Merge branch 'usb-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6

* 'usb-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6: (172 commits)
  USB: Add support for SuperSpeed isoc endpoints
  xhci: Clean up cycle bit math used during stalls.
  xhci: Fix cycle bit calculation during stall handling.
  xhci: Update internal dequeue pointers after stalls.
  USB: Disable auto-suspend for USB 3.0 hubs.
  USB: Remove bogus USB_PORT_STAT_SUPER_SPEED symbol.
  xhci: Return canceled URBs immediately when host is halted.
  xhci: Fixes for suspend/resume of shared HCDs.
  xhci: Fix re-init on power loss after resume.
  xhci: Make roothub functions deal with device removal.
  xhci: Limit roothub ports to 15 USB3 & 31 USB2 ports.
  xhci: Return a USB 3.0 hub descriptor for USB3 roothub.
  xhci: Register second xHCI roothub.
  xhci: Change xhci_find_slot_id_by_port() API.
  xhci: Refactor bus suspend state into a struct.
  xhci: Index with a port array instead of PORTSC addresses.
  USB: Set usb_hcd->state and flags for shared roothubs.
  usb: Make core allocate resources per PCI-device.
  usb: Store bus type in usb_hcd, not in driver flags.
  usb: Change usb_hcd->bandwidth_mutex to a pointer.
  ...

1 files changed, 12 insertions, 4 deletions

diff --git a/drivers/usb/serial/sierra.c b/drivers/usb/serial/sierra.c
index 0457813eebee..5b88b6836a81 100644
--- a/drivers/usb/serial/sierra.c
+++ b/drivers/usb/serial/sierra.c
@@ -376,7 +376,10 @@ static int sierra_send_setup(struct usb_serial_port *port)
 	if (!do_send)
 		return 0;
 
-	usb_autopm_get_interface(serial->interface);
+	retval = usb_autopm_get_interface(serial->interface);
+	if (retval < 0)
+		return retval;
+
 	retval = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
 		0x22, 0x21, val, interface, NULL, 0, USB_CTRL_SET_TIMEOUT);
 	usb_autopm_put_interface(serial->interface);
@@ -811,8 +814,12 @@ static void sierra_close(struct usb_serial_port *port)
 		mutex_lock(&serial->disc_mutex);
 		if (!serial->disconnected) {
 			serial->interface->needs_remote_wakeup = 0;
-			usb_autopm_get_interface(serial->interface);
-			sierra_send_setup(port);
+			/* odd error handling due to pm counters */
+			if (!usb_autopm_get_interface(serial->interface))
+				sierra_send_setup(port);
+			else
+				usb_autopm_get_interface_no_resume(serial->interface);
+				
 		}
 		mutex_unlock(&serial->disc_mutex);
 		spin_lock_irq(&intfdata->susp_lock);
@@ -865,7 +872,8 @@ static int sierra_open(struct tty_struct *tty, struct usb_serial_port *port)
 		/* get rid of everything as in close */
 		sierra_close(port);
 		/* restore balance for autopm */
-		usb_autopm_put_interface(serial->interface);
+		if (!serial->disconnected)
+			usb_autopm_put_interface(serial->interface);
 		return err;
 	}
 	sierra_send_setup(port);