Re: [PATCH v4 04/12] hw/i386/q35: Realize LPC PCI function before accessing it

[BALATON Zoltan]

On Tue, 13 Feb 2024, Philippe Mathieu-Daudé wrote:
> We should not wire IRQs on unrealized device.
>
> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>

Reviewed-by: BALATON Zoltan <balaton@eik.bme.hu>

> ---
> hw/i386/pc_q35.c | 6 +++---
> 1 file changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/hw/i386/pc_q35.c b/hw/i386/pc_q35.c
> index 7ca3f465e0..b7c69d55d6 100644
> --- a/hw/i386/pc_q35.c
> +++ b/hw/i386/pc_q35.c
> @@ -248,13 +248,13 @@ static void pc_q35_init(MachineState *machine)
>     /* create ISA bus */
>     lpc = pci_new_multifunction(PCI_DEVFN(ICH9_LPC_DEV, ICH9_LPC_FUNC),
>                                 TYPE_ICH9_LPC_DEVICE);
> -    qdev_prop_set_bit(DEVICE(lpc), "smm-enabled",
> -                      x86_machine_is_smm_enabled(x86ms));
>     lpc_dev = DEVICE(lpc);
> +    qdev_prop_set_bit(lpc_dev, "smm-enabled",
> +                      x86_machine_is_smm_enabled(x86ms));
> +    pci_realize_and_unref(lpc, host_bus, &error_fatal);
>     for (i = 0; i < IOAPIC_NUM_PINS; i++) {
>         qdev_connect_gpio_out_named(lpc_dev, ICH9_GPIO_GSI, i, x86ms->gsi[i]);
>     }
> -    pci_realize_and_unref(lpc, host_bus, &error_fatal);
>
>     rtc_state = ISA_DEVICE(object_resolve_path_component(OBJECT(lpc), "rtc"));