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[ Upstream commitc46e78ba9a] The XPCS expects clause 73 (copper backplane) autoneg to follow the ethtool autoneg bit. It actually did that until the blamed commit inaptly replaced state->an_enabled (coming from ethtool) with phylink_autoneg_inband() (coming from the device tree or struct phylink_config), as part of an unrelated phylink_pcs API conversion. Russell King suggests that state->an_enabled from the original code was just a proxy for the ethtool Autoneg bit, and that the correct way of restoring the functionality is to check for this bit in the advertising mask. Fixes:11059740e6("net: pcs: xpcs: convert to phylink_pcs_ops") Link: https://lore.kernel.org/netdev/ZGNt2MFeRolKGFck@shell.armlinux.org.uk/ Suggested-by: Russell King (Oracle) <linux@armlinux.org.uk> Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Sasha Levin <sashal@kernel.org>