Ensure that the value is valid; it can only be zero or one. And never create a floppy disk controller if it is zero.
Signed-off-by: Paolo Bonzini <pbonz...@redhat.com> --- hw/isa/isa-superio.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/hw/isa/isa-superio.c b/hw/isa/isa-superio.c index 80e0c34652e..34df335598c 100644 --- a/hw/isa/isa-superio.c +++ b/hw/isa/isa-superio.c @@ -116,7 +116,9 @@ static void isa_superio_realize(DeviceState *dev, Error **errp) } /* Floppy disc */ - if (!k->floppy.is_enabled || k->floppy.is_enabled(sio, 0)) { + assert(k->floppy.count <= 1); + if (k->floppy.count && + (!k->floppy.is_enabled || k->floppy.is_enabled(sio, 0))) { isa = isa_new(TYPE_ISA_FDC); d = DEVICE(isa); if (k->floppy.get_iobase) { -- 2.43.0