free() may be called whilst
bus is still registered, resulting in a BUG_ON(). Therefore let
devm_mdiobus_register() return -EPERM if bus was allocated
non-managed.

First user of the new functionality is r8169 driver.

Heiner Kallweit (2):
  net: phy: add device-managed devm_mdiobus_register
  r8169: use devm_mdiobus_register

 drivers/net/ethernet/realtek/r8169_main.c | 10 ++--------
 drivers/net/phy/mdio_bus.c                |  8 +++++++-
 include/linux/phy.h                       | 17 +++++++++++++++++
 3 files changed, 26 insertions(+), 9 deletions(-)

-- 
2.26.1