Commit b1d77fae authored by Andi Kleen's avatar Andi Kleen
Browse files

Revert "Fix FADT parsing" 



This reverts commit 01a5bba5.

There seem to be some FADTs around with bogus information
in the v2 fields. Revert this patch for now until
this can be properly resolved.

Signed-off-by: default avatarAndi Kleen <ak@linux.intel.com>
parent 5b664cb2

drivers/acpi/tables/tbfadt.c

+6 −11
Original line number Diff line number Diff line
@@ -124,7 +124,7 @@ static struct acpi_fadt_info fadt_info_table[] = { 


static void inline

acpi_tb_init_generic_address(struct acpi_generic_address *generic_address,

			     u8 byte_width, u64 address)

			     u8 bit_width, u64 address)

{



	/*
@@ -136,7 +136,7 @@ acpi_tb_init_generic_address(struct acpi_generic_address *generic_address, 
	/* All other fields are byte-wide */



	generic_address->space_id = ACPI_ADR_SPACE_SYSTEM_IO;

	generic_address->bit_width = byte_width << 3;

	generic_address->bit_width = bit_width;

	generic_address->bit_offset = 0;

	generic_address->access_width = 0;

}
@@ -343,11 +343,9 @@ static void acpi_tb_convert_fadt(void) 
	 *

	 * The PM event blocks are split into two register blocks, first is the

	 * PM Status Register block, followed immediately by the PM Enable Register

	 * block. Each is of length (xpm1x_event_block.bit_width/2)

	 * block. Each is of length (pm1_event_length/2)

	 */

	WARN_ON(ACPI_MOD_16(acpi_gbl_FADT.xpm1a_event_block.bit_width));

	pm1_register_length = (u8) ACPI_DIV_16(acpi_gbl_FADT

					       .xpm1a_event_block.bit_width);

	pm1_register_length = (u8) ACPI_DIV_2(acpi_gbl_FADT.pm1_event_length);



	/* The PM1A register block is required */
@@ -362,17 +360,14 @@ static void acpi_tb_convert_fadt(void) 
	/* The PM1B register block is optional, ignore if not present */



	if (acpi_gbl_FADT.xpm1b_event_block.address) {

		WARN_ON(ACPI_MOD_16(acpi_gbl_FADT.xpm1b_event_block.bit_width));

		pm1_register_length = (u8) ACPI_DIV_16(acpi_gbl_FADT

						       .xpm1b_event_block

						       .bit_width);

		acpi_tb_init_generic_address(&acpi_gbl_xpm1b_enable,

					     pm1_register_length,

					     (acpi_gbl_FADT.xpm1b_event_block.

					      address + pm1_register_length));

		/* Don't forget to copy space_id of the GAS */

		acpi_gbl_xpm1b_enable.space_id =

		    acpi_gbl_FADT.xpm1b_event_block.space_id;

		    acpi_gbl_FADT.xpm1a_event_block.space_id;



	}

}