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![Linus Torvalds](/assets/img/avatar_default.png)
Commit 71f6428332
("ACPI: utils: Fix reference counting in
for_each_acpi_dev_match()") started doing "acpi_dev_put()" on a pointer
that was possibly NULL. That fails miserably, because that helper
inline function is not set up to handle that case.
Just make acpi_dev_put() silently accept a NULL pointer, rather than
calling down to put_device() with an invalid offset off that NULL
pointer.
Link: https://lore.kernel.org/lkml/a607c149-6bf6-0fd0-0e31-100378504da2@kernel.dk/
Reported-and-tested-by: Jens Axboe <axboe@kernel.dk>
Tested-by: Daniel Scally <djrscally@gmail.com>
Cc: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
740 lines
20 KiB
C
740 lines
20 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* acpi_bus.h - ACPI Bus Driver ($Revision: 22 $)
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*
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* Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com>
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* Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
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*/
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#ifndef __ACPI_BUS_H__
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#define __ACPI_BUS_H__
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#include <linux/device.h>
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#include <linux/property.h>
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/* TBD: Make dynamic */
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#define ACPI_MAX_HANDLES 10
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struct acpi_handle_list {
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u32 count;
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acpi_handle handles[ACPI_MAX_HANDLES];
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};
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/* acpi_utils.h */
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acpi_status
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acpi_extract_package(union acpi_object *package,
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struct acpi_buffer *format, struct acpi_buffer *buffer);
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acpi_status
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acpi_evaluate_integer(acpi_handle handle,
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acpi_string pathname,
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struct acpi_object_list *arguments, unsigned long long *data);
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acpi_status
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acpi_evaluate_reference(acpi_handle handle,
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acpi_string pathname,
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struct acpi_object_list *arguments,
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struct acpi_handle_list *list);
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acpi_status
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acpi_evaluate_ost(acpi_handle handle, u32 source_event, u32 status_code,
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struct acpi_buffer *status_buf);
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acpi_status
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acpi_get_physical_device_location(acpi_handle handle, struct acpi_pld_info **pld);
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bool acpi_has_method(acpi_handle handle, char *name);
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acpi_status acpi_execute_simple_method(acpi_handle handle, char *method,
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u64 arg);
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acpi_status acpi_evaluate_ej0(acpi_handle handle);
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acpi_status acpi_evaluate_lck(acpi_handle handle, int lock);
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acpi_status acpi_evaluate_reg(acpi_handle handle, u8 space_id, u32 function);
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bool acpi_ata_match(acpi_handle handle);
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bool acpi_bay_match(acpi_handle handle);
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bool acpi_dock_match(acpi_handle handle);
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bool acpi_check_dsm(acpi_handle handle, const guid_t *guid, u64 rev, u64 funcs);
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union acpi_object *acpi_evaluate_dsm(acpi_handle handle, const guid_t *guid,
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u64 rev, u64 func, union acpi_object *argv4);
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static inline union acpi_object *
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acpi_evaluate_dsm_typed(acpi_handle handle, const guid_t *guid, u64 rev,
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u64 func, union acpi_object *argv4,
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acpi_object_type type)
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{
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union acpi_object *obj;
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obj = acpi_evaluate_dsm(handle, guid, rev, func, argv4);
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if (obj && obj->type != type) {
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ACPI_FREE(obj);
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obj = NULL;
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}
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return obj;
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}
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#define ACPI_INIT_DSM_ARGV4(cnt, eles) \
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{ \
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.package.type = ACPI_TYPE_PACKAGE, \
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.package.count = (cnt), \
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.package.elements = (eles) \
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}
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bool acpi_dev_found(const char *hid);
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bool acpi_dev_present(const char *hid, const char *uid, s64 hrv);
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bool acpi_reduced_hardware(void);
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#ifdef CONFIG_ACPI
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struct proc_dir_entry;
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#define ACPI_BUS_FILE_ROOT "acpi"
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extern struct proc_dir_entry *acpi_root_dir;
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enum acpi_bus_device_type {
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ACPI_BUS_TYPE_DEVICE = 0,
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ACPI_BUS_TYPE_POWER,
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ACPI_BUS_TYPE_PROCESSOR,
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ACPI_BUS_TYPE_THERMAL,
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ACPI_BUS_TYPE_POWER_BUTTON,
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ACPI_BUS_TYPE_SLEEP_BUTTON,
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ACPI_BUS_TYPE_ECDT_EC,
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ACPI_BUS_DEVICE_TYPE_COUNT
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};
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struct acpi_driver;
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struct acpi_device;
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/*
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* ACPI Scan Handler
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* -----------------
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*/
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struct acpi_hotplug_profile {
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struct kobject kobj;
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int (*scan_dependent)(struct acpi_device *adev);
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void (*notify_online)(struct acpi_device *adev);
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bool enabled:1;
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bool demand_offline:1;
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};
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static inline struct acpi_hotplug_profile *to_acpi_hotplug_profile(
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struct kobject *kobj)
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{
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return container_of(kobj, struct acpi_hotplug_profile, kobj);
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}
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struct acpi_scan_handler {
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const struct acpi_device_id *ids;
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struct list_head list_node;
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bool (*match)(const char *idstr, const struct acpi_device_id **matchid);
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int (*attach)(struct acpi_device *dev, const struct acpi_device_id *id);
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void (*detach)(struct acpi_device *dev);
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void (*bind)(struct device *phys_dev);
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void (*unbind)(struct device *phys_dev);
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struct acpi_hotplug_profile hotplug;
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};
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/*
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* ACPI Hotplug Context
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* --------------------
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*/
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struct acpi_hotplug_context {
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struct acpi_device *self;
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int (*notify)(struct acpi_device *, u32);
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void (*uevent)(struct acpi_device *, u32);
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void (*fixup)(struct acpi_device *);
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};
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/*
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* ACPI Driver
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* -----------
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*/
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typedef int (*acpi_op_add) (struct acpi_device * device);
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typedef int (*acpi_op_remove) (struct acpi_device * device);
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typedef void (*acpi_op_notify) (struct acpi_device * device, u32 event);
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struct acpi_device_ops {
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acpi_op_add add;
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acpi_op_remove remove;
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acpi_op_notify notify;
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};
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#define ACPI_DRIVER_ALL_NOTIFY_EVENTS 0x1 /* system AND device events */
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struct acpi_driver {
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char name[80];
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char class[80];
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const struct acpi_device_id *ids; /* Supported Hardware IDs */
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unsigned int flags;
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struct acpi_device_ops ops;
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struct device_driver drv;
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struct module *owner;
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};
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/*
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* ACPI Device
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* -----------
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*/
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/* Status (_STA) */
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struct acpi_device_status {
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u32 present:1;
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u32 enabled:1;
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u32 show_in_ui:1;
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u32 functional:1;
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u32 battery_present:1;
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u32 reserved:27;
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};
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/* Flags */
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struct acpi_device_flags {
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u32 dynamic_status:1;
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u32 removable:1;
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u32 ejectable:1;
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u32 power_manageable:1;
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u32 match_driver:1;
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u32 initialized:1;
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u32 visited:1;
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u32 hotplug_notify:1;
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u32 is_dock_station:1;
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u32 of_compatible_ok:1;
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u32 coherent_dma:1;
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u32 cca_seen:1;
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u32 enumeration_by_parent:1;
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u32 reserved:19;
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};
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/* File System */
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struct acpi_device_dir {
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struct proc_dir_entry *entry;
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};
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#define acpi_device_dir(d) ((d)->dir.entry)
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/* Plug and Play */
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typedef char acpi_bus_id[8];
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typedef u64 acpi_bus_address;
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typedef char acpi_device_name[40];
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typedef char acpi_device_class[20];
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struct acpi_hardware_id {
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struct list_head list;
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const char *id;
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};
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struct acpi_pnp_type {
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u32 hardware_id:1;
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u32 bus_address:1;
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u32 platform_id:1;
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u32 reserved:29;
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};
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struct acpi_device_pnp {
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acpi_bus_id bus_id; /* Object name */
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int instance_no; /* Instance number of this object */
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struct acpi_pnp_type type; /* ID type */
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acpi_bus_address bus_address; /* _ADR */
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char *unique_id; /* _UID */
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struct list_head ids; /* _HID and _CIDs */
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acpi_device_name device_name; /* Driver-determined */
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acpi_device_class device_class; /* " */
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union acpi_object *str_obj; /* unicode string for _STR method */
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};
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#define acpi_device_bid(d) ((d)->pnp.bus_id)
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#define acpi_device_adr(d) ((d)->pnp.bus_address)
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const char *acpi_device_hid(struct acpi_device *device);
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#define acpi_device_uid(d) ((d)->pnp.unique_id)
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#define acpi_device_name(d) ((d)->pnp.device_name)
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#define acpi_device_class(d) ((d)->pnp.device_class)
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/* Power Management */
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struct acpi_device_power_flags {
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u32 explicit_get:1; /* _PSC present? */
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u32 power_resources:1; /* Power resources */
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u32 inrush_current:1; /* Serialize Dx->D0 */
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u32 power_removed:1; /* Optimize Dx->D0 */
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u32 ignore_parent:1; /* Power is independent of parent power state */
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u32 dsw_present:1; /* _DSW present? */
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u32 reserved:26;
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};
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struct acpi_device_power_state {
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struct {
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u8 valid:1;
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u8 explicit_set:1; /* _PSx present? */
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u8 reserved:6;
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} flags;
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int power; /* % Power (compared to D0) */
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int latency; /* Dx->D0 time (microseconds) */
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struct list_head resources; /* Power resources referenced */
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};
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struct acpi_device_power {
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int state; /* Current state */
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struct acpi_device_power_flags flags;
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struct acpi_device_power_state states[ACPI_D_STATE_COUNT]; /* Power states (D0-D3Cold) */
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};
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struct acpi_dep_data {
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struct list_head node;
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acpi_handle supplier;
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acpi_handle consumer;
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};
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/* Performance Management */
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struct acpi_device_perf_flags {
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u8 reserved:8;
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};
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struct acpi_device_perf_state {
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struct {
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u8 valid:1;
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u8 reserved:7;
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} flags;
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u8 power; /* % Power (compared to P0) */
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u8 performance; /* % Performance ( " ) */
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int latency; /* Px->P0 time (microseconds) */
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};
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struct acpi_device_perf {
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int state;
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struct acpi_device_perf_flags flags;
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int state_count;
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struct acpi_device_perf_state *states;
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};
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/* Wakeup Management */
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struct acpi_device_wakeup_flags {
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u8 valid:1; /* Can successfully enable wakeup? */
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u8 notifier_present:1; /* Wake-up notify handler has been installed */
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};
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struct acpi_device_wakeup_context {
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void (*func)(struct acpi_device_wakeup_context *context);
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struct device *dev;
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};
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struct acpi_device_wakeup {
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acpi_handle gpe_device;
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u64 gpe_number;
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u64 sleep_state;
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struct list_head resources;
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struct acpi_device_wakeup_flags flags;
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struct acpi_device_wakeup_context context;
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struct wakeup_source *ws;
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int prepare_count;
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int enable_count;
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};
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struct acpi_device_physical_node {
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unsigned int node_id;
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struct list_head node;
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struct device *dev;
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bool put_online:1;
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};
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struct acpi_device_properties {
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const guid_t *guid;
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const union acpi_object *properties;
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struct list_head list;
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};
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/* ACPI Device Specific Data (_DSD) */
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struct acpi_device_data {
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const union acpi_object *pointer;
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struct list_head properties;
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const union acpi_object *of_compatible;
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struct list_head subnodes;
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};
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struct acpi_gpio_mapping;
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/* Device */
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struct acpi_device {
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int device_type;
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acpi_handle handle; /* no handle for fixed hardware */
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struct fwnode_handle fwnode;
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struct acpi_device *parent;
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struct list_head children;
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struct list_head node;
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struct list_head wakeup_list;
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struct list_head del_list;
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struct acpi_device_status status;
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struct acpi_device_flags flags;
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struct acpi_device_pnp pnp;
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struct acpi_device_power power;
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struct acpi_device_wakeup wakeup;
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struct acpi_device_perf performance;
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struct acpi_device_dir dir;
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struct acpi_device_data data;
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struct acpi_scan_handler *handler;
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struct acpi_hotplug_context *hp;
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struct acpi_driver *driver;
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const struct acpi_gpio_mapping *driver_gpios;
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void *driver_data;
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struct device dev;
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unsigned int physical_node_count;
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unsigned int dep_unmet;
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struct list_head physical_node_list;
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struct mutex physical_node_lock;
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void (*remove)(struct acpi_device *);
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};
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/* Non-device subnode */
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struct acpi_data_node {
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const char *name;
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acpi_handle handle;
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struct fwnode_handle fwnode;
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struct fwnode_handle *parent;
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struct acpi_device_data data;
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struct list_head sibling;
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struct kobject kobj;
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struct completion kobj_done;
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};
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extern const struct fwnode_operations acpi_device_fwnode_ops;
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extern const struct fwnode_operations acpi_data_fwnode_ops;
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extern const struct fwnode_operations acpi_static_fwnode_ops;
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bool is_acpi_device_node(const struct fwnode_handle *fwnode);
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bool is_acpi_data_node(const struct fwnode_handle *fwnode);
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static inline bool is_acpi_node(const struct fwnode_handle *fwnode)
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{
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return (is_acpi_device_node(fwnode) || is_acpi_data_node(fwnode));
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}
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#define to_acpi_device_node(__fwnode) \
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({ \
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typeof(__fwnode) __to_acpi_device_node_fwnode = __fwnode; \
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\
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is_acpi_device_node(__to_acpi_device_node_fwnode) ? \
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container_of(__to_acpi_device_node_fwnode, \
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struct acpi_device, fwnode) : \
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NULL; \
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})
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#define to_acpi_data_node(__fwnode) \
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({ \
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typeof(__fwnode) __to_acpi_data_node_fwnode = __fwnode; \
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\
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is_acpi_data_node(__to_acpi_data_node_fwnode) ? \
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container_of(__to_acpi_data_node_fwnode, \
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struct acpi_data_node, fwnode) : \
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NULL; \
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})
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static inline bool is_acpi_static_node(const struct fwnode_handle *fwnode)
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{
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return !IS_ERR_OR_NULL(fwnode) &&
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fwnode->ops == &acpi_static_fwnode_ops;
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}
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static inline bool acpi_data_node_match(const struct fwnode_handle *fwnode,
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const char *name)
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{
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return is_acpi_data_node(fwnode) ?
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(!strcmp(to_acpi_data_node(fwnode)->name, name)) : false;
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}
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static inline struct fwnode_handle *acpi_fwnode_handle(struct acpi_device *adev)
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{
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return &adev->fwnode;
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}
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static inline void *acpi_driver_data(struct acpi_device *d)
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{
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return d->driver_data;
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}
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#define to_acpi_device(d) container_of(d, struct acpi_device, dev)
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#define to_acpi_driver(d) container_of(d, struct acpi_driver, drv)
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static inline void acpi_set_device_status(struct acpi_device *adev, u32 sta)
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{
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*((u32 *)&adev->status) = sta;
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}
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static inline void acpi_set_hp_context(struct acpi_device *adev,
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struct acpi_hotplug_context *hp)
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{
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hp->self = adev;
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adev->hp = hp;
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}
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void acpi_initialize_hp_context(struct acpi_device *adev,
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struct acpi_hotplug_context *hp,
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int (*notify)(struct acpi_device *, u32),
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void (*uevent)(struct acpi_device *, u32));
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/* acpi_device.dev.bus == &acpi_bus_type */
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extern struct bus_type acpi_bus_type;
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/*
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* Events
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* ------
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*/
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struct acpi_bus_event {
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struct list_head node;
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acpi_device_class device_class;
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acpi_bus_id bus_id;
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u32 type;
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u32 data;
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};
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extern struct kobject *acpi_kobj;
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extern int acpi_bus_generate_netlink_event(const char*, const char*, u8, int);
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void acpi_bus_private_data_handler(acpi_handle, void *);
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int acpi_bus_get_private_data(acpi_handle, void **);
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int acpi_bus_attach_private_data(acpi_handle, void *);
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void acpi_bus_detach_private_data(acpi_handle);
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extern int acpi_notifier_call_chain(struct acpi_device *, u32, u32);
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extern int register_acpi_notifier(struct notifier_block *);
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extern int unregister_acpi_notifier(struct notifier_block *);
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/*
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* External Functions
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*/
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int acpi_bus_get_device(acpi_handle handle, struct acpi_device **device);
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acpi_status acpi_bus_get_status_handle(acpi_handle handle,
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unsigned long long *sta);
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int acpi_bus_get_status(struct acpi_device *device);
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int acpi_bus_set_power(acpi_handle handle, int state);
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const char *acpi_power_state_string(int state);
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int acpi_device_set_power(struct acpi_device *device, int state);
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int acpi_bus_init_power(struct acpi_device *device);
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int acpi_device_fix_up_power(struct acpi_device *device);
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int acpi_bus_update_power(acpi_handle handle, int *state_p);
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int acpi_device_update_power(struct acpi_device *device, int *state_p);
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bool acpi_bus_power_manageable(acpi_handle handle);
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int acpi_device_power_add_dependent(struct acpi_device *adev,
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struct device *dev);
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void acpi_device_power_remove_dependent(struct acpi_device *adev,
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struct device *dev);
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#ifdef CONFIG_PM
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bool acpi_bus_can_wakeup(acpi_handle handle);
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#else
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static inline bool acpi_bus_can_wakeup(acpi_handle handle) { return false; }
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#endif
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void acpi_scan_lock_acquire(void);
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void acpi_scan_lock_release(void);
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void acpi_lock_hp_context(void);
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void acpi_unlock_hp_context(void);
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int acpi_scan_add_handler(struct acpi_scan_handler *handler);
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int acpi_bus_register_driver(struct acpi_driver *driver);
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void acpi_bus_unregister_driver(struct acpi_driver *driver);
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int acpi_bus_scan(acpi_handle handle);
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void acpi_bus_trim(struct acpi_device *start);
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acpi_status acpi_bus_get_ejd(acpi_handle handle, acpi_handle * ejd);
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int acpi_match_device_ids(struct acpi_device *device,
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const struct acpi_device_id *ids);
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void acpi_set_modalias(struct acpi_device *adev, const char *default_id,
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char *modalias, size_t len);
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int acpi_create_dir(struct acpi_device *);
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void acpi_remove_dir(struct acpi_device *);
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static inline bool acpi_device_enumerated(struct acpi_device *adev)
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{
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return adev && adev->flags.initialized && adev->flags.visited;
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}
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/**
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* module_acpi_driver(acpi_driver) - Helper macro for registering an ACPI driver
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* @__acpi_driver: acpi_driver struct
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*
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* Helper macro for ACPI drivers which do not do anything special in module
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* init/exit. This eliminates a lot of boilerplate. Each module may only
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* use this macro once, and calling it replaces module_init() and module_exit()
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*/
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#define module_acpi_driver(__acpi_driver) \
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module_driver(__acpi_driver, acpi_bus_register_driver, \
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acpi_bus_unregister_driver)
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/*
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* Bind physical devices with ACPI devices
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*/
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struct acpi_bus_type {
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struct list_head list;
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const char *name;
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bool (*match)(struct device *dev);
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struct acpi_device * (*find_companion)(struct device *);
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void (*setup)(struct device *);
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void (*cleanup)(struct device *);
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};
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int register_acpi_bus_type(struct acpi_bus_type *);
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int unregister_acpi_bus_type(struct acpi_bus_type *);
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int acpi_bind_one(struct device *dev, struct acpi_device *adev);
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int acpi_unbind_one(struct device *dev);
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struct acpi_pci_root {
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struct acpi_device * device;
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struct pci_bus *bus;
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u16 segment;
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struct resource secondary; /* downstream bus range */
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u32 osc_support_set; /* _OSC state of support bits */
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u32 osc_control_set; /* _OSC state of control bits */
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phys_addr_t mcfg_addr;
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};
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/* helper */
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bool acpi_dma_supported(const struct acpi_device *adev);
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enum dev_dma_attr acpi_get_dma_attr(struct acpi_device *adev);
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int acpi_iommu_fwspec_init(struct device *dev, u32 id,
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struct fwnode_handle *fwnode,
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const struct iommu_ops *ops);
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int acpi_dma_get_range(struct device *dev, u64 *dma_addr, u64 *offset,
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u64 *size);
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int acpi_dma_configure_id(struct device *dev, enum dev_dma_attr attr,
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const u32 *input_id);
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static inline int acpi_dma_configure(struct device *dev,
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enum dev_dma_attr attr)
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{
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return acpi_dma_configure_id(dev, attr, NULL);
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}
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struct acpi_device *acpi_find_child_device(struct acpi_device *parent,
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u64 address, bool check_children);
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int acpi_is_root_bridge(acpi_handle);
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struct acpi_pci_root *acpi_pci_find_root(acpi_handle handle);
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int acpi_enable_wakeup_device_power(struct acpi_device *dev, int state);
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int acpi_disable_wakeup_device_power(struct acpi_device *dev);
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#ifdef CONFIG_X86
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bool acpi_device_always_present(struct acpi_device *adev);
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#else
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static inline bool acpi_device_always_present(struct acpi_device *adev)
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{
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return false;
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}
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#endif
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#ifdef CONFIG_PM
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void acpi_pm_wakeup_event(struct device *dev);
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acpi_status acpi_add_pm_notifier(struct acpi_device *adev, struct device *dev,
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void (*func)(struct acpi_device_wakeup_context *context));
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acpi_status acpi_remove_pm_notifier(struct acpi_device *adev);
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bool acpi_pm_device_can_wakeup(struct device *dev);
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int acpi_pm_device_sleep_state(struct device *, int *, int);
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int acpi_pm_set_device_wakeup(struct device *dev, bool enable);
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#else
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static inline void acpi_pm_wakeup_event(struct device *dev)
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{
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}
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static inline acpi_status acpi_add_pm_notifier(struct acpi_device *adev,
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struct device *dev,
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void (*func)(struct acpi_device_wakeup_context *context))
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|
{
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return AE_SUPPORT;
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}
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static inline acpi_status acpi_remove_pm_notifier(struct acpi_device *adev)
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|
{
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return AE_SUPPORT;
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}
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static inline bool acpi_pm_device_can_wakeup(struct device *dev)
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|
{
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return false;
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}
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static inline int acpi_pm_device_sleep_state(struct device *d, int *p, int m)
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|
{
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if (p)
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*p = ACPI_STATE_D0;
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return (m >= ACPI_STATE_D0 && m <= ACPI_STATE_D3_COLD) ?
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m : ACPI_STATE_D0;
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}
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static inline int acpi_pm_set_device_wakeup(struct device *dev, bool enable)
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{
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return -ENODEV;
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}
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#endif
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#ifdef CONFIG_ACPI_SYSTEM_POWER_STATES_SUPPORT
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bool acpi_sleep_state_supported(u8 sleep_state);
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#else
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static inline bool acpi_sleep_state_supported(u8 sleep_state) { return false; }
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#endif
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|
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#ifdef CONFIG_ACPI_SLEEP
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u32 acpi_target_system_state(void);
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#else
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static inline u32 acpi_target_system_state(void) { return ACPI_STATE_S0; }
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#endif
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|
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static inline bool acpi_device_power_manageable(struct acpi_device *adev)
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|
{
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return adev->flags.power_manageable;
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}
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static inline bool acpi_device_can_wakeup(struct acpi_device *adev)
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|
{
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return adev->wakeup.flags.valid;
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}
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|
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static inline bool acpi_device_can_poweroff(struct acpi_device *adev)
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|
{
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|
return adev->power.states[ACPI_STATE_D3_COLD].flags.valid ||
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((acpi_gbl_FADT.header.revision < 6) &&
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adev->power.states[ACPI_STATE_D3_HOT].flags.explicit_set);
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}
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|
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bool acpi_dev_hid_uid_match(struct acpi_device *adev, const char *hid2, const char *uid2);
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|
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void acpi_dev_clear_dependencies(struct acpi_device *supplier);
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struct acpi_device *acpi_dev_get_first_consumer_dev(struct acpi_device *supplier);
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|
struct acpi_device *
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acpi_dev_get_next_match_dev(struct acpi_device *adev, const char *hid, const char *uid, s64 hrv);
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|
struct acpi_device *
|
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acpi_dev_get_first_match_dev(const char *hid, const char *uid, s64 hrv);
|
|
|
|
/**
|
|
* for_each_acpi_dev_match - iterate over ACPI devices that matching the criteria
|
|
* @adev: pointer to the matching ACPI device, NULL at the end of the loop
|
|
* @hid: Hardware ID of the device.
|
|
* @uid: Unique ID of the device, pass NULL to not check _UID
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|
* @hrv: Hardware Revision of the device, pass -1 to not check _HRV
|
|
*
|
|
* The caller is responsible for invoking acpi_dev_put() on the returned device.
|
|
*/
|
|
#define for_each_acpi_dev_match(adev, hid, uid, hrv) \
|
|
for (adev = acpi_dev_get_first_match_dev(hid, uid, hrv); \
|
|
adev; \
|
|
adev = acpi_dev_get_next_match_dev(adev, hid, uid, hrv))
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|
|
|
static inline struct acpi_device *acpi_dev_get(struct acpi_device *adev)
|
|
{
|
|
return adev ? to_acpi_device(get_device(&adev->dev)) : NULL;
|
|
}
|
|
|
|
static inline void acpi_dev_put(struct acpi_device *adev)
|
|
{
|
|
if (adev)
|
|
put_device(&adev->dev);
|
|
}
|
|
|
|
struct acpi_device *acpi_bus_get_acpi_device(acpi_handle handle);
|
|
|
|
static inline void acpi_bus_put_acpi_device(struct acpi_device *adev)
|
|
{
|
|
acpi_dev_put(adev);
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|
}
|
|
#else /* CONFIG_ACPI */
|
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|
|
static inline int register_acpi_bus_type(void *bus) { return 0; }
|
|
static inline int unregister_acpi_bus_type(void *bus) { return 0; }
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|
|
#endif /* CONFIG_ACPI */
|
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|
|
#endif /*__ACPI_BUS_H__*/
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