I have the issue that suspending the MAC-integrated PHY gives an error during system suspend. The sequence is:
1. unconnected PHY/MAC are runtime-suspended already 2. system suspend commences 3. mdio_bus_phy_suspend is called 4. suspend callback of the network driver is called (implicitly MAC/PHY are runtime-resumed before) 5. suspend callback suspends MAC/PHY The problem occurs in step 3. phy_suspend() fails because the MDIO bus isn't accessible due to the chip being runtime-suspended. This series mainly adds a check to not suspend the PHY if the MDIO bus parent is runtime-suspended. Changes in v2: - Check for MDIO bus parent being runtime-suspended before calling phy_ethtool_get_wol() which could access the MDIO bus. Heiner Kallweit (2): net: phy: improve check for when to call phy_resume in mdio_bus_phy_resume net: phy: improve checks when to suspend the PHY drivers/net/phy/phy_device.c | 45 +++++++++++++++++++++--------------- 1 file changed, 26 insertions(+), 19 deletions(-) -- 2.17.0
