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authorMing Lei <tom.leiming@gmail.com>2010-07-13 19:56:24 +0400
committerGreg Kroah-Hartman <gregkh@suse.de>2010-08-11 01:35:39 +0400
commita7a6b79bc5bd5dda9fdd1adb4a342a4c5ee789a8 (patch)
tree69e4a66d57271fb1d4f307801f06aedd7c0a50a5 /drivers/usb/serial/usb-serial.c
parentd0390d92bf548a903a48e1a2b3a12eff8a9d838b (diff)
downloadlinux-a7a6b79bc5bd5dda9fdd1adb4a342a4c5ee789a8.tar.xz
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 <tom.leiming@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/serial/usb-serial.c')
-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, "