--- drivers/usb/gadget/atmel_usba_udc.c

+++ drivers/usb/gadget/atmel_usba_udc.c

@@ -2013,6 +2013,9 @@ static int __init usba_udc_probe(struct

} else {

disable_irq(gpio_to_irq(udc->vbus_pin));

}

+ } else {

+ /* gpio_request fail so use -EINVAL for gpio_is_valid */

+ udc->vbus_pin = -EINVAL;

}

}