static void rng_egd_opened(RngBackend *b, Error **errp) { RngEgd *s = RNG_EGD(b); if (s->chr_name == NULL) { error_set(errp, QERR_INVALID_PARAMETER_VALUE, "chardev", "a valid character device"); s->chr = qemu_chr_find(s->chr_name); if (s->chr == NULL) { error_set(errp, QERR_DEVICE_NOT_FOUND, s->chr_name); /* FIXME we should resubmit pending requests when the CDS reconnects. */ qemu_chr_add_handlers(s->chr, rng_egd_chr_can_read, rng_egd_chr_read, NULL, s);