diff options
Diffstat (limited to 'drivers/acpi/tables/tbconvrt.c')
| -rw-r--r-- | drivers/acpi/tables/tbconvrt.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/acpi/tables/tbconvrt.c b/drivers/acpi/tables/tbconvrt.c index 03b37d2223bc..254ebdbb7bef 100644 --- a/drivers/acpi/tables/tbconvrt.c +++ b/drivers/acpi/tables/tbconvrt.c @@ -147,6 +147,7 @@ acpi_status acpi_tb_convert_to_xsdt(struct acpi_table_desc *table_info) /* Copy the table pointers */ for (i = 0; i < acpi_gbl_rsdt_table_count; i++) { + /* RSDT pointers are 32 bits, XSDT pointers are 64 bits */ if (acpi_gbl_root_table_type == ACPI_TABLE_TYPE_RSDT) { @@ -515,6 +516,7 @@ acpi_status acpi_tb_convert_table_fadt(void) if (acpi_gbl_FADT->revision >= FADT2_REVISION_ID) { if (acpi_gbl_FADT->length < sizeof(struct fadt_descriptor_rev2)) { + /* Length is too short to be a V2.0 table */ ACPI_WARNING((AE_INFO, @@ -603,6 +605,7 @@ acpi_status acpi_tb_build_common_facs(struct acpi_table_desc *table_info) if ((acpi_gbl_RSDP->revision < 2) || (acpi_gbl_FACS->length < 32) || (!(acpi_gbl_FACS->xfirmware_waking_vector))) { + /* ACPI 1.0 FACS or short table or optional X_ field is zero */ acpi_gbl_common_fACS.firmware_waking_vector = ACPI_CAST_PTR(u64, |