wusb: fix oops when terminating a non-existant reservation

If a reservation was not established, do not try terminating it.

Signed-off-by: David Vrabel <david.vrabel@csr.com>

1 files changed, 5 insertions, 2 deletions

diff --git a/drivers/usb/wusbcore/reservation.c b/drivers/usb/wusbcore/reservation.c
index c37e4f83e54..4ed97360c04 100644
--- a/drivers/usb/wusbcore/reservation.c
+++ b/drivers/usb/wusbcore/reservation.c
@@ -110,6 +110,9 @@ int wusbhc_rsv_establish(struct wusbhc *wusbhc)
  */
 void wusbhc_rsv_terminate(struct wusbhc *wusbhc)
 {
-        uwb_rsv_terminate(wusbhc->rsv);
-        uwb_rsv_destroy(wusbhc->rsv);
+        if (wusbhc->rsv) {
+                uwb_rsv_terminate(wusbhc->rsv);
+                uwb_rsv_destroy(wusbhc->rsv);
+                wusbhc->rsv = NULL;
+        }
 }