1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/infiniband/core/cm.c b/drivers/infiniband/core/cm.c
index 98281fe5ea4b..784b97cb05b0 100644
--- a/drivers/infiniband/core/cm.c
+++ b/drivers/infiniband/core/cm.c
@@ -390,7 +390,7 @@ static int cm_alloc_id(struct cm_id_private *cm_id_priv)
 
         id = idr_alloc(&cm.local_id_table, cm_id_priv, next_id, 0, GFP_NOWAIT);
         if (id >= 0)
-                next_id = ((unsigned) id + 1) & MAX_IDR_MASK;
+                next_id = max(id + 1, 0);
 
         spin_unlock_irqrestore(&cm.lock, flags);
         idr_preload_end();