[Qemu-devel] [PATCH] Adds null check for DisplayStatus

[Stefano Stabellini <stefano.stabellini@eu.citrix.com>]

Allocate a DisplaySurface in dumb_display_init if none else does it.
The DisplaySurface will be used for the qemu monitor, serial and
parallel ports, etc.

Signed-off-by: Andrew May  <acmay@acmay.homeip.net>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>

diff --git a/vl.c b/vl.c
index 63d954b..b246e47 100644
--- a/vl.c
+++ b/vl.c
@@ -2778,6 +2778,11 @@ DisplayState *get_displaystate(void)
 static void dumb_display_init(void)
 {
     DisplayState *ds = qemu_mallocz(sizeof(DisplayState));
+    if (ds == NULL) {
+        fprintf(stderr, "dumb_display_init: DisplayState allocation failed\n");
+        exit(1);
+    }
+    ds->surface = qemu_create_displaysurface(640, 480, 32, 640 * 4);
     register_displaystate(ds);
 }