From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Date: Thu, 19 Mar 2015 00:24:10 +0000 (-0400)
Subject: libxc: xc_physdev_map return -1 and populate errno.
X-Git-Tag: archive/raspbian/4.8.0-1+rpi1~1^2~3556
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=479dab849873830184e3b53a903a3d3246b48e1a;p=xen.git

libxc: xc_physdev_map return -1 and populate errno.

The users of these (qemu) check for a negative value
so we are safe in regards to that. However they
also use the return value to inform the user of the
error.

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

diff --git a/tools/libxc/xc_physdev.c b/tools/libxc/xc_physdev.c
index cf02d85e6d..9b064b8787 100644
--- a/tools/libxc/xc_physdev.c
+++ b/tools/libxc/xc_physdev.c
@@ -43,8 +43,10 @@ int xc_physdev_map_pirq(xc_interface *xch,
     struct physdev_map_pirq map;
 
     if ( !pirq )
-        return -EINVAL;
-
+    {
+        errno = EINVAL;
+        return -1;
+    }
     memset(&map, 0, sizeof(struct physdev_map_pirq));
     map.domid = domid;
     map.type = MAP_PIRQ_TYPE_GSI;
@@ -72,8 +74,10 @@ int xc_physdev_map_pirq_msi(xc_interface *xch,
     struct physdev_map_pirq map;
 
     if ( !pirq )
-        return -EINVAL;
-
+    {
+        errno = EINVAL;
+        return -1;
+    }
     memset(&map, 0, sizeof(struct physdev_map_pirq));
     map.domid = domid;
     map.type = MAP_PIRQ_TYPE_MSI;