From dadf28a10c3eb29421837a2e413ab869ebd9e168 Mon Sep 17 00:00:00 2001 From: Alexey Starikovskiy Date: Wed, 17 Mar 2010 13:14:13 -0400 Subject: ACPI: EC: Allow multibyte access to EC http://bugzilla.kernel.org/show_bug.cgi?id=14667 Signed-off-by: Alexey Starikovskiy Signed-off-by: Len Brown --- drivers/acpi/acpica/exprep.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'drivers/acpi/acpica/exprep.c') diff --git a/drivers/acpi/acpica/exprep.c b/drivers/acpi/acpica/exprep.c index edf62bf5b266..a610ebe18edd 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, -- cgit v1.2.2