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-rw-r--r--drivers/usb/serial/usb-serial.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c
index 443468e9d66e..2a982e62963b 100644
--- a/drivers/usb/serial/usb-serial.c
+++ b/drivers/usb/serial/usb-serial.c
@@ -1071,6 +1071,8 @@ int usb_serial_probe(struct usb_interface *interface,
dev_set_name(&port->dev, "ttyUSB%d", port->number);
dbg ("%s - registering %s", __func__, dev_name(&port->dev));
port->dev_state = PORT_REGISTERING;
+ device_enable_async_suspend(&port->dev);
+
retval = device_add(&port->dev);
if (retval) {
dev_err(&port->dev, "Error registering port device, "