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-rw-r--r--hw/ppc/mac_newworld.c3
-rw-r--r--hw/ppc/spapr.c2
-rw-r--r--include/sysemu/sysemu.h1
-rw-r--r--vl.c7
4 files changed, 10 insertions, 3 deletions
diff --git a/hw/ppc/mac_newworld.c b/hw/ppc/mac_newworld.c
index b60a832c0a..8ba9499695 100644
--- a/hw/ppc/mac_newworld.c
+++ b/hw/ppc/mac_newworld.c
@@ -417,7 +417,8 @@ static void ppc_core99_init(MachineState *machine)
     dev = qdev_create(adb_bus, TYPE_ADB_MOUSE);
     qdev_init_nofail(dev);
 
-    if (usb_enabled(machine_arch == ARCH_MAC99_U3)) {
+    if ((machine_arch == ARCH_MAC99_U3 && defaults_enabled()) ||
+        usb_enabled(false)) {
         pci_create_simple(pci_bus, -1, "pci-ohci");
         /* U3 needs to use USB for input because Linux doesn't support via-cuda
         on PPC64 */
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");
diff --git a/include/sysemu/sysemu.h b/include/sysemu/sysemu.h
index 503e5a48a7..a31044c271 100644
--- a/include/sysemu/sysemu.h
+++ b/include/sysemu/sysemu.h
@@ -227,6 +227,7 @@ void qemu_boot_set(const char *boot_order, Error **errp);
 
 QemuOpts *qemu_get_machine_opts(void);
 
+bool defaults_enabled(void);
 bool usb_enabled(bool default_usb);
 
 extern QemuOptsList qemu_legacy_drive_opts;
diff --git a/vl.c b/vl.c
index bea9656232..415535fb46 100644
--- a/vl.c
+++ b/vl.c
@@ -997,10 +997,15 @@ static int parse_name(QemuOpts *opts, void *opaque)
     return 0;
 }
 
+bool defaults_enabled(void)
+{
+    return has_defaults;
+}
+
 bool usb_enabled(bool default_usb)
 {
     return qemu_opt_get_bool(qemu_get_machine_opts(), "usb",
-                             has_defaults && default_usb);
+                             default_usb);
 }
 
 #ifndef _WIN32