Re: [PATCH] i386:acpi: Remove _HID from the SMBus ACPI entry

[Igor Mammedov <imammedo@redhat.com>]

On Mon,  6 Jan 2020 09:27:05 -0600
minyard@acm.org wrote:

> From: Corey Minyard <cminyard@mvista.com>
> 
> Per the ACPI spec (version 6.1, section 6.1.5 _HID) it is not required
> on enumerated buses (like PCI in this case), _ADR is required (and is
> already there).  And the _HID value is wrong.  Linux appears to ignore
> the _HID entry, but it confuses Windows.
> 
> Signed-off-by: Corey Minyard <cminyard@mvista.com>
> Cc: Michael S. Tsirkin <mst@redhat.com>
> Cc: Igor Mammedov <imammedo@redhat.com>

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

> ---
>  hw/i386/acpi-build.c | 1 -
>  1 file changed, 1 deletion(-)
> 
> diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c
> index 7b8da62d41..ab73a8f4c8 100644
> --- a/hw/i386/acpi-build.c
> +++ b/hw/i386/acpi-build.c
> @@ -1815,7 +1815,6 @@ static void build_smb0(Aml *table, I2CBus *smbus, int devnr, int func)
>      Aml *scope = aml_scope("_SB.PCI0");
>      Aml *dev = aml_device("SMB0");
>  
> -    aml_append(dev, aml_name_decl("_HID", aml_eisaid("APP0005")));
>      aml_append(dev, aml_name_decl("_ADR", aml_int(devnr << 16 | func)));
>      build_acpi_ipmi_devices(dev, BUS(smbus), "\\_SB.PCI0.SMB0");
>      aml_append(scope, dev);