From b1754a69e7be48a64b3cdb0df60a96d97959da73 Mon Sep 17 00:00:00 2001 From: "Russell King (Oracle)" Date: Mon, 20 Jan 2025 10:28:54 +0000 Subject: [PATCH] net: phylink: fix regression when binding a PHY Some PHYs don't support clause 45 access, and return -EOPNOTSUPP from phy_modify_mmd(), which causes phylink_bringup_phy() to fail. Prevent this failure by allowing -EOPNOTSUPP to also mean success. Reported-by: Jiawen Wu Tested-by: Jiawen Wu Signed-off-by: Russell King (Oracle) Reviewed-by: Simon Horman Link: https://patch.msgid.link/E1tZp1a-001V62-DT@rmk-PC.armlinux.org.uk Signed-off-by: Jakub Kicinski --- drivers/net/phy/phylink.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/net/phy/phylink.c b/drivers/net/phy/phylink.c index d130634d3bc71..214b62fba991e 100644 --- a/drivers/net/phy/phylink.c +++ b/drivers/net/phy/phylink.c @@ -2268,7 +2268,11 @@ static int phylink_bringup_phy(struct phylink *pl, struct phy_device *phy, /* Explicitly configure whether the PHY is allowed to stop it's * receive clock. */ - return phy_eee_rx_clock_stop(phy, pl->config->eee_rx_clk_stop_enable); + ret = phy_eee_rx_clock_stop(phy, pl->config->eee_rx_clk_stop_enable); + if (ret == -EOPNOTSUPP) + ret = 0; + + return ret; } static int phylink_attach_phy(struct phylink *pl, struct phy_device *phy,