1 files changed, 7 insertions, 0 deletions

diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c
index 7a2177c79bde..6afd8e848117 100644
--- a/drivers/usb/serial/usb-serial.c
+++ b/drivers/usb/serial/usb-serial.c
@@ -52,6 +52,7 @@ static struct usb_driver usb_serial_driver = {
         .suspend =      usb_serial_suspend,
         .resume =       usb_serial_resume,
         .no_dynamic_id =        1,
+        .supports_autosuspend = 1,
 };
 
 /* There is no MODULE_DEVICE_TABLE for usbserial.c.  Instead
@@ -1334,6 +1335,12 @@ int usb_serial_register(struct usb_serial_driver *driver)
 
         if (!driver->description)
                 driver->description = driver->driver.name;
+        if (!driver->usb_driver) {
+                WARN(1, "Serial driver %s has no usb_driver\n",
+                                driver->description);
+                return -EINVAL;
+        }
+        driver->usb_driver->supports_autosuspend = 1;
 
         /* Add this device to our list of devices */
         mutex_lock(&table_lock);