1#ifndef ACPI_BUTTON_H
 2#define ACPI_BUTTON_H
 3
 4#include <linux/notifier.h>
 5
 6#if defined(CONFIG_ACPI_BUTTON) || defined(CONFIG_ACPI_BUTTON_MODULE)
 7extern int acpi_lid_notifier_register(struct notifier_block *nb);
 8extern int acpi_lid_notifier_unregister(struct notifier_block *nb);
 9extern int acpi_lid_open(void);
10#else
11static inline int acpi_lid_notifier_register(struct notifier_block *nb)
12{
13	return 0;
14}
15static inline int acpi_lid_notifier_unregister(struct notifier_block *nb)
16{
17	return 0;
18}
19static inline int acpi_lid_open(void)
20{
21	return 1;
22}
23#endif /* defined(CONFIG_ACPI_BUTTON) || defined(CONFIG_ACPI_BUTTON_MODULE) */
24
25#endif /* ACPI_BUTTON_H */

 1#ifndef ACPI_BUTTON_H
 2#define ACPI_BUTTON_H
 3
 4#include <linux/notifier.h>
 5
 6#if IS_ENABLED(CONFIG_ACPI_BUTTON)
 7extern int acpi_lid_notifier_register(struct notifier_block *nb);
 8extern int acpi_lid_notifier_unregister(struct notifier_block *nb);
 9extern int acpi_lid_open(void);
10#else
11static inline int acpi_lid_notifier_register(struct notifier_block *nb)
12{
13	return 0;
14}
15static inline int acpi_lid_notifier_unregister(struct notifier_block *nb)
16{
17	return 0;
18}
19static inline int acpi_lid_open(void)
20{
21	return 1;
22}
23#endif /* IS_ENABLED(CONFIG_ACPI_BUTTON) */
24
25#endif /* ACPI_BUTTON_H */