Commit 9121b15b authored by Juergen Gross's avatar Juergen Gross Committed by Bartlomiej Zolnierkiewicz

xen, fbfront: fix connecting to backend

Connecting to the backend isn't working reliably in xen-fbfront: in
case XenbusStateInitWait of the backend has been missed the backend
transition to XenbusStateConnected will trigger the connected state
only without doing the actions required when the backend has
connected.

Cc: stable@vger.kernel.org
Signed-off-by: default avatarJuergen Gross <jgross@suse.com>
Reviewed-by: default avatarBoris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: default avatarBartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
parent cfc5b2b5
...@@ -643,7 +643,6 @@ static void xenfb_backend_changed(struct xenbus_device *dev, ...@@ -643,7 +643,6 @@ static void xenfb_backend_changed(struct xenbus_device *dev,
break; break;
case XenbusStateInitWait: case XenbusStateInitWait:
InitWait:
xenbus_switch_state(dev, XenbusStateConnected); xenbus_switch_state(dev, XenbusStateConnected);
break; break;
...@@ -654,7 +653,8 @@ static void xenfb_backend_changed(struct xenbus_device *dev, ...@@ -654,7 +653,8 @@ static void xenfb_backend_changed(struct xenbus_device *dev,
* get Connected twice here. * get Connected twice here.
*/ */
if (dev->state != XenbusStateConnected) if (dev->state != XenbusStateConnected)
goto InitWait; /* no InitWait seen yet, fudge it */ /* no InitWait seen yet, fudge it */
xenbus_switch_state(dev, XenbusStateConnected);
if (xenbus_read_unsigned(info->xbdev->otherend, if (xenbus_read_unsigned(info->xbdev->otherend,
"request-update", 0)) "request-update", 0))
......
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