Re: [PATCH v2 04/15] hw/isa/vt82c686: Define a GPIO line between vt82c686 and i8259

[BALATON Zoltan <balaton@eik.bme.hu>]

On Thu, 27 Jun 2024, Akihiko Odaki wrote:
> This fixes qemu_irq array leak.
>
> Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
> ---
> hw/isa/vt82c686.c | 7 ++++---
> 1 file changed, 4 insertions(+), 3 deletions(-)
>
> diff --git a/hw/isa/vt82c686.c b/hw/isa/vt82c686.c
> index 8582ac0322eb..629d2d568137 100644
> --- a/hw/isa/vt82c686.c
> +++ b/hw/isa/vt82c686.c
> @@ -715,13 +715,14 @@ static void via_isa_realize(PCIDevice *d, Error **errp)
>     ViaISAState *s = VIA_ISA(d);
>     DeviceState *dev = DEVICE(d);
>     PCIBus *pci_bus = pci_get_bus(d);
> -    qemu_irq *isa_irq;
> +    qemu_irq isa_irq;
>     ISABus *isa_bus;
>     int i;
>
>     qdev_init_gpio_out(dev, &s->cpu_intr, 1);
>     qdev_init_gpio_in_named(dev, via_isa_pirq, "pirq", PCI_NUM_PINS);
> -    isa_irq = qemu_allocate_irqs(via_isa_request_i8259_irq, s, 1);
> +    qdev_init_gpio_in_named(dev, via_isa_request_i8259_irq, "i8259", 1);

The chip has no such pin so this is a QEMU internal connection that I 
think should not be modelled with a named gpio. I think we really need a 
function to init a qemu_irq (for now we only have one that also allocares 
it) so then we can put this in ViaISAState and init in place. I'll make a 
patch.

Regards,
BALATON Zoltan

> +    isa_irq = qdev_get_gpio_in_named(dev, "i8259", 0);
>     isa_bus = isa_bus_new(dev, pci_address_space(d), pci_address_space_io(d),
>                           errp);
>
> @@ -729,7 +730,7 @@ static void via_isa_realize(PCIDevice *d, Error **errp)
>         return;
>     }
>
> -    s->isa_irqs_in = i8259_init(isa_bus, *isa_irq);
> +    s->isa_irqs_in = i8259_init(isa_bus, isa_irq);
>     isa_bus_register_input_irqs(isa_bus, s->isa_irqs_in);
>     i8254_pit_init(isa_bus, 0x40, 0, NULL);
>     i8257_dma_init(OBJECT(d), isa_bus, 0);
>
>