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[ Upstream commite9cb929670] Both to_mdio_device() and to_phy_device() "throw away" the const pointer attribute passed to them and return a non-const pointer, which generally is not a good thing overall. Fix this up by using container_of_const() which was designed for this very problem. Cc: Alexander Lobakin <alobakin@pm.me> Cc: Andrew Lunn <andrew@lunn.ch> Cc: Heiner Kallweit <hkallweit1@gmail.com> Cc: Russell King <linux@armlinux.org.uk> Fixes:7eab14de73("mdio, phy: fix -Wshadow warnings triggered by nested container_of()") Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://patch.msgid.link/2025052246-conduit-glory-8fc9@gregkh Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>