Remove dumb_refresh

It is safe not to set dpy_refresh and that's used to indicate that the display
doesn't need updates.  This saves us two wakeups per second.
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>



git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5583 c046a42c-6fe2-441c-8c8c-71466251a162

vl.c

@@ -2510,13 +2510,6 @@ static void dumb_resize(DisplayState *ds, int w, int h)
 {
 }
 
-static void dumb_refresh(DisplayState *ds)
-{
-#if defined(CONFIG_SDL)
-    vga_hw_update();
-#endif
-}
-
 static void dumb_display_init(DisplayState *ds)
 {
     ds->data = NULL;
@@ -2524,8 +2517,8 @@ static void dumb_display_init(DisplayState *ds)
     ds->depth = 0;
     ds->dpy_update = dumb_update;
     ds->dpy_resize = dumb_resize;
-    ds->dpy_refresh = dumb_refresh;
-    ds->gui_timer_interval = 500;
+    ds->dpy_refresh = NULL;
+    ds->gui_timer_interval = 0;
     ds->idle = 1;
 }