Re: [PATCH] hw/i386/ich9: add comment explaining an argument to acpi_pcihp_reset call

[Michael S. Tsirkin]

On Tue, Jul 27, 2021 at 10:15:46AM +0530, Ani Sinha wrote:
> acpi_pcihp_reset() call from ich9/pm_reset() passes an unconditional truth 
> value
> as the second argument. Added a commnet here to explain the reason why the
> argument is being passed unconditionally.
> 
> Signed-off-by: Ani Sinha <ani@anisinha.ca>
> ---
>  hw/acpi/ich9.c | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/hw/acpi/ich9.c b/hw/acpi/ich9.c
> index 778e27b659..b2e3c46075 100644
> --- a/hw/acpi/ich9.c
> +++ b/hw/acpi/ich9.c
> @@ -281,6 +281,11 @@ static void pm_reset(void *opaque)
>      pm->smi_en_wmask = ~0;
>  
>      if (pm->use_acpi_hotplug_bridge) {
> +        /*
> +         * PCI Express root buses do not support hot-plug, for
> +         * details see docs/pcie.txt. Hence, the second argument
> +         * is unconditionally true.
> +         */
>          acpi_pcihp_reset(&pm->acpi_pci_hotplug, true);
>      }


I don't see this comment as especially elluminating, sorry.

>  
> -- 
> 2.25.1