linux-kernel - Re: [PATCH v1 1/1] platform/x86: intel/pmc: Switch to use acpi_evaluate_dsm

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Message-ID: <CAE2upjSJ6CuNkpga1ThnDCmVHLSq30zN3A+UR89+nAkrhOaW5g@mail.gmail.com>
Date:   Wed, 18 Jan 2023 15:15:40 -0500
From:   Rajneesh Bhardwaj <irenic.rajneesh@...il.com>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc:     Hans de Goede <hdegoede@...hat.com>,
        "David E. Box" <david.e.box@...ux.intel.com>,
        Gayatri Kammela <gayatri.kammela@...ux.intel.com>,
        platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org,
        David E Box <david.e.box@...el.com>,
        Mark Gross <markgross@...nel.org>
Subject: Re: [PATCH v1 1/1] platform/x86: intel/pmc: Switch to use acpi_evaluate_dsm_typed()

Looks good.
Reviewed-by : Rajneesh Bhardwaj <irenic.rajneesh@...il.com>


On Wed, Jan 18, 2023 at 4:54 AM Andy Shevchenko
<andriy.shevchenko@...ux.intel.com> wrote:
>
> The acpi_evaluate_dsm_typed() provides a way to check the type of the
> object evaluated by _DSM call. Use it instead of open coded variant.
>
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
> ---
>  drivers/platform/x86/intel/pmc/tgl.c | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/platform/x86/intel/pmc/tgl.c b/drivers/platform/x86/intel/pmc/tgl.c
> index e3e50538465d..c245ada849d0 100644
> --- a/drivers/platform/x86/intel/pmc/tgl.c
> +++ b/drivers/platform/x86/intel/pmc/tgl.c
> @@ -221,9 +221,9 @@ void pmc_core_get_tgl_lpm_reqs(struct platform_device *pdev)
>
>         guid_parse(ACPI_S0IX_DSM_UUID, &s0ix_dsm_guid);
>
> -       out_obj = acpi_evaluate_dsm(adev->handle, &s0ix_dsm_guid, 0,
> -                                   ACPI_GET_LOW_MODE_REGISTERS, NULL);
> -       if (out_obj && out_obj->type == ACPI_TYPE_BUFFER) {
> +       out_obj = acpi_evaluate_dsm_typed(adev->handle, &s0ix_dsm_guid, 0,
> +                                         ACPI_GET_LOW_MODE_REGISTERS, NULL, ACPI_TYPE_BUFFER);
> +       if (out_obj) {
>                 u32 size = out_obj->buffer.length;
>
>                 if (size != lpm_size) {
> --
> 2.39.0
>


-- 
Thanks,
Rajneesh