3.2-stable review patch. If anyone has any objections, please let me know.
------------------
From: Wei Liu <wei.l...@citrix.com>
commit e7e44e444876478d50630f57b0c31d29f6725020 upstream.
Signed-off-by: Wei Liu <wei.l...@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.w...@oracle.com>
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings <b...@decadent.org.uk>
---
drivers/xen/evtchn.c | 10 ++++++++++
1 file changed, 10 insertions(+)
--- a/drivers/xen/evtchn.c
+++ b/drivers/xen/evtchn.c
@@ -269,6 +269,14 @@ static int evtchn_bind_to_user(struct pe
u->name, (void *)(unsigned long)port);
if (rc >= 0)
rc = 0;
+ 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(stru
{
int irq = irq_from_evtchn(port);
+ BUG_ON(irq < 0);
+
unbind_from_irqhandler(irq, (void *)(unsigned long)port);
set_port_user(port, NULL);
--
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