From: Ian Campbell <ian.campbell@citrix.com>
Date: Thu, 10 Mar 2011 16:08:03 +0000 (+0000)
Subject: xen: events: fix xen_map_pirq_gsi error return
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=a0e181167ee4254988c8c89d26ffd8ef4cb7deb0;p=deliverable%2Flinux.git

xen: events: fix xen_map_pirq_gsi error return

Fix initial value of irq so that first goto out (if pirq or gsi
arguments are too large) actually returns an error.

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
---

diff --git a/drivers/xen/events.c b/drivers/xen/events.c
index 0b27080b1918..a9c154d1d2ff 100644
--- a/drivers/xen/events.c
+++ b/drivers/xen/events.c
@@ -592,7 +592,7 @@ int xen_allocate_pirq(unsigned gsi, int shareable, char *name)
  */
 int xen_map_pirq_gsi(unsigned pirq, unsigned gsi, int shareable, char *name)
 {
-	int irq = 0;
+	int irq = -1;
 	struct physdev_irq irq_op;
 
 	spin_lock(&irq_mapping_update_lock);