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net: phylink: fix regression when binding a PHY

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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 <jiawenwu@trustnetic.com>
Tested-by: Jiawen Wu <jiawenwu@trustnetic.com>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/E1tZp1a-001V62-DT@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Russell King (Oracle)
2025-01-20 16:32:42 -08:00
committed by Jakub Kicinski
parent d73a4602e9
commit b1754a69e7
1 changed files with 5 additions and 1 deletions
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drivers/net/phy/phylink.c
+5 -1
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@@ -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,