spapr: Fix return value of vga initialization
Before spapr_vga_init will returned false if the vga is specified by
the command '-device VGA' because vga_interface_type was evaluated to
VGA_NONE. With the change in previous patch of this series,
spapr_vga_init should return true if it's told that the vga will be
initialized in flow of the generic devices initialization.
To keep '-nodefaults' have the semantics of bare minimum, it adds a
check of 'has_defaults' in usb_enabled() to avoid that a USB controller
is added by '-nodefautls, -device VGA' implicitly.
This patch also makes two cleanups:
1. skip initialization for VGA_NONE
2. remove the useless 'break'
Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Mark Wu <wudxw@linux.vnet.ibm.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
index bf46c38..5c9a154 100644
--- a/hw/ppc/spapr.c
+++ b/hw/ppc/spapr.c
@@ -781,13 +781,15 @@
{
switch (vga_interface_type) {
case VGA_NONE:
+ return false;
+ case VGA_DEVICE:
+ return true;
case VGA_STD:
return pci_vga_init(pci_bus) != NULL;
default:
fprintf(stderr, "This vga model is not supported,"
"currently it only supports -vga std\n");
exit(0);
- break;
}
}
diff --git a/vl.c b/vl.c
index 98f6460..842e897 100644
--- a/vl.c
+++ b/vl.c
@@ -974,7 +974,8 @@
bool usb_enabled(bool default_usb)
{
- return qemu_opt_get_bool(qemu_get_machine_opts(), "usb", default_usb);
+ return qemu_opt_get_bool(qemu_get_machine_opts(), "usb",
+ has_defaults && default_usb);
}
#ifndef _WIN32
