# HG changeset patch
# User yamahata@xxxxxxxxxxxxx
# Date 1163136972 -32400
# Node ID f4cb96c1d8ef2a55ecdfcf4496da1dc8ce8d968c
# Parent  10cd8f17f3e583282fd4d8efa7d6f05f4a122319
fix xencomm_handle_is_null().
It checks only desc->address[0]. However xencomm_add_offset() may
sets XENCOMM_INVALID while there left consumable bytes.
In such a case xencomm_handle_is_null() returns true wrongly.
PATCHNAME: xencomm_handle_is_null_fix

Signed-off-by: Isaku Yamahata <yamahata@xxxxxxxxxxxxx>

diff -r 10cd8f17f3e5 -r f4cb96c1d8ef xen/arch/ia64/xen/xencomm.c
--- a/xen/arch/ia64/xen/xencomm.c	Fri Nov 10 14:34:10 2006 +0900
+++ b/xen/arch/ia64/xen/xencomm.c	Fri Nov 10 14:36:12 2006 +0900
@@ -382,6 +382,6 @@ xencomm_handle_is_null(
             return 1;
 
         desc = (struct xencomm_desc *)desc_addr;
-        return (desc->address[0] == XENCOMM_INVALID);
-    }
-}
+        return (desc->nr_addrs == 0);
+    }
+}