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xen-netback: stop the VIF thread before unbinding IRQs

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If the VIF thread is still running after unbinding the Tx and Rx IRQs
in xenvif_disconnect(), the thread may attempt to raise an event which
will BUG (as the irq is unbound).

Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Acked-by: Wei Liu <wei.liu2@citrix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David Vrabel 2013-11-21 15:26:09 +00:00 committed by David S. Miller
parent aec6f90d41
commit db739ef37f
1 changed files with 3 additions and 3 deletions
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6
drivers/net/xen-netback/interface.c
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@ -461,6 +461,9 @@ void xenvif_disconnect(struct xenvif *vif)
if (netif_carrier_ok(vif->dev))
xenvif_carrier_off(vif);
if (vif->task)
kthread_stop(vif->task);
if (vif->tx_irq) {
if (vif->tx_irq == vif->rx_irq)
unbind_from_irqhandler(vif->tx_irq, vif);
@ -471,9 +474,6 @@ void xenvif_disconnect(struct xenvif *vif)
vif->tx_irq = 0;
}
if (vif->task)
kthread_stop(vif->task);
xenvif_unmap_frontend_rings(vif);
}