vfio: Pass an error object to vfio_get_group

Pass an error object to prepare for migration to VFIO-PCI realize.

For the time being let's just simply report the error in
vfio platform's vfio_base_device_init(). A subsequent patch will
duly propagate the error up to vfio_platform_realize.

Signed-off-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>

1 files changed, 8 insertions, 3 deletions

diff --git a/hw/vfio/platform.c b/hw/vfio/platform.c
index a559e7b659..7bf525b918 100644
--- a/hw/vfio/platform.c
+++ b/hw/vfio/platform.c
@@ -552,6 +552,7 @@ static int vfio_base_device_init(VFIODevice *vbasedev)
     ssize_t len;
     struct stat st;
     int groupid;
+    Error *err = NULL;
     int ret;
 
     /* @sysfsdev takes precedence over @host */
@@ -592,10 +593,10 @@ static int vfio_base_device_init(VFIODevice *vbasedev)
 
     trace_vfio_platform_base_device_init(vbasedev->name, groupid);
 
-    group = vfio_get_group(groupid, &address_space_memory);
+    group = vfio_get_group(groupid, &address_space_memory, &err);
     if (!group) {
-        error_report("vfio: failed to get group %d", groupid);
-        return -ENOENT;
+        ret = -ENOENT;
+        goto error;
     }
 
     QLIST_FOREACH(vbasedev_iter, &group->device_list, next) {
@@ -619,6 +620,10 @@ static int vfio_base_device_init(VFIODevice *vbasedev)
         vfio_put_group(group);
     }
 
+error:
+    if (err) {
+        error_reportf_err(err, ERR_PREFIX, vbasedev->name);
+    }
     return ret;
 }