From a7a6b79bc5bd5dda9fdd1adb4a342a4c5ee789a8 Mon Sep 17 00:00:00 2001 From: Ming Lei Date: Tue, 13 Jul 2010 23:56:24 +0800 Subject: [PATCH] USB: serial: enable async suspend for usb serial port device Usb serial port device is child of its usb interface device, so we can enable async suspend of usb serial port device to speedup system suspend. Signed-off-by: Ming Lei Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/usb-serial.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c index 443468e..2a982e6 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, " -- 2.7.4