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Commit e7e44e44 authored by Wei Liu's avatar Wei Liu Committed by Konrad Rzeszutek Wilk
Browse files

xen: close evtchn port if binding to irq fails 



CC: stable@vger.kernel.org
Signed-off-by: default avatarWei Liu <wei.liu2@citrix.com>
Signed-off-by: default avatarKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
parent 18283ea7

drivers/xen/evtchn.c

+10 −0
Original line number Diff line number Diff line
@@ -269,6 +269,14 @@ static int evtchn_bind_to_user(struct per_user_data *u, int port) 
				       u->name, (void *)(unsigned long)port);

	if (rc >= 0)

		rc = evtchn_make_refcounted(port);

	else {

		/* bind failed, should close the port now */

		struct evtchn_close close;

		close.port = port;

		if (HYPERVISOR_event_channel_op(EVTCHNOP_close, &close) != 0)

			BUG();

		set_port_user(port, NULL);

	}



	return rc;

}
@@ -277,6 +285,8 @@ static void evtchn_unbind_from_user(struct per_user_data *u, int port) 
{

	int irq = irq_from_evtchn(port);



	BUG_ON(irq < 0);



	unbind_from_irqhandler(irq, (void *)(unsigned long)port);



	set_port_user(port, NULL);