diff options
Diffstat (limited to 'drivers/acpi/acpica/dsmethod.c')
| -rw-r--r-- | drivers/acpi/acpica/dsmethod.c | 41 |
1 files changed, 28 insertions, 13 deletions
diff --git a/drivers/acpi/acpica/dsmethod.c b/drivers/acpi/acpica/dsmethod.c index bc32f3194afe..6a72047aae1c 100644 --- a/drivers/acpi/acpica/dsmethod.c +++ b/drivers/acpi/acpica/dsmethod.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2015, Intel Corp. + * Copyright (C) 2000 - 2016, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -118,10 +118,9 @@ acpi_ds_auto_serialize_method(struct acpi_namespace_node *node, return_ACPI_STATUS(AE_NO_MEMORY); } - status = - acpi_ds_init_aml_walk(walk_state, op, node, - obj_desc->method.aml_start, - obj_desc->method.aml_length, NULL, 0); + status = acpi_ds_init_aml_walk(walk_state, op, node, + obj_desc->method.aml_start, + obj_desc->method.aml_length, NULL, 0); if (ACPI_FAILURE(status)) { acpi_ds_delete_walk_state(walk_state); acpi_ps_free_op(op); @@ -375,7 +374,8 @@ acpi_ds_begin_method_execution(struct acpi_namespace_node *method_node, && (walk_state->thread->current_sync_level > obj_desc->method.mutex->mutex.sync_level)) { ACPI_ERROR((AE_INFO, - "Cannot acquire Mutex for method [%4.4s], current SyncLevel is too large (%u)", + "Cannot acquire Mutex for method [%4.4s]" + ", current SyncLevel is too large (%u)", acpi_ut_get_node_name(method_node), walk_state->thread->current_sync_level)); @@ -411,8 +411,19 @@ acpi_ds_begin_method_execution(struct acpi_namespace_node *method_node, obj_desc->method.mutex->mutex.thread_id = walk_state->thread->thread_id; - walk_state->thread->current_sync_level = - obj_desc->method.sync_level; + + /* + * Update the current sync_level only if this is not an auto- + * serialized method. In the auto case, we have to ignore + * the sync level for the method mutex (created for the + * auto-serialization) because we have no idea of what the + * sync level should be. Therefore, just ignore it. + */ + if (!(obj_desc->method.info_flags & + ACPI_METHOD_IGNORE_SYNC_LEVEL)) { + walk_state->thread->current_sync_level = + obj_desc->method.sync_level; + } } else { obj_desc->method.mutex->mutex. original_sync_level = @@ -501,16 +512,18 @@ acpi_ds_call_control_method(struct acpi_thread_state *thread, /* Init for new method, possibly wait on method mutex */ - status = acpi_ds_begin_method_execution(method_node, obj_desc, - this_walk_state); + status = + acpi_ds_begin_method_execution(method_node, obj_desc, + this_walk_state); if (ACPI_FAILURE(status)) { return_ACPI_STATUS(status); } /* Begin method parse/execution. Create a new walk state */ - next_walk_state = acpi_ds_create_walk_state(obj_desc->method.owner_id, - NULL, obj_desc, thread); + next_walk_state = + acpi_ds_create_walk_state(obj_desc->method.owner_id, NULL, obj_desc, + thread); if (!next_walk_state) { status = AE_NO_MEMORY; goto cleanup; @@ -797,7 +810,8 @@ acpi_ds_terminate_control_method(union acpi_operand_object *method_desc, info_flags & ACPI_METHOD_SERIALIZED_PENDING) { if (walk_state) { ACPI_INFO((AE_INFO, - "Marking method %4.4s as Serialized because of AE_ALREADY_EXISTS error", + "Marking method %4.4s as Serialized " + "because of AE_ALREADY_EXISTS error", walk_state->method_node->name. ascii)); } @@ -815,6 +829,7 @@ acpi_ds_terminate_control_method(union acpi_operand_object *method_desc, */ method_desc->method.info_flags &= ~ACPI_METHOD_SERIALIZED_PENDING; + method_desc->method.info_flags |= (ACPI_METHOD_SERIALIZED | ACPI_METHOD_IGNORE_SYNC_LEVEL); |