ACPICA: add comments, no functional change

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Erik Schmauss <erik.schmauss@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

diff --git a/drivers/acpi/acpica/exoparg2.c b/drivers/acpi/acpica/exoparg2.c
index d5b3efd..3a47756 100644 (file)
--- a/drivers/acpi/acpica/exoparg2.c
+++ b/drivers/acpi/acpica/exoparg2.c
@@ -287,9 +287,9 @@ acpi_status acpi_ex_opcode_2A_1T_1R(struct acpi_walk_state *walk_state)
                 * NOTE: A length of zero is ok, and will create a zero-length, null
                 *       terminated string.
                 */
-               while ((length < operand[0]->buffer.length) &&
-                      (length < operand[1]->integer.value) &&
-                      (operand[0]->buffer.pointer[length])) {
+               while ((length < operand[0]->buffer.length) &&  /* Length of input buffer */
+                      (length < operand[1]->integer.value) &&  /* Length operand */
+                      (operand[0]->buffer.pointer[length])) {  /* Null terminator */
                        length++;
                }