This is a note to let you know that I've just added the patch titled
net: stmmac: trigger PCS EEE to turn off on link down
to the 5.14-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-stmmac-trigger-pcs-eee-to-turn-off-on-link-down.patch
and it can be found in the queue-5.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 2cb5389b763b6edfc1be97701dd3226db0af39b3
Author: Wong Vee Khee <vee.khee.wong@xxxxxxxxxxxxxxx>
Date: Tue Oct 5 19:51:00 2021 +0800
net: stmmac: trigger PCS EEE to turn off on link down
[ Upstream commit d4aeaed80b0ebb020fadf2073b23462928dbdc17 ]
The current implementation enable PCS EEE feature in the event of link
up, but PCS EEE feature is not disabled on link down.
This patch makes sure PCE EEE feature is disabled on link down.
Fixes: 656ed8b015f1 ("net: stmmac: fix EEE init issue when paired with EEE capable PHYs")
Signed-off-by: Wong Vee Khee <vee.khee.wong@xxxxxxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index 86151a817b79..6b2a5e5769e8 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -477,6 +477,10 @@ bool stmmac_eee_init(struct stmmac_priv *priv)
stmmac_lpi_entry_timer_config(priv, 0);
del_timer_sync(&priv->eee_ctrl_timer);
stmmac_set_eee_timer(priv, priv->hw, 0, eee_tw_timer);
+ if (priv->hw->xpcs)
+ xpcs_config_eee(priv->hw->xpcs,
+ priv->plat->mult_fact_100ns,
+ false);
}
mutex_unlock(&priv->lock);
return false;
@@ -1038,7 +1042,7 @@ static void stmmac_mac_link_down(struct phylink_config *config,
stmmac_mac_set(priv, priv->ioaddr, false);
priv->eee_active = false;
priv->tx_lpi_enabled = false;
- stmmac_eee_init(priv);
+ priv->eee_enabled = stmmac_eee_init(priv);
stmmac_set_eee_pls(priv, priv->hw, false);
if (priv->dma_cap.fpesel)
