[3.13.y-ckt stable] Patch "xen/events: Set irq_info->evtchn before binding the channel to CPU in __startup_pirq()" has been added to staging queue

[Kamal Mostafa]

This is a note to let you know that I have just added a patch titled

    xen/events: Set irq_info->evtchn before binding the channel to CPU in __startup_pirq()

to the linux-3.13.y-queue branch of the 3.13.y-ckt extended stable tree 
which can be found at:

    http://kernel.ubuntu.com/git/ubuntu/linux.git/log/?h=linux-3.13.y-queue

This patch is scheduled to be released in version 3.13.11-ckt22.

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.13.y-ckt tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Kamal

------

>From 227421c0a15e3561dcd9b8ea0fc2ef126fca490c Mon Sep 17 00:00:00 2001
From: Boris Ostrovsky <boris.ostrovsky at oracle.com>
Date: Wed, 29 Apr 2015 17:10:15 -0400
Subject: xen/events: Set irq_info->evtchn before binding the channel to CPU in
 __startup_pirq()

commit 16e6bd5970c88a2ac018b84a5f1dd5c2ff1fdf2c upstream.

.. because bind_evtchn_to_cpu(evtchn, cpu) will map evtchn to
'info' and pass 'info' down to xen_evtchn_port_bind_to_cpu().

Signed-off-by: Boris Ostrovsky <boris.ostrovsky at oracle.com>
Tested-by: Annie Li <annie.li at oracle.com>
Signed-off-by: David Vrabel <david.vrabel at citrix.com>
[ kamal: backport to 3.13-stable: applied to drivers/xen/events.c; context ]
Signed-off-by: Kamal Mostafa <kamal at canonical.com>
---
 drivers/xen/events.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/xen/events.c b/drivers/xen/events.c
index 4035e83..83d5d42 100644
--- a/drivers/xen/events.c
+++ b/drivers/xen/events.c
@@ -611,8 +611,8 @@ static unsigned int __startup_pirq(unsigned int irq)
 	pirq_query_unmask(irq);

 	evtchn_to_irq[evtchn] = irq;
-	bind_evtchn_to_cpu(evtchn, 0);
 	info->evtchn = evtchn;
+	bind_evtchn_to_cpu(evtchn, 0);

 out:
 	unmask_evtchn(evtchn);
--
1.9.1