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    Subject[PATCH 09/32] ACPICA: Tables: Fix an issue that ACPI initialization is blocked due to no FACS.
    Date
    ACPICA commit ebd544ed24c5a4faba11f265e228b7a821a729f5

    This patch fixes an issue that when FACS tables do not exist, ACPI
    initialization cannot proceed. ACPICA BZ 1122. Lv Zheng.

    Link: https://bugs.acpica.org/show_bug.cgi?id=1122
    Link: https://github.com/acpica/acpica/commit/ebd544ed
    Signed-off-by: Lv Zheng <lv.zheng@intel.com>
    Signed-off-by: Bob Moore <robert.moore@intel.com>
    ---
    drivers/acpi/acpica/tbutils.c | 16 +++++++---------
    1 file changed, 7 insertions(+), 9 deletions(-)

    diff --git a/drivers/acpi/acpica/tbutils.c b/drivers/acpi/acpica/tbutils.c
    index 6a6c5be..2bb6a11 100644
    --- a/drivers/acpi/acpica/tbutils.c
    +++ b/drivers/acpi/acpica/tbutils.c
    @@ -84,18 +84,16 @@ acpi_status acpi_tb_initialize_facs(void)
    ACPI_CAST_INDIRECT_PTR(struct
    acpi_table_header,
    &acpi_gbl_facs64));
    - if (!acpi_gbl_facs32 && !acpi_gbl_facs64) {
    - return (AE_NO_MEMORY);
    - }

    - if (acpi_gbl_use32_bit_facs_addresses) {
    - acpi_gbl_FACS =
    - acpi_gbl_facs32 ? acpi_gbl_facs32 : acpi_gbl_facs64;
    - } else {
    - acpi_gbl_FACS =
    - acpi_gbl_facs64 ? acpi_gbl_facs64 : acpi_gbl_facs32;
    + if (acpi_gbl_facs64
    + && (!acpi_gbl_facs32 || !acpi_gbl_use32_bit_facs_addresses)) {
    + acpi_gbl_FACS = acpi_gbl_facs64;
    + } else if (acpi_gbl_facs32) {
    + acpi_gbl_FACS = acpi_gbl_facs32;
    }

    + /* If there is no FACS, just continue. There was already an error msg */
    +
    return (AE_OK);
    }
    #endif /* !ACPI_REDUCED_HARDWARE */
    --
    1.7.10


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