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hw/pci-host/prep: Do not use hw_error() in realize function

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hw_error() is for CPU related errors only (it prints out a
register dump and calls abort()), so we should not use it
if we just failed to load the bios image. Apart from that,
realize() functions should not exit directly but always set
the errp with error_setg() in case of errors instead.
Additionally, move some code around and delete the bios memory
subregion again in case of such an error, so that we leave a
clean state when returning to the caller.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Hervé Poussineau <hpoussin@reactos.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Thomas Huth 2017-02-09 12:14:41 +01:00 committed by David Gibson
parent 5065908361
commit fb38ebfbfe
1 changed files with 7 additions and 6 deletions
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13
hw/pci-host/prep.c
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@ -309,7 +309,6 @@ static void raven_realize(PCIDevice *d, Error **errp)
memory_region_set_readonly(&s->bios, true);
memory_region_add_subregion(get_system_memory(), (uint32_t)(-BIOS_SIZE),
&s->bios);
vmstate_register_ram_global(&s->bios);
if (s->bios_name) {
filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, s->bios_name);
if (filename) {
@ -328,12 +327,15 @@ static void raven_realize(PCIDevice *d, Error **errp)
}
}
}
if (bios_size < 0 || bios_size > BIOS_SIZE) {
/* FIXME should error_setg() */
hw_error("qemu: could not load bios image '%s'\n", s->bios_name);
}
g_free(filename);
if (bios_size < 0 || bios_size > BIOS_SIZE) {
memory_region_del_subregion(get_system_memory(), &s->bios);
error_setg(errp, "Could not load bios image '%s'", s->bios_name);
return;
}
}
vmstate_register_ram_global(&s->bios);
}
static const VMStateDescription vmstate_raven = {
@ -361,7 +363,6 @@ static void raven_class_init(ObjectClass *klass, void *data)
/*
* Reason: PCI-facing part of the host bridge, not usable without
* the host-facing part, which can't be device_add'ed, yet.
* Reason: realize() method uses hw_error().
*/
dc->cannot_instantiate_with_device_add_yet = true;
}