diff options
| author | Lv Zheng <lv.zheng@intel.com> | 2016-09-07 14:07:16 +0800 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2016-09-10 02:43:02 +0200 |
| commit | 441ad11d078f35093ceaf510742df423c2d89a3b (patch) | |
| tree | 5fc790f4b64005881c5ec0eb8ccc408867d76361 /drivers/acpi/acpica | |
| parent | 74f51b80a0c4ff84fbeb7f12ea43ce66934d29aa (diff) | |
ACPICA: Dispatcher: Fix a mutex issue for method auto serialization
ACPICA commit fd305eda14f1a1e684edef4fac53f194bf00ed3f
This patch fixes an issue with acpi_ds_auto_serialized_method().
The parser will invoke acpi_ex_release_all_mutexes(), which in return
cause mutexes held in ACPI_ERROR_METHOD() failed. Lv Zheng.
Link: https://bugs.acpica.org/show_bug.cgi?id=1324
Link: https://github.com/acpica/acpica/commit/fd305eda
Tested-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Tested-by: Greg White <gwhite@kupulau.com>
Tested-by: Dutch Guy <lucht_piloot@gmx.net>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/acpi/acpica')
| -rw-r--r-- | drivers/acpi/acpica/dsmethod.c | 10 | ||||
| -rw-r--r-- | drivers/acpi/acpica/psparse.c | 2 |
2 files changed, 10 insertions, 2 deletions
diff --git a/drivers/acpi/acpica/dsmethod.c b/drivers/acpi/acpica/dsmethod.c index 25b387a6d8be..32e9ddc0cf2b 100644 --- a/drivers/acpi/acpica/dsmethod.c +++ b/drivers/acpi/acpica/dsmethod.c @@ -99,11 +99,14 @@ acpi_ds_auto_serialize_method(struct acpi_namespace_node *node, "Method auto-serialization parse [%4.4s] %p\n", acpi_ut_get_node_name(node), node)); + acpi_ex_enter_interpreter(); + /* Create/Init a root op for the method parse tree */ op = acpi_ps_alloc_op(AML_METHOD_OP, obj_desc->method.aml_start); if (!op) { - return_ACPI_STATUS(AE_NO_MEMORY); + status = AE_NO_MEMORY; + goto unlock; } acpi_ps_set_name(op, node->name.integer); @@ -115,7 +118,8 @@ acpi_ds_auto_serialize_method(struct acpi_namespace_node *node, acpi_ds_create_walk_state(node->owner_id, NULL, NULL, NULL); if (!walk_state) { acpi_ps_free_op(op); - return_ACPI_STATUS(AE_NO_MEMORY); + status = AE_NO_MEMORY; + goto unlock; } status = acpi_ds_init_aml_walk(walk_state, op, node, @@ -134,6 +138,8 @@ acpi_ds_auto_serialize_method(struct acpi_namespace_node *node, status = acpi_ps_parse_aml(walk_state); acpi_ps_delete_parse_tree(op); +unlock: + acpi_ex_exit_interpreter(); return_ACPI_STATUS(status); } diff --git a/drivers/acpi/acpica/psparse.c b/drivers/acpi/acpica/psparse.c index 3aa91625fca7..1ce26d9f8ff6 100644 --- a/drivers/acpi/acpica/psparse.c +++ b/drivers/acpi/acpica/psparse.c @@ -537,9 +537,11 @@ acpi_status acpi_ps_parse_aml(struct acpi_walk_state *walk_state) /* Either the method parse or actual execution failed */ + acpi_ex_exit_interpreter(); ACPI_ERROR_METHOD("Method parse/execution failed", walk_state->method_node, NULL, status); + acpi_ex_enter_interpreter(); /* Check for possible multi-thread reentrancy problem */ |