hw/ppc: modified the condition for usb controllers to be created for some ppc machines

Some ppc machines create a default usb controller based on a 'machine condition'.
Until now the logic was: create the usb controller if:
 -  the usb option was supplied in cli and value is true or
 -  the usb option was absent and both set_defaults and the machine
    condition were true.

Modified the logic to:
Create the usb controller if:
 - the machine condition is true and defaults are enabled or
 - the usb option is supplied and true.

The main for this is to simplify the usb_enabled method.

Signed-off-by: Marcel Apfelbaum <marcel@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Alexander Graf <agraf@suse.de>

1 files changed, 1 insertions, 1 deletions

diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
index 2850624942..2b2cc0cfc7 100644
--- a/hw/ppc/spapr.c
+++ b/hw/ppc/spapr.c
@@ -1530,7 +1530,7 @@ static void ppc_spapr_init(MachineState *machine)
         spapr->has_graphics = true;
     }
 
-    if (usb_enabled(spapr->has_graphics)) {
+    if ((spapr->has_graphics && defaults_enabled()) || usb_enabled(false)) {
         pci_create_simple(phb->bus, -1, "pci-ohci");
         if (spapr->has_graphics) {
             usbdevice_create("keyboard");