From: Juergen Gross Date: Fri, 7 Apr 2017 15:28:23 +0000 (+0200) Subject: xen, fbfront: fix connecting to backend X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=8fd97755fec136b6f20e411a27044a2655184fcb;p=GitHub%2FLineageOS%2Fandroid_kernel_samsung_universal7580.git xen, fbfront: fix connecting to backend commit 9121b15b5628b38b4695282dc18c553440e0f79b upstream. 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. Signed-off-by: Juergen Gross Reviewed-by: Boris Ostrovsky Signed-off-by: Bartlomiej Zolnierkiewicz Signed-off-by: Willy Tarreau --- diff --git a/drivers/video/xen-fbfront.c b/drivers/video/xen-fbfront.c index cd005c227a2..d026bbb4e50 100644 --- a/drivers/video/xen-fbfront.c +++ b/drivers/video/xen-fbfront.c @@ -643,7 +643,6 @@ static void xenfb_backend_changed(struct xenbus_device *dev, break; case XenbusStateInitWait: -InitWait: xenbus_switch_state(dev, XenbusStateConnected); break; @@ -654,7 +653,8 @@ InitWait: * get Connected twice here. */ 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_scanf(XBT_NIL, info->xbdev->otherend, "request-update", "%d", &val) < 0)