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Commit c857303a authored by Bob Moore's avatar Bob Moore Committed by Len Brown
Browse files

ACPICA: Fail AcpiEnable if ACPI tables not loaded. 



AcpiEnable will now fail if all of the required ACPI tables are not
loaded (FADT, FACS, DSDT). BZ 477

Signed-off-by: default avatarAlexey Starikovskiy <alexey.y.starikovskiy@intel.com>
Signed-off-by: default avatarLen Brown <len.brown@intel.com>
parent 987c21a0

drivers/acpi/events/evxfevnt.c

+8 −0
Original line number Diff line number Diff line
@@ -65,6 +65,14 @@ acpi_status acpi_enable(void) 


	ACPI_FUNCTION_TRACE(acpi_enable);



	/* ACPI tables must be present */



	if (!acpi_tb_tables_loaded()) {

		return_ACPI_STATUS(AE_NO_ACPI_TABLES);

	}



	/* Check current mode */



	if (acpi_hw_get_mode() == ACPI_SYS_MODE_ACPI) {

		ACPI_DEBUG_PRINT((ACPI_DB_INIT,

				  "System is already in ACPI mode\n"));

drivers/acpi/tables/tbutils.c

+23 −0
Original line number Diff line number Diff line
@@ -52,6 +52,29 @@ static acpi_physical_address 
acpi_tb_get_root_table_entry(u8 * table_entry,

			     acpi_native_uint table_entry_size);



/*******************************************************************************

 *

 * FUNCTION:    acpi_tb_tables_loaded

 *

 * PARAMETERS:  None

 *

 * RETURN:      TRUE if required ACPI tables are loaded

 *

 * DESCRIPTION: Determine if the minimum required ACPI tables are present

 *              (FADT, FACS, DSDT)

 *

 ******************************************************************************/



u8 acpi_tb_tables_loaded(void)

{



	if (acpi_gbl_root_table_list.count >= 3) {

		return (TRUE);

	}



	return (FALSE);

}



/*******************************************************************************

 *

 * FUNCTION:    acpi_tb_print_table_header

include/acpi/actables.h

+2 −0
Original line number Diff line number Diff line
@@ -97,6 +97,8 @@ void acpi_tb_set_table_loaded_flag(acpi_native_uint table_index, u8 is_loaded); 
/*

 * tbutils - table manager utilities

 */

u8 acpi_tb_tables_loaded(void);



void

acpi_tb_print_table_header(acpi_physical_address address,

			   struct acpi_table_header *header);