From 7237011d0596e57f42d2a4e0556034b8d13533fe Mon Sep 17 00:00:00 2001
From: Eric Auger <eric.auger@redhat.com>
Date: Mon, 17 Oct 2016 10:57:59 -0600
Subject: [PATCH] vfio/pci: Pass an error object to vfio_pci_igd_opregion_init

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

In vfio_probe_igd_bar4_quirk, simply report the error.

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>
---
 hw/vfio/pci-quirks.c | 10 +++++-----
 hw/vfio/pci.c        |  3 +--
 hw/vfio/pci.h        |  3 ++-
 3 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/hw/vfio/pci-quirks.c b/hw/vfio/pci-quirks.c
index 806ea5d21a..2cbda0844e 100644
--- a/hw/vfio/pci-quirks.c
+++ b/hw/vfio/pci-quirks.c
@@ -1056,7 +1056,7 @@ typedef struct VFIOIGDQuirk {
  * of the IGD device.
  */
 int vfio_pci_igd_opregion_init(VFIOPCIDevice *vdev,
-                               struct vfio_region_info *info)
+                               struct vfio_region_info *info, Error **errp)
 {
     int ret;
 
@@ -1064,7 +1064,7 @@ int vfio_pci_igd_opregion_init(VFIOPCIDevice *vdev,
     ret = pread(vdev->vbasedev.fd, vdev->igd_opregion,
                 info->size, info->offset);
     if (ret != info->size) {
-        error_report("vfio: Error reading IGD OpRegion");
+        error_setg(errp, "failed to read IGD OpRegion");
         g_free(vdev->igd_opregion);
         vdev->igd_opregion = NULL;
         return -EINVAL;
@@ -1489,10 +1489,10 @@ static void vfio_probe_igd_bar4_quirk(VFIOPCIDevice *vdev, int nr)
     }
 
     /* Setup OpRegion access */
-    ret = vfio_pci_igd_opregion_init(vdev, opregion);
+    ret = vfio_pci_igd_opregion_init(vdev, opregion, &err);
     if (ret) {
-        error_report("IGD device %s failed to setup OpRegion, "
-                     "legacy mode disabled", vdev->vbasedev.name);
+        error_append_hint(&err, "IGD legacy mode disabled\n");
+        error_reportf_err(err, ERR_PREFIX, vdev->vbasedev.name);
         goto out;
     }
 
diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c
index e2cf6acb6a..3d84126e87 100644
--- a/hw/vfio/pci.c
+++ b/hw/vfio/pci.c
@@ -2721,10 +2721,9 @@ static int vfio_initfn(PCIDevice *pdev)
             goto out_teardown;
         }
 
-        ret = vfio_pci_igd_opregion_init(vdev, opregion);
+        ret = vfio_pci_igd_opregion_init(vdev, opregion, &err);
         g_free(opregion);
         if (ret) {
-            error_setg_errno(&err, -ret, "IGD OpRegion initialization failed");
             goto out_teardown;
         }
     }
diff --git a/hw/vfio/pci.h b/hw/vfio/pci.h
index 87a62f921a..a8366bb2a7 100644
--- a/hw/vfio/pci.h
+++ b/hw/vfio/pci.h
@@ -164,6 +164,7 @@ void vfio_setup_resetfn_quirk(VFIOPCIDevice *vdev);
 int vfio_populate_vga(VFIOPCIDevice *vdev, Error **errp);
 
 int vfio_pci_igd_opregion_init(VFIOPCIDevice *vdev,
-                               struct vfio_region_info *info);
+                               struct vfio_region_info *info,
+                               Error **errp);
 
 #endif /* HW_VFIO_VFIO_PCI_H */