fixed blocking io emulation

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2090 c046a42c-6fe2-441c-8c8c-71466251a162

1 files changed, 5 insertions, 1 deletions

diff --git a/vl.c b/vl.c
index 6daed966b1..0504c6f199 100644
--- a/vl.c
+++ b/vl.c
@@ -5200,19 +5200,23 @@ QEMUBH *qemu_bh_new(QEMUBHFunc *cb, void *opaque)
     return bh;
 }
 
-void qemu_bh_poll(void)
+int qemu_bh_poll(void)
 {
     QEMUBH *bh, **pbh;
+    int ret;
 
+    ret = 0;
     for(;;) {
         pbh = &first_bh;
         bh = *pbh;
         if (!bh)
             break;
+        ret = 1;
         *pbh = bh->next;
         bh->scheduled = 0;
         bh->cb(bh->opaque);
     }
+    return ret;
 }
 
 void qemu_bh_schedule(QEMUBH *bh)