diff options
Diffstat (limited to 'drivers/acpi/parser/psparse.c')
| -rw-r--r-- | drivers/acpi/parser/psparse.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/acpi/parser/psparse.c b/drivers/acpi/parser/psparse.c index a9f3229..83d8916 100644 --- a/drivers/acpi/parser/psparse.c +++ b/drivers/acpi/parser/psparse.c @@ -106,6 +106,7 @@ u16 acpi_ps_peek_opcode(struct acpi_parse_state * parser_state) opcode = (u16) ACPI_GET8(aml); if (opcode == AML_EXTENDED_OP_PREFIX) { + /* Extended opcode, get the second opcode byte */ aml++; @@ -158,6 +159,7 @@ acpi_ps_complete_this_op(struct acpi_walk_state * walk_state, if (op->common.parent) { prev = op->common.parent->common.value.arg; if (!prev) { + /* Nothing more to do */ goto cleanup; @@ -245,6 +247,7 @@ acpi_ps_complete_this_op(struct acpi_walk_state * walk_state, /* We must unlink this op from the parent tree */ if (prev == op) { + /* This op is the first in the list */ if (replacement_op) { @@ -265,6 +268,7 @@ acpi_ps_complete_this_op(struct acpi_walk_state * walk_state, else while (prev) { + /* Traverse all siblings in the parent's argument list */ next = prev->common.next; @@ -510,6 +514,7 @@ acpi_status acpi_ps_parse_aml(struct acpi_walk_state *walk_state) } else if (status == AE_CTRL_TERMINATE) { status = AE_OK; } else if ((status != AE_OK) && (walk_state->method_desc)) { + /* Either the method parse or actual execution failed */ ACPI_ERROR_METHOD("Method parse/execution failed", @@ -551,6 +556,7 @@ acpi_status acpi_ps_parse_aml(struct acpi_walk_state *walk_state) if (((walk_state->parse_flags & ACPI_PARSE_MODE_MASK) == ACPI_PARSE_EXECUTE) || (ACPI_FAILURE(status))) { if (walk_state->method_desc) { + /* Decrement the thread count on the method parse tree */ if (walk_state->method_desc->method. @@ -633,12 +639,14 @@ acpi_status acpi_ps_parse_aml(struct acpi_walk_state *walk_state) } } else { if (previous_walk_state->return_desc) { + /* Caller doesn't want it, must delete it */ acpi_ut_remove_reference(previous_walk_state-> return_desc); } if (previous_walk_state->implicit_return_obj) { + /* Caller doesn't want it, must delete it */ acpi_ut_remove_reference(previous_walk_state-> |
