netdev - [PATCH net-next 2/3] net: phylink: clear SFP interfaces when not in use

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Message-Id: <E1uWu0z-005KXi-EM@rmk-PC.armlinux.org.uk>
Date: Wed, 02 Jul 2025 10:44:29 +0100
From: "Russell King (Oracle)" <rmk+kernel@...linux.org.uk>
To: Andrew Lunn <andrew@...n.ch>,
	Heiner Kallweit <hkallweit1@...il.com>
Cc: Alexander Duyck <alexander.duyck@...il.com>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	netdev@...r.kernel.org,
	Paolo Abeni <pabeni@...hat.com>
Subject: [PATCH net-next 2/3] net: phylink: clear SFP interfaces when not in
 use

Clear the SFP interfaces bitmap when we're not using it - in other
words, when a module is unplugged, or we're using a PHY on the
module.

Signed-off-by: Russell King (Oracle) <rmk+kernel@...linux.org.uk>
---
 drivers/net/phy/phylink.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/drivers/net/phy/phylink.c b/drivers/net/phy/phylink.c
index 6420e76f8ab1..c92a878ab717 100644
--- a/drivers/net/phy/phylink.c
+++ b/drivers/net/phy/phylink.c
@@ -3536,6 +3536,8 @@ static int phylink_sfp_config_phy(struct phylink *pl, struct phy_device *phy)
 	struct phylink_link_state config;
 	int ret;
 
+	/* We're not using pl->sfp_interfaces, so clear it. */
+	phy_interface_zero(pl->sfp_interfaces);
 	linkmode_copy(support, phy->supported);
 
 	memset(&config, 0, sizeof(config));
@@ -3673,6 +3675,13 @@ static int phylink_sfp_module_insert(void *upstream,
 	return phylink_sfp_config_optical(pl);
 }
 
+static void phylink_sfp_module_remove(void *upstream)
+{
+	struct phylink *pl = upstream;
+
+	phy_interface_zero(pl->sfp_interfaces);
+}
+
 static int phylink_sfp_module_start(void *upstream)
 {
 	struct phylink *pl = upstream;
@@ -3757,6 +3766,7 @@ static const struct sfp_upstream_ops sfp_phylink_ops = {
 	.attach = phylink_sfp_attach,
 	.detach = phylink_sfp_detach,
 	.module_insert = phylink_sfp_module_insert,
+	.module_remove = phylink_sfp_module_remove,
 	.module_start = phylink_sfp_module_start,
 	.module_stop = phylink_sfp_module_stop,
 	.link_up = phylink_sfp_link_up,
-- 
2.30.2