ACPICA: Several fixes for internal method result stack

fixes STACK_OVERFLOW exception on nested method calls. internal
bugzilla 262 and 275.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/include/acpi/acstruct.h b/include/acpi/acstruct.h
index 88482655407f..19b838dc1a16 100644
--- a/include/acpi/acstruct.h
+++ b/include/acpi/acstruct.h
@@ -80,12 +80,15 @@ struct acpi_walk_state {
         u16 opcode;             /* Current AML opcode */
         u8 next_op_info;        /* Info about next_op */
         u8 num_operands;        /* Stack pointer for Operands[] array */
+        u8 operand_index;       /* Index into operand stack, to be used by acpi_ds_obj_stack_push */
         acpi_owner_id owner_id; /* Owner of objects created during the walk */
         u8 last_predicate;      /* Result of last predicate */
         u8 current_result;
         u8 return_used;
         u8 scope_depth;
         u8 pass_number;         /* Parse pass during table load */
+        u8 result_size;         /* Total elements for the result stack */
+        u8 result_count;        /* Current number of occupied elements of result stack */
         u32 aml_offset;
         u32 arg_types;
         u32 method_breakpoint;  /* For single stepping */