1 files changed, 2 insertions, 0 deletions

diff --git a/include/linux/rio.h b/include/linux/rio.h
index f833773cdc68..948f60550ae5 100644
--- a/include/linux/rio.h
+++ b/include/linux/rio.h
@@ -248,6 +248,7 @@ enum rio_phy_type {
  * @node: Node in global list of master ports
  * @nnode: Node in network list of master ports
  * @net: RIO net this mport is attached to
+ * @lock: lock to synchronize lists manipulations
  * @iores: I/O mem resource that this master port interface owns
  * @riores: RIO resources that this master port interfaces owns
  * @inb_msg: RIO inbound message event descriptors
@@ -271,6 +272,7 @@ struct rio_mport {
         struct list_head node;  /* node in global list of ports */
         struct list_head nnode; /* node in net list of ports */
         struct rio_net *net;    /* RIO net this mport is attached to */
+        struct mutex lock;
         struct resource iores;
         struct resource riores[RIO_MAX_MPORT_RESOURCES];
         struct rio_msg inb_msg[RIO_MAX_MBOX];