1 files changed, 5 insertions, 2 deletions

diff --git a/drivers/usb/serial/sierra.c b/drivers/usb/serial/sierra.c
index 1a42649253a5..37480348e39b 100644
--- a/drivers/usb/serial/sierra.c
+++ b/drivers/usb/serial/sierra.c
@@ -58,6 +58,7 @@ struct sierra_intf_private {
         spinlock_t susp_lock;
         unsigned int suspended:1;
         int in_flight;
+        unsigned int open_ports;
 };
 
 static int sierra_set_power_state(struct usb_device *udev, __u16 swiState)
@@ -768,7 +769,6 @@ static void sierra_close(struct usb_serial_port *port)
 
         mutex_lock(&serial->disc_mutex);
         if (!serial->disconnected) {
-                serial->interface->needs_remote_wakeup = 0;
                 /* odd error handling due to pm counters */
                 if (!usb_autopm_get_interface(serial->interface))
                         sierra_send_setup(port);
@@ -779,6 +779,8 @@ static void sierra_close(struct usb_serial_port *port)
         mutex_unlock(&serial->disc_mutex);
         spin_lock_irq(&intfdata->susp_lock);
         portdata->opened = 0;
+        if (--intfdata->open_ports == 0)
+                serial->interface->needs_remote_wakeup = 0;
         spin_unlock_irq(&intfdata->susp_lock);
 
         for (;;) {
@@ -834,9 +836,10 @@ static int sierra_open(struct tty_struct *tty, struct usb_serial_port *port)
 
         sierra_send_setup(port);
 
-        serial->interface->needs_remote_wakeup = 1;
         spin_lock_irq(&intfdata->susp_lock);
         portdata->opened = 1;
+        if (++intfdata->open_ports == 1)
+                serial->interface->needs_remote_wakeup = 1;
         spin_unlock_irq(&intfdata->susp_lock);
         usb_autopm_put_interface(serial->interface);