Only when all other hub port's *peer* .can_receive() all return 1,
the source hub port .can_receive() return 1.
Reviewed-by: NPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: NZhi Yong Wu <wuzhy@linux.vnet.ibm.com>
Signed-off-by: NStefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Reviewed-by: NLaszlo Ersek <lersek@redhat.com>