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| author | Bob Moore <robert.moore@intel.com> | 2016-12-28 15:29:49 +0800 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2017-01-05 02:48:22 +0100 |
| commit | 9a947291374dbf377c4110f2387f3386d88cf5b0 (patch) | |
| tree | f726aad36013e942b93f2f4a9316617ab30b6206 /drivers/acpi | |
| parent | ce87e09dd88c61f9088768a7708828423549725c (diff) | |
| download | linux-9a947291374dbf377c4110f2387f3386d88cf5b0.tar.bz2 | |
ACPICA: Fix a problem with recent extra support for control method invocations
ACPICA commit b7dae343fbb8c392999a66f5e08be5744a5d07e2
This change fixes a problem with the recent support that enables
control method invocations as Target operands to many ASL
operators. Eliminates errors similar to:
Needed type [Reference], found [Processor]
Link: https://github.com/acpica/acpica/commit/b7dae343
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/acpi')
| -rw-r--r-- | drivers/acpi/acpica/psargs.c | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/drivers/acpi/acpica/psargs.c b/drivers/acpi/acpica/psargs.c index 4e1065e84da8..b0e55a7d4bdf 100644 --- a/drivers/acpi/acpica/psargs.c +++ b/drivers/acpi/acpica/psargs.c @@ -269,6 +269,20 @@ acpi_ps_get_next_namepath(struct acpi_walk_state *walk_state, */ if (ACPI_SUCCESS(status) && possible_method_call && (node->type == ACPI_TYPE_METHOD)) { + if ((GET_CURRENT_ARG_TYPE(walk_state->arg_types) == + ARGP_SUPERNAME) + || (GET_CURRENT_ARG_TYPE(walk_state->arg_types) == + ARGP_TARGET)) { + /* + * acpi_ps_get_next_namestring has increased the AML pointer past + * the method invocation namestring, so we need to restore the + * saved AML pointer back to the original method invocation + * namestring. + */ + walk_state->parser_state.aml = start; + walk_state->arg_count = 1; + acpi_ps_init_op(arg, AML_INT_METHODCALL_OP); + } /* This name is actually a control method invocation */ @@ -833,7 +847,10 @@ acpi_ps_get_next_arg(struct acpi_walk_state *walk_state, arg_type)); subop = acpi_ps_peek_opcode(parser_state); - if (subop == 0) { + if (subop == 0 || + acpi_ps_is_leading_char(subop) || + ACPI_IS_ROOT_PREFIX(subop) || + ACPI_IS_PARENT_PREFIX(subop)) { /* NULL target (zero). Convert to a NULL namepath */ @@ -848,6 +865,12 @@ acpi_ps_get_next_arg(struct acpi_walk_state *walk_state, acpi_ps_get_next_namepath(walk_state, parser_state, arg, ACPI_POSSIBLE_METHOD_CALL); + + if (arg->common.aml_opcode == AML_INT_METHODCALL_OP) { + acpi_ps_free_op(arg); + arg = NULL; + walk_state->arg_count = 1; + } } else { /* Single complex argument, nothing returned */ |