[PATCH 5.15 059/244] net: bcmgenet: Indicate MAC is in charge of PHY PM

Greg Kroah-Hartman
2022-08-23T09:51:50Z

From: Florian Fainelli <f.fainelli@gmail.com>

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>
---
drivers/net/ethernet/broadcom/genet/bcmmii.c | 3 +++
1 file changed, 3 insertions(+)

--- 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
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;
}