Re: [PATCH v4 11/13] acpi: simplify build_isa_devices_aml()

[Igor Mammedov <imammedo@redhat.com>]

On Tue,  5 May 2020 13:38:41 +0200
Gerd Hoffmann <kraxel@redhat.com> wrote:

> x86 machines can have a single ISA bus only.
> 
> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

Reviewed-by: Igor Mammedov <imammedo@redhat.com>

> ---
>  hw/i386/acpi-build.c | 15 +++++----------
>  1 file changed, 5 insertions(+), 10 deletions(-)
> 
> diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c
> index cb3913d2ee76..1922868f3401 100644
> --- a/hw/i386/acpi-build.c
> +++ b/hw/i386/acpi-build.c
> @@ -1061,19 +1061,14 @@ static void build_hpet_aml(Aml *table)
>  static void build_isa_devices_aml(Aml *table)
>  {
>      bool ambiguous;
> -
> -    Aml *scope = aml_scope("_SB.PCI0.ISA");
>      Object *obj = object_resolve_path_type("", TYPE_ISA_BUS, &ambiguous);
> +    Aml *scope;
>  
> -    if (ambiguous) {
> -        error_report("Multiple ISA busses, unable to define IPMI ACPI data");
> -    } else if (!obj) {
> -        error_report("No ISA bus, unable to define IPMI ACPI data");
> -    } else {
> -        build_acpi_ipmi_devices(scope, BUS(obj), "\\_SB.PCI0.ISA");
> -        isa_build_aml(ISA_BUS(obj), scope);
> -    }
> +    assert(obj && !ambiguous);
>  
> +    scope = aml_scope("_SB.PCI0.ISA");
> +    build_acpi_ipmi_devices(scope, BUS(obj), "\\_SB.PCI0.ISA");
> +    isa_build_aml(ISA_BUS(obj), scope);
>      aml_append(table, scope);
>  }
>