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-rw-r--r--drivers/acpi/tables/tbfadt.c17
1 files changed, 11 insertions, 6 deletions
diff --git a/drivers/acpi/tables/tbfadt.c b/drivers/acpi/tables/tbfadt.c
index a4a41ba2484b..ccb5b64bbef3 100644
--- a/drivers/acpi/tables/tbfadt.c
+++ b/drivers/acpi/tables/tbfadt.c
@@ -124,7 +124,7 @@ static struct acpi_fadt_info fadt_info_table[] = {
124 124
125static void inline 125static void inline
126acpi_tb_init_generic_address(struct acpi_generic_address *generic_address, 126acpi_tb_init_generic_address(struct acpi_generic_address *generic_address,
127 u8 bit_width, u64 address) 127 u8 byte_width, u64 address)
128{ 128{
129 129
130 /* 130 /*
@@ -136,7 +136,7 @@ acpi_tb_init_generic_address(struct acpi_generic_address *generic_address,
136 /* All other fields are byte-wide */ 136 /* All other fields are byte-wide */
137 137
138 generic_address->space_id = ACPI_ADR_SPACE_SYSTEM_IO; 138 generic_address->space_id = ACPI_ADR_SPACE_SYSTEM_IO;
139 generic_address->bit_width = bit_width; 139 generic_address->bit_width = byte_width << 3;
140 generic_address->bit_offset = 0; 140 generic_address->bit_offset = 0;
141 generic_address->access_width = 0; 141 generic_address->access_width = 0;
142} 142}
@@ -343,9 +343,11 @@ static void acpi_tb_convert_fadt(void)
343 * 343 *
344 * The PM event blocks are split into two register blocks, first is the 344 * The PM event blocks are split into two register blocks, first is the
345 * PM Status Register block, followed immediately by the PM Enable Register 345 * PM Status Register block, followed immediately by the PM Enable Register
346 * block. Each is of length (pm1_event_length/2) 346 * block. Each is of length (xpm1x_event_block.bit_width/2)
347 */ 347 */
348 pm1_register_length = (u8) ACPI_DIV_2(acpi_gbl_FADT.pm1_event_length); 348 WARN_ON(ACPI_MOD_16(acpi_gbl_FADT.xpm1a_event_block.bit_width));
349 pm1_register_length = (u8) ACPI_DIV_16(acpi_gbl_FADT
350 .xpm1a_event_block.bit_width);
349 351
350 /* The PM1A register block is required */ 352 /* The PM1A register block is required */
351 353
@@ -360,14 +362,17 @@ static void acpi_tb_convert_fadt(void)
360 /* The PM1B register block is optional, ignore if not present */ 362 /* The PM1B register block is optional, ignore if not present */
361 363
362 if (acpi_gbl_FADT.xpm1b_event_block.address) { 364 if (acpi_gbl_FADT.xpm1b_event_block.address) {
365 WARN_ON(ACPI_MOD_16(acpi_gbl_FADT.xpm1b_event_block.bit_width));
366 pm1_register_length = (u8) ACPI_DIV_16(acpi_gbl_FADT
367 .xpm1b_event_block
368 .bit_width);
363 acpi_tb_init_generic_address(&acpi_gbl_xpm1b_enable, 369 acpi_tb_init_generic_address(&acpi_gbl_xpm1b_enable,
364 pm1_register_length, 370 pm1_register_length,
365 (acpi_gbl_FADT.xpm1b_event_block. 371 (acpi_gbl_FADT.xpm1b_event_block.
366 address + pm1_register_length)); 372 address + pm1_register_length));
367 /* Don't forget to copy space_id of the GAS */ 373 /* Don't forget to copy space_id of the GAS */
368 acpi_gbl_xpm1b_enable.space_id = 374 acpi_gbl_xpm1b_enable.space_id =
369 acpi_gbl_FADT.xpm1a_event_block.space_id; 375 acpi_gbl_FADT.xpm1b_event_block.space_id;
370
371 } 376 }
372} 377}
373 378