ACPICA: Temporary fix for BankValue parameter

Temporary fix for BankValue parameter of a Bank
Field to support all constant values, including Zero
and One. Must eventually be converted to a full TermArg
evaluation.

Signed-off-by: Alexey Starikovskiy <alexey.y.starikovskiy@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>

diff --git a/drivers/acpi/dispatcher/dsfield.c b/drivers/acpi/dispatcher/dsfield.c
index a6d77ef..379dd71 100644 (file)
--- a/drivers/acpi/dispatcher/dsfield.c
+++ b/drivers/acpi/dispatcher/dsfield.c
@@ -133,7 +133,8 @@ acpi_ds_create_buffer_field(union acpi_parse_object *op,
                }
        }
 
-       /* We could put the returned object (Node) on the object stack for later,
+       /*
+        * We could put the returned object (Node) on the object stack for later,
         * but for now, we will put it in the "op" object that the parser uses,
         * so we can get it again at the end of this scope
         */
@@ -514,8 +515,33 @@ acpi_ds_create_bank_field(union acpi_parse_object *op,
 
        /* Third arg is the bank_value */
 
+       /* TBD: This arg is a term_arg, not a constant, and must be evaluated */
+
        arg = arg->common.next;
-       info.bank_value = (u32) arg->common.value.integer;
+
+       /* Currently, only the following constants are supported */
+
+       switch (arg->common.aml_opcode) {
+       case AML_ZERO_OP:
+               info.bank_value = 0;
+               break;
+
+       case AML_ONE_OP:
+               info.bank_value = 1;
+               break;
+
+       case AML_BYTE_OP:
+       case AML_WORD_OP:
+       case AML_DWORD_OP:
+       case AML_QWORD_OP:
+               info.bank_value = (u32) arg->common.value.integer;
+               break;
+
+       default:
+               info.bank_value = 0;
+               ACPI_ERROR((AE_INFO,
+                           "Non-constant BankValue for BankField is not implemented"));
+       }
 
        /* Fourth arg is the field flags */