ACPI: ACPICA 20060310

Tagged all external interfaces to the subsystem with the
new ACPI_EXPORT_SYMBOL macro. This macro can be defined
as necessary to assist kernel integration. For Linux,
the macro resolves to the EXPORT_SYMBOL macro. The default
definition is NULL.

Added the ACPI_THREAD_ID type for the return value from
acpi_os_get_thread_id(). This allows the host to define this
as necessary to simplify kernel integration. The default
definition is ACPI_NATIVE_UINT.

Valery Podrezov fixed two interpreter problems related
to error processing, the deletion of objects, and placing
invalid pointers onto the internal operator result stack.
http://bugzilla.kernel.org/show_bug.cgi?id=6028
http://bugzilla.kernel.org/show_bug.cgi?id=6151

Increased the reference count threshold where a warning is
emitted for large reference counts in order to eliminate
unnecessary warnings on systems with large namespaces
(especially 64-bit.) Increased the value from 0x400
to 0x800.

Due to universal disagreement as to the meaning of the
'c' in the calloc() function, the ACPI_MEM_CALLOCATE
macro has been renamed to ACPI_ALLOCATE_ZEROED so that the
purpose of the interface is 'clear'. ACPI_MEM_ALLOCATE and
ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and ACPI_FREE.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>

drivers/acpi/executer/exoparg1.c

@@ -554,16 +554,18 @@ acpi_status acpi_ex_opcode_1A_1T_1R(struct acpi_walk_state *walk_state)
 
       cleanup:
 
-	if (!walk_state->result_obj) {
-		walk_state->result_obj = return_desc;
-	}
-
 	/* Delete return object on error */
 
 	if (ACPI_FAILURE(status)) {
 		acpi_ut_remove_reference(return_desc);
 	}
 
+	/* Save return object on success */
+
+	else if (!walk_state->result_obj) {
+		walk_state->result_obj = return_desc;
+	}
+
 	return_ACPI_STATUS(status);
 }
 
@@ -1028,6 +1030,11 @@ acpi_status acpi_ex_opcode_1A_0T_1R(struct acpi_walk_state *walk_state)
 		acpi_ut_remove_reference(return_desc);
 	}
 
-	walk_state->result_obj = return_desc;
+	/* Save return object on success */
+
+	else {
+		walk_state->result_obj = return_desc;
+	}
+
 	return_ACPI_STATUS(status);
 }