uwb: lock rc->rsvs_lock with spin_lock_bh()

rc->rsvs_lock may be taken in a timer so lock it with spin_lock_bh().
Signed-off-by: David Vrabel <david.vrabel@csr.com>

drivers/uwb/drp.c

@@ -66,14 +66,14 @@ static void uwb_rc_set_drp_cmd_done(struct uwb_rc *rc, void *arg,
 	} else
 		dev_err(&rc->uwb_dev.dev, "SET-DRP-IE: timeout\n");
 
-	spin_lock(&rc->rsvs_lock);
+	spin_lock_bh(&rc->rsvs_lock);
 	if (rc->set_drp_ie_pending > 1) {
 		rc->set_drp_ie_pending = 0;
 		uwb_rsv_queue_update(rc);	
 	} else {
 		rc->set_drp_ie_pending = 0;	
 	}
-	spin_unlock(&rc->rsvs_lock);
+	spin_unlock_bh(&rc->rsvs_lock);
 }
 
 /**

drivers/uwb/rsv.c

@@ -870,7 +870,7 @@ void uwb_rsv_queue_update(struct uwb_rc *rc)
  */
 void uwb_rsv_sched_update(struct uwb_rc *rc)
 {
-	spin_lock(&rc->rsvs_lock);
+	spin_lock_bh(&rc->rsvs_lock);
 	if (!delayed_work_pending(&rc->rsv_update_work)) {
 		if (rc->set_drp_ie_pending > 0) {
 			rc->set_drp_ie_pending++;
@@ -879,7 +879,7 @@ void uwb_rsv_sched_update(struct uwb_rc *rc)
 		uwb_rsv_queue_update(rc);
 	}
 unlock:
-	spin_unlock(&rc->rsvs_lock);
+	spin_unlock_bh(&rc->rsvs_lock);
 }
 
 /*