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hw/serial: don't create a char device if none is specified

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When creating null devices, there is no way to ensure the unicity of
the labels. Bail out with an error message instead.

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
This commit is contained in:
Aurelien Jarno 2009-09-15 01:16:28 +02:00
parent e09fdfaf32
commit 387f4a5a71
1 changed files with 6 additions and 1 deletions
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7
hw/serial.c
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@ -712,9 +712,14 @@ static void serial_reset(void *opaque)
static void serial_init_core(SerialState *s, qemu_irq irq, int baudbase, static void serial_init_core(SerialState *s, qemu_irq irq, int baudbase,
CharDriverState *chr) CharDriverState *chr)
{ {
if (!chr) {
fprintf(stderr, "Can't create serial device, empty char device\n");
exit(1);
}
s->irq = irq; s->irq = irq;
s->baudbase = baudbase; s->baudbase = baudbase;
s->chr = chr ?: qemu_chr_open("null", "null", NULL); s->chr = chr;
s->modem_status_poll = qemu_new_timer(vm_clock, (QEMUTimerCB *) serial_update_msl, s); s->modem_status_poll = qemu_new_timer(vm_clock, (QEMUTimerCB *) serial_update_msl, s);