diff options
| author | Alexey Starikovskiy <astarikovskiy@suse.de> | 2010-03-17 13:14:13 -0400 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2010-03-17 13:14:13 -0400 |
| commit | dadf28a10c3eb29421837a2e413ab869ebd9e168 (patch) | |
| tree | f4ea66f2ceb12935e3b2c1d3889102dee0dfa778 /drivers/acpi/acpica/exprep.c | |
| parent | a3d3203e4bb40f253b1541e310dc0f9305be7c84 (diff) | |
ACPI: EC: Allow multibyte access to EC
http://bugzilla.kernel.org/show_bug.cgi?id=14667
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi/acpica/exprep.c')
| -rw-r--r-- | drivers/acpi/acpica/exprep.c | 12 |
1 files changed, 12 insertions, 0 deletions
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, |