1 files changed, 17 insertions, 3 deletions

diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c
index cfcfd5ab06ce..742a5bc44be8 100644
--- a/drivers/usb/serial/usb-serial.c
+++ b/drivers/usb/serial/usb-serial.c
@@ -204,6 +204,11 @@ static int serial_open (struct tty_struct *tty, struct file *filp)
                 goto bailout_kref_put;
         }
 
+        if (port->serial->disconnected) {
+                retval = -ENODEV;
+                goto bailout_kref_put;
+        }
+
         if (mutex_lock_interruptible(&port->mutex)) {
                 retval = -ERESTARTSYS;
                 goto bailout_kref_put;
@@ -1067,6 +1072,8 @@ int usb_serial_suspend(struct usb_interface *intf, pm_message_t message)
         struct usb_serial_port *port;
         int i, r = 0;
 
+        serial->suspending = 1;
+
         for (i = 0; i < serial->num_ports; ++i) {
                 port = serial->port[i];
                 if (port)
@@ -1083,10 +1090,15 @@ EXPORT_SYMBOL(usb_serial_suspend);
 int usb_serial_resume(struct usb_interface *intf)
 {
         struct usb_serial *serial = usb_get_intfdata(intf);
+        int rv;
 
+        serial->suspending = 0;
         if (serial->type->resume)
-                return serial->type->resume(serial);
-        return 0;
+                rv = serial->type->resume(serial);
+        else
+                rv = usb_serial_generic_resume(serial);
+
+        return rv;
 }
 EXPORT_SYMBOL(usb_serial_resume);
 
@@ -1222,7 +1234,6 @@ static void fixup_generic(struct usb_serial_driver *device)
         set_to_generic_if_null(device, read_bulk_callback);
         set_to_generic_if_null(device, write_bulk_callback);
         set_to_generic_if_null(device, shutdown);
-        set_to_generic_if_null(device, resume);
 }
 
 int usb_serial_register(struct usb_serial_driver *driver)
@@ -1230,6 +1241,9 @@ int usb_serial_register(struct usb_serial_driver *driver)
         /* must be called with BKL held */
         int retval;
 
+        if (usb_disabled())
+                return -ENODEV;
+
         fixup_generic(driver);
 
         if (!driver->description)