This is a note to let you know that I've just added the patch titled
net: bcmgenet: Indicate MAC is in charge of PHY PM
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
net-bcmgenet-indicate-mac-is-in-charge-of-phy-pm.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From bc3410f250219660a7be032c01c954a53b2c26ab Mon Sep 17 00:00:00 2001
From: Florian Fainelli <f.fainelli@xxxxxxxxx>
Date: Thu, 4 Aug 2022 10:36:04 -0700
Subject: net: bcmgenet: Indicate MAC is in charge of PHY PM
From: Florian Fainelli <f.fainelli@xxxxxxxxx>
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@xxxxxxxxx>
Link: https://lore.kernel.org/r/20220804173605.1266574-1-f.fainelli@xxxxxxxxx
Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
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;
}
Patches currently in stable-queue which might be from f.fainelli@xxxxxxxxx are
queue-5.15/net-phy-warn-about-incorrect-mdio_bus_phy_resume-state.patch
queue-5.15/net-bgmac-fix-a-bug-triggered-by-wrong-bytes_compl.patch
queue-5.15/net-bcmgenet-indicate-mac-is-in-charge-of-phy-pm.patch
