From 602cfd24371c092803680c45e6bf847b738f19f0 Mon Sep 17 00:00:00 2001
From: Michael Tokarev <mjt@tls.msk.ru>
Date: Wed, 19 Sep 2012 17:41:26 +0400
Subject: [PATCH] qxl/update_area_io: cleanup invalid parameters handling

This cleans up two additions of almost the same code in commits
511b13e2c9 and ccc2960d654.  While at it, make error paths
consistent (always use 'break' instead of 'return').

Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Cc: Dunrong Huang <riegamaths@gmail.com>
Cc: Alon Levy <alevy@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
 hw/qxl.c | 13 +++----------
 1 file changed, 3 insertions(+), 10 deletions(-)

diff --git a/hw/qxl.c b/hw/qxl.c
index 1aac04b..6b9d5d0 100644
--- a/hw/qxl.c
+++ b/hw/qxl.c
@@ -1547,20 +1547,13 @@ async_common:
         if (d->ram->update_surface > d->ssd.num_surfaces) {
             qxl_set_guest_bug(d, "QXL_IO_UPDATE_AREA: invalid surface id %d\n",
                               d->ram->update_surface);
-            return;
+            break;
         }
-        if (update.left >= update.right || update.top >= update.bottom) {
+        if (update.left >= update.right || update.top >= update.bottom ||
+            update.left < 0 || update.top < 0) {
             qxl_set_guest_bug(d,
                     "QXL_IO_UPDATE_AREA: invalid area (%ux%u)x(%ux%u)\n",
                     update.left, update.top, update.right, update.bottom);
-            return;
-        }
-
-        if (update.left < 0 || update.top < 0 || update.left >= update.right ||
-            update.top >= update.bottom) {
-            qxl_set_guest_bug(d, "QXL_IO_UPDATE_AREA: "
-                              "invalid area(%d,%d,%d,%d)\n", update.left,
-                              update.right, update.top, update.bottom);
             break;
         }
         if (async == QXL_ASYNC) {