linux-kernel - Re: [PATCH] ACPI / tables: Return error from table parse handler

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Date:	Thu, 19 May 2016 23:17:58 +0200
From:	"Rafael J. Wysocki" <rafael@...nel.org>
To:	Matthias Brugger <mbrugger@...e.com>
Cc:	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Len Brown <lenb@...nel.org>,
	ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] ACPI / tables: Return error from table parse handler

On Thu, May 19, 2016 at 6:51 PM, Matthias Brugger <mbrugger@...e.com> wrote:
> The handler called in acpi_table_parse may return an error.
> This patch returns this error instead of ignoring it.

And does it address any particular practical problem or is it just a
code cleanup?

> Signed-off-by: Matthias Brugger <mbrugger@...e.com>
> ---
>  drivers/acpi/tables.c | 5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/acpi/tables.c b/drivers/acpi/tables.c
> index a372f9e..fb5cd80 100644
> --- a/drivers/acpi/tables.c
> +++ b/drivers/acpi/tables.c
> @@ -394,6 +394,7 @@ int __init acpi_table_parse(char *id, acpi_tbl_table_handler handler)
>  {
>         struct acpi_table_header *table = NULL;
>         acpi_size tbl_size;
> +       int ret;
>
>         if (acpi_disabled)
>                 return -ENODEV;
> @@ -407,9 +408,9 @@ int __init acpi_table_parse(char *id, acpi_tbl_table_handler handler)
>                 acpi_get_table_with_size(id, 0, &table, &tbl_size);
>
>         if (table) {
> -               handler(table);
> +               ret = handler(table);
>                 early_acpi_os_unmap_memory(table, tbl_size);
> -               return 0;
> +               return ret;
>         } else
>                 return -ENODEV;
>  }
> --