ehci-atmel: Power down during suspend is normal
When an Atmel SoC is suspended with the backup mode, the USB bus will be powered down. As this is expected, do not return an error to the driver core when ehci_resume detects it. Signed-off-by: NRomain Izard <romain.izard.pro@gmail.com> Acked-by: NNicolas Ferre <nicolas.ferre@microchip.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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