X-Git-Url: https://git.karo-electronics.de/?a=blobdiff_plain;f=drivers%2Fvideo%2Fxen-fbfront.c;h=3e6934d4bea8eb24a7a538235eaf71141c84d02f;hb=9f99a2f0e44663517b99b69a3e4a499d0ba877df;hp=4abb0b9ed653620e4d7f17c6b94749e0ca8c8593;hpb=8c8ae4e8cd5a67467192f3361eeec463694f8ed8;p=mv-sheeva.git

diff --git a/drivers/video/xen-fbfront.c b/drivers/video/xen-fbfront.c
index 4abb0b9ed65..3e6934d4bea 100644
--- a/drivers/video/xen-fbfront.c
+++ b/drivers/video/xen-fbfront.c
@@ -562,26 +562,24 @@ static void xenfb_init_shared_page(struct xenfb_info *info,
 static int xenfb_connect_backend(struct xenbus_device *dev,
 				 struct xenfb_info *info)
 {
-	int ret, evtchn;
+	int ret, evtchn, irq;
 	struct xenbus_transaction xbt;
 
 	ret = xenbus_alloc_evtchn(dev, &evtchn);
 	if (ret)
 		return ret;
-	ret = bind_evtchn_to_irqhandler(evtchn, xenfb_event_handler,
+	irq = bind_evtchn_to_irqhandler(evtchn, xenfb_event_handler,
 					0, dev->devicetype, info);
-	if (ret < 0) {
+	if (irq < 0) {
 		xenbus_free_evtchn(dev, evtchn);
 		xenbus_dev_fatal(dev, ret, "bind_evtchn_to_irqhandler");
-		return ret;
+		return irq;
 	}
-	info->irq = ret;
-
  again:
 	ret = xenbus_transaction_start(&xbt);
 	if (ret) {
 		xenbus_dev_fatal(dev, ret, "starting transaction");
-		return ret;
+		goto unbind_irq;
 	}
 	ret = xenbus_printf(xbt, dev->nodename, "page-ref", "%lu",
 			    virt_to_mfn(info->page));
@@ -603,20 +601,25 @@ static int xenfb_connect_backend(struct xenbus_device *dev,
 		if (ret == -EAGAIN)
 			goto again;
 		xenbus_dev_fatal(dev, ret, "completing transaction");
-		return ret;
+		goto unbind_irq;
 	}
 
 	xenbus_switch_state(dev, XenbusStateInitialised);
+	info->irq = irq;
 	return 0;
 
  error_xenbus:
 	xenbus_transaction_end(xbt, 1);
 	xenbus_dev_fatal(dev, ret, "writing xenstore");
+ unbind_irq:
+	unbind_from_irqhandler(irq, info);
 	return ret;
 }
 
 static void xenfb_disconnect_backend(struct xenfb_info *info)
 {
+	/* Prevent xenfb refresh */
+	info->update_wanted = 0;
 	if (info->irq >= 0)
 		unbind_from_irqhandler(info->irq, info);
 	info->irq = -1;