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If reading the Interrupt Source Flag register fails with -ENODEV, then the PHY has been hot-removed and the correct response is to bail out instead of throwing a WARN splat and attempting to suspend the PHY. The PHY should be stopped in due course anyway as the kernel asynchronously tears down the device. Tested-by: Oleksij Rempel <o.rempel@pengutronix.de> # LAN9514/9512/9500 Tested-by: Ferry Toth <fntoth@gmail.com> # LAN9514 Signed-off-by: Lukas Wunner <lukas@wunner.de> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>