Jan Beulich
2012-Sep-25 08:54 UTC
[PATCH] linux-2.6.18/PCI: suppress bogus warning on old hypervisors
pci_bus_remove_wrapper() warned even for the -ENOSYS case. By detecting
the missing support early (in pci_bus_probe_wrapper()) we can avoid
this by removing the hooks altogether in this case.
Signed-off-by: Jan Beulich <jbeulich@suse.com>
--- a/drivers/xen/core/pci.c
+++ b/drivers/xen/core/pci.c
@@ -45,8 +45,21 @@ static int pci_bus_probe_wrapper(struct
r = HYPERVISOR_physdev_op(PHYSDEVOP_manage_pci_add,
&manage_pci);
}
- if (r && r != -ENOSYS)
+
+ switch (r) {
+ case 0:
+ break;
+#if CONFIG_XEN_COMPAT < 0x030300
+ case -ENOSYS:
+ if (!manage_pci_ext.is_virtfn && !manage_pci_ext.is_extfn) {
+ pci_bus_type.probe = pci_bus_probe;
+ pci_bus_type.remove = pci_bus_remove;
+ }
+ break;
+#endif
+ default:
return r;
+ }
r = pci_bus_probe(dev);
return r;
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