1 files changed, 2 insertions, 1 deletions
diff --git a/hw/s390x/css.c b/hw/s390x/css.c
index 177cbfc92d..1880b1a0ff 100644
--- a/hw/s390x/css.c
+++ b/hw/s390x/css.c
@@ -885,7 +885,8 @@ static int css_interpret_ccw(SubchDev *sch, hwaddr ccw_addr,
             ret = -EINVAL;
             break;
         }
-        if (ccw.flags & (CCW_FLAG_CC | CCW_FLAG_DC)) {
+        if (ccw.flags || ccw.count) {
+            /* We have already sanitized these if converted from fmt 0. */
             ret = -EINVAL;
             break;
         }