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path: root/drivers/acpi/acpica/exprep.c
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Diffstat (limited to 'drivers/acpi/acpica/exprep.c')
-rw-r--r--drivers/acpi/acpica/exprep.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/acpi/acpica/exprep.c b/drivers/acpi/acpica/exprep.c
index edf62bf5b26..a610ebe18ed 100644
--- a/drivers/acpi/acpica/exprep.c
+++ b/drivers/acpi/acpica/exprep.c
@@ -468,6 +468,18 @@ acpi_status acpi_ex_prep_field_value(struct acpi_create_field_info *info)
acpi_ut_add_reference(obj_desc->field.region_obj);
+ /* allow full data read from EC address space */
+ if (obj_desc->field.region_obj->region.space_id ==
+ ACPI_ADR_SPACE_EC) {
+ if (obj_desc->common_field.bit_length > 8)
+ obj_desc->common_field.access_bit_width =
+ ACPI_ROUND_UP(obj_desc->common_field.
+ bit_length, 8);
+ obj_desc->common_field.access_byte_width =
+ ACPI_DIV_8(obj_desc->common_field.
+ access_bit_width);
+ }
+
ACPI_DEBUG_PRINT((ACPI_DB_BFIELD,
"RegionField: BitOff %X, Off %X, Gran %X, Region %p\n",
obj_desc->field.start_field_bit_offset,