[Qemu-devel] [PATCH RFC v1 1/2] xen/hw/passthrough: Use errno instead of ret for xc_physdev_map_* calls

[Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>]

As the libxc library follows (mostly) the return negative
for failure and stashes the error value in errno.

Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
---
 hw/xen/xen_pt.c     | 4 ++--
 hw/xen/xen_pt_msi.c | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/hw/xen/xen_pt.c b/hw/xen/xen_pt.c
index c1bf357..d2c187d 100644
--- a/hw/xen/xen_pt.c
+++ b/hw/xen/xen_pt.c
@@ -691,8 +691,8 @@ static int xen_pt_initfn(PCIDevice *d)
     rc = xc_physdev_map_pirq(xen_xc, xen_domid, machine_irq, &pirq);
 
     if (rc < 0) {
-        XEN_PT_ERR(d, "Mapping machine irq %u to pirq %i failed, (rc: %d)\n",
-                   machine_irq, pirq, rc);
+        XEN_PT_ERR(d, "Mapping machine irq %u to pirq %i failed, (err: %d)\n",
+                   machine_irq, pirq, errno);
 
         /* Disable PCI intx assertion (turn on bit10 of devctl) */
         xen_host_pci_set_word(&s->real_device,
diff --git a/hw/xen/xen_pt_msi.c b/hw/xen/xen_pt_msi.c
index 9ed9321..b01921a 100644
--- a/hw/xen/xen_pt_msi.c
+++ b/hw/xen/xen_pt_msi.c
@@ -132,8 +132,8 @@ static int msi_msix_setup(XenPCIPassthroughState *s,
                                      msix_entry, table_base);
         if (rc) {
             XEN_PT_ERR(&s->dev,
-                       "Mapping of MSI%s (rc: %i, vec: %#x, entry %#x)\n",
-                       is_msix ? "-X" : "", rc, gvec, msix_entry);
+                       "Mapping of MSI%s (err: %i, vec: %#x, entry %#x)\n",
+                       is_msix ? "-X" : "", errno, gvec, msix_entry);
             return rc;
         }
     }
-- 
2.1.0