linux-kernel - Re: [PATCH] ACPI / APEI: Add is_ghes

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Date:   Mon, 25 Jan 2021 17:41:04 +0100
From:   "Rafael J. Wysocki" <rafael@...nel.org>
To:     Terry Bowman <terry.bowman@....com>,
        Borislav Petkov <bp@...en8.de>,
        James Morse <james.morse@....com>
Cc:     "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Len Brown <lenb@...nel.org>, Tony Luck <tony.luck@...el.com>,
        Yazen Ghannam <yazen.ghannam@....com>,
        Hanjun Guo <guohanjun@...wei.com>,
        Colin Ian King <colin.king@...onical.com>,
        ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        jon.grimm@....com
Subject: Re: [PATCH] ACPI / APEI: Add is_ghes_type() to identify GHES sources

On Fri, Jan 22, 2021 at 7:05 PM Terry Bowman <terry.bowman@....com> wrote:
>
> From: Yazen Ghannam <yazen.ghannam@....com>
>
> Refactor duplicated GHES identity logic into is_ghes_type().
>
> Signed-off-by: Yazen Ghannam <yazen.ghannam@....com>
> Reviewed-by: Robert Richter <rrichter@....com>
> Signed-off-by: Terry Bowman <terry.bowman@....com>

If Terry was a co-author of the patch, please add a Co-developed-by:
tag for him in addition to the s-o-b.  Otherwise the meaning of his
s-o-b is unclear.

Boris, James, any objections to the changes below?

> ---
>  drivers/acpi/apei/hest.c | 12 ++++++++----
>  1 file changed, 8 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/acpi/apei/hest.c b/drivers/acpi/apei/hest.c
> index 6e980fe16772..bd702e0ef339 100644
> --- a/drivers/acpi/apei/hest.c
> +++ b/drivers/acpi/apei/hest.c
> @@ -49,6 +49,12 @@ static const int hest_esrc_len_tab[ACPI_HEST_TYPE_RESERVED] = {
>         [ACPI_HEST_TYPE_IA32_DEFERRED_CHECK] = -1,
>  };
>
> +static inline bool is_ghes_type(struct acpi_hest_header *hest_hdr)
> +{
> +       return hest_hdr->type == ACPI_HEST_TYPE_GENERIC_ERROR ||
> +              hest_hdr->type == ACPI_HEST_TYPE_GENERIC_ERROR_V2;
> +}
> +
>  static int hest_esrc_len(struct acpi_hest_header *hest_hdr)
>  {
>         u16 hest_type = hest_hdr->type;
> @@ -141,8 +147,7 @@ static int __init hest_parse_ghes_count(struct acpi_hest_header *hest_hdr, void
>  {
>         int *count = data;
>
> -       if (hest_hdr->type == ACPI_HEST_TYPE_GENERIC_ERROR ||
> -           hest_hdr->type == ACPI_HEST_TYPE_GENERIC_ERROR_V2)
> +       if (is_ghes_type(hest_hdr))
>                 (*count)++;
>         return 0;
>  }
> @@ -153,8 +158,7 @@ static int __init hest_parse_ghes(struct acpi_hest_header *hest_hdr, void *data)
>         struct ghes_arr *ghes_arr = data;
>         int rc, i;
>
> -       if (hest_hdr->type != ACPI_HEST_TYPE_GENERIC_ERROR &&
> -           hest_hdr->type != ACPI_HEST_TYPE_GENERIC_ERROR_V2)
> +       if (!is_ghes_type(hest_hdr))
>                 return 0;
>
>         if (!((struct acpi_hest_generic *)hest_hdr)->enabled)
> --
> 2.27.0
>