From: Ian Jackson <ian.jackson@eu.citrix.com>
Date: Fri, 21 May 2010 14:46:55 +0000 (+0100)
Subject: Wait for frontend state Connected before connecting the backend
X-Git-Tag: anthony.last_qemu_master~4
X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=805ed3b20492d2f4bb465bfda65cedd286e23209;p=qemu-xen-4.2-testing.git

Wait for frontend state Connected before connecting the backend

The frontend of the framebuffer set a value (request-abs-pointer) and go
to the state Connected.  The backend must read this value only when the
frontend has the state Connected.

From: Anthony PERARD <anthony.perard@citrix.com>
Tested-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
---

diff --git a/hw/xen_backend.c b/hw/xen_backend.c
index 76d07ecd3..31ed7b07f 100644
--- a/hw/xen_backend.c
+++ b/hw/xen_backend.c
@@ -411,8 +411,7 @@ static int xen_be_try_connect(struct XenDevice *xendev)
 {
     int rc = 0;
 
-    if (xendev->fe_state != XenbusStateInitialised  &&
-	xendev->fe_state != XenbusStateConnected) {
+    if (xendev->fe_state != XenbusStateConnected) {
 	if (xendev->ops->flags & DEVOPS_FLAG_IGNORE_STATE) {
 	    xen_be_printf(xendev, 2, "frontend not ready, ignoring\n");
 	} else {