minios: Fix xenbus-id allocation loop.

Signed-off-by: Dietmar Hahn <dietmar.hahn@fujitsu-siemens.com>

diff --git a/extras/mini-os/xenbus/xenbus.c b/extras/mini-os/xenbus/xenbus.c
index f2428c12fa38ccd6ad06cefef183d823f5ac04d3..f4832119478052a587ae6859d70c6409a718477a 100644 (file)
--- a/extras/mini-os/xenbus/xenbus.c
+++ b/extras/mini-os/xenbus/xenbus.c
@@ -210,7 +210,7 @@ static int allocate_xenbus_id(void)
     }
     nr_live_reqs++;
     req_info[o_probe].in_use = 1;
-    probe = o_probe + 1;
+    probe = (o_probe + 1) % NR_REQS;
     spin_unlock(&req_lock);
     init_waitqueue_head(&req_info[o_probe].waitq);