net: bcmgenet: Indicate MAC is in charge of PHY PM

commit bc3410f250219660a7be032c01c954a53b2c26ab upstream.

Avoid the PHY library call unnecessarily into the suspend/resume functions by
setting phydev->mac_managed_pm to true. The GENET driver essentially does
exactly what mdio_bus_phy_resume() does by calling phy_init_hw() plus
phy_resume().

Fixes: fba863b81604 ("net: phy: make PHY PM ops a no-op if MAC driver manages PHY PM")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20220804173605.1266574-1-f.fainelli@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/net/ethernet/broadcom/genet/bcmmii.c b/drivers/net/ethernet/broadcom/genet/bcmmii.c
index 89d16c5..dbd2ede 100644 (file)
--- a/drivers/net/ethernet/broadcom/genet/bcmmii.c
+++ b/drivers/net/ethernet/broadcom/genet/bcmmii.c
@@ -361,6 +361,9 @@ int bcmgenet_mii_probe(struct net_device *dev)
        if (priv->internal_phy && !GENET_IS_V5(priv))
                dev->phydev->irq = PHY_MAC_INTERRUPT;
 
+       /* Indicate that the MAC is responsible for PHY PM */
+       dev->phydev->mac_managed_pm = true;
+
        return 0;
 }