summaryrefslogtreecommitdiff
path: root/drivers/acpi/executer/exfield.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/acpi/executer/exfield.c')
-rw-r--r--drivers/acpi/executer/exfield.c37
1 files changed, 0 insertions, 37 deletions
diff --git a/drivers/acpi/executer/exfield.c b/drivers/acpi/executer/exfield.c
index da772cb91d7f..aef8db82570a 100644
--- a/drivers/acpi/executer/exfield.c
+++ b/drivers/acpi/executer/exfield.c
@@ -210,9 +210,7 @@ acpi_ex_write_data_to_field(union acpi_operand_object *source_desc,
{
acpi_status status;
u32 length;
- u32 required_length;
void *buffer;
- void *new_buffer;
union acpi_operand_object *buffer_desc;
ACPI_FUNCTION_TRACE_PTR(ex_write_data_to_field, obj_desc);
@@ -312,35 +310,6 @@ acpi_ex_write_data_to_field(union acpi_operand_object *source_desc,
return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
}
- /*
- * We must have a buffer that is at least as long as the field
- * we are writing to. This is because individual fields are
- * indivisible and partial writes are not supported -- as per
- * the ACPI specification.
- */
- new_buffer = NULL;
- required_length =
- ACPI_ROUND_BITS_UP_TO_BYTES(obj_desc->common_field.bit_length);
-
- if (length < required_length) {
-
- /* We need to create a new buffer */
-
- new_buffer = ACPI_ALLOCATE_ZEROED(required_length);
- if (!new_buffer) {
- return_ACPI_STATUS(AE_NO_MEMORY);
- }
-
- /*
- * Copy the original data to the new buffer, starting
- * at Byte zero. All unused (upper) bytes of the
- * buffer will be 0.
- */
- ACPI_MEMCPY((char *)new_buffer, (char *)buffer, length);
- buffer = new_buffer;
- length = required_length;
- }
-
ACPI_DEBUG_PRINT((ACPI_DB_BFIELD,
"FieldWrite [FROM]: Obj %p (%s:%X), Buf %p, ByteLen %X\n",
source_desc,
@@ -366,11 +335,5 @@ acpi_ex_write_data_to_field(union acpi_operand_object *source_desc,
status = acpi_ex_insert_into_field(obj_desc, buffer, length);
acpi_ex_release_global_lock(obj_desc->common_field.field_flags);
- /* Free temporary buffer if we used one */
-
- if (new_buffer) {
- ACPI_FREE(new_buffer);
- }
-
return_ACPI_STATUS(status);
}