On Fri, 2013-08-02 at 17:14 +0800, Tang Chen wrote:
> In acpi_initrd_override(), it checks several things to ensure the
> table it found is valid. In later patches, we need to do these check
> somewhere else. So this patch introduces a common function
> acpi_verify_initrd() to do all these checks, and reuse it in different
Typo: acpi_verify_initrd() -> acpi_verify_table()
-Toshi
> places. The function will be used in the subsequent patches.
>
> Signed-off-by: Tang Chen <tangchen@xxxxxxxxxxxxxx>
> Reviewed-by: Zhang Yanfei <zhangyanfei@xxxxxxxxxxxxxx>
> Acked-by: Toshi Kani <toshi.kani@xxxxxx>
> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
> ---
> drivers/acpi/osl.c | 86 +++++++++++++++++++++++++++++++++++++---------------
> 1 files changed, 61 insertions(+), 25 deletions(-)
>
> diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
> index 3b8bab2..0043e9f 100644
> --- a/drivers/acpi/osl.c
> +++ b/drivers/acpi/osl.c
> @@ -572,9 +572,68 @@ static const char * const table_sigs[] = {
> /* Must not increase 10 or needs code modification below */
> #define ACPI_OVERRIDE_TABLES 10
>
> +/*******************************************************************************
> + *
> + * FUNCTION: acpi_verify_table
> + *
> + * PARAMETERS: File - The initrd file
> + * Path - Path to acpi overriding tables in cpio file
> + * Signature - Signature of the table
> + *
> + * RETURN: 0 if it passes all the checks, -EINVAL if any check fails.
> + *
> + * DESCRIPTION: Check if an acpi table found in initrd is invalid.
> + * @signature can be NULL. If it is NULL, the function will check
> + * if the table signature matches any signature in table_sigs[].
> + *
> + ******************************************************************************/
> +int __init acpi_verify_table(struct cpio_data *file,
:
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