openwrt/target/linux/generic/backport-4.19/700-v5.1-net-phylink-only-call-mac_config-during-resolve-when.patch

From 6f3ea4e5b1f0867ec217f6101fcb89783ed905d7 Mon Sep 17 00:00:00 2001
From: Russell King <rmk+kernel@armlinux.org.uk>
Date: Sat, 9 Feb 2019 18:23:26 +0000
Subject: [PATCH] net: phylink: only call mac_config() during resolve
 when link is up

There's little point calling mac_config() when the link is down.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
---
 drivers/net/phy/phylink.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

--- a/drivers/net/phy/phylink.c
+++ b/drivers/net/phy/phylink.c
@@ -339,6 +339,13 @@ static void phylink_mac_config(struct ph
 	pl->ops->mac_config(pl->netdev, pl->link_an_mode, state);
 }
 
+static void phylink_mac_config_up(struct phylink *pl,
+				  const struct phylink_link_state *state)
+{
+	if (state->link)
+		phylink_mac_config(pl, state);
+}
+
 static void phylink_mac_an_restart(struct phylink *pl)
 {
 	if (pl->link_config.an_enabled &&
@@ -442,12 +449,12 @@ static void phylink_resolve(struct work_
 		case MLO_AN_PHY:
 			link_state = pl->phy_state;
 			phylink_resolve_flow(pl, &link_state);
-			phylink_mac_config(pl, &link_state);
+			phylink_mac_config_up(pl, &link_state);
 			break;
 
 		case MLO_AN_FIXED:
 			phylink_get_fixed_state(pl, &link_state);
-			phylink_mac_config(pl, &link_state);
+			phylink_mac_config_up(pl, &link_state);
 			break;
 
 		case MLO_AN_INBAND: