diff options
| -rw-r--r-- | drivers/usb/serial/sierra.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/usb/serial/sierra.c b/drivers/usb/serial/sierra.c index af43ddfd895..bd79d68b51c 100644 --- a/drivers/usb/serial/sierra.c +++ b/drivers/usb/serial/sierra.c @@ -59,6 +59,7 @@ 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) @@ -813,7 +814,6 @@ static void sierra_close(struct usb_serial_port *port) if (serial->dev) { 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); @@ -824,6 +824,8 @@ 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 (;;) { @@ -884,9 +886,10 @@ 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); |