xen, fbfront: fix connecting to backend
commit 9121b15b56
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 <jgross@suse.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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parent
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@ -644,7 +644,6 @@ static void xenfb_backend_changed(struct xenbus_device *dev,
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break;
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break;
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case XenbusStateInitWait:
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case XenbusStateInitWait:
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InitWait:
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xenbus_switch_state(dev, XenbusStateConnected);
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xenbus_switch_state(dev, XenbusStateConnected);
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break;
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break;
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@ -655,7 +654,8 @@ InitWait:
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* get Connected twice here.
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* get Connected twice here.
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*/
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*/
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if (dev->state != XenbusStateConnected)
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if (dev->state != XenbusStateConnected)
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goto InitWait; /* no InitWait seen yet, fudge it */
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/* no InitWait seen yet, fudge it */
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xenbus_switch_state(dev, XenbusStateConnected);
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if (xenbus_scanf(XBT_NIL, info->xbdev->otherend,
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if (xenbus_scanf(XBT_NIL, info->xbdev->otherend,
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"request-update", "%d", &val) < 0)
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"request-update", "%d", &val) < 0)
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