[v3,1/2] ACPI: Add missing prototype for non CONFIG_SUSPEND/CONFIG_X86 case

Commit Message

Mario Limonciello Feb. 27, 2025, 8:50 p.m. UTC

From: Mario Limonciello <[e-mail]>

acpi_register_lps0_dev() and acpi_unregister_lps0_dev() may be used
in drivers that don't require CONFIG_SUSPEND or compile on !X86.

Add prototypes for those cases.

Reported-by: kernel test robot <[e-mail]>
Closes: https://lore.kernel.org/oe-kbuild-all/[e-mail]/
Signed-off-by: Mario Limonciello <[e-mail]>
---
v3:
 * Add struct acpi_s2idle_dev_ops outside defines too
---
 include/linux/acpi.h | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

Patch

diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index 4e495b29c640f..8d2abe5dede93 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -1115,13 +1115,13 @@  void acpi_os_set_prepare_extended_sleep(int (*func)(u8 sleep_state,
 
 acpi_status acpi_os_prepare_extended_sleep(u8 sleep_state,
 					   u32 val_a, u32 val_b);
-#if defined(CONFIG_SUSPEND) && defined(CONFIG_X86)
 struct acpi_s2idle_dev_ops {
 	struct list_head list_node;
 	void (*prepare)(void);
 	void (*check)(void);
 	void (*restore)(void);
 };
+#if defined(CONFIG_SUSPEND) && defined(CONFIG_X86)
 int acpi_register_lps0_dev(struct acpi_s2idle_dev_ops *arg);
 void acpi_unregister_lps0_dev(struct acpi_s2idle_dev_ops *arg);
 int acpi_get_lps0_constraint(struct acpi_device *adev);
@@ -1130,6 +1130,13 @@  static inline int acpi_get_lps0_constraint(struct device *dev)
 {
 	return ACPI_STATE_UNKNOWN;
 }
+static inline int acpi_register_lps0_dev(struct acpi_s2idle_dev_ops *arg)
+{
+	return -ENODEV;
+}
+static inline void acpi_unregister_lps0_dev(struct acpi_s2idle_dev_ops *arg)
+{
+}
 #endif /* CONFIG_SUSPEND && CONFIG_X86 */
 void arch_reserve_mem_area(acpi_physical_address addr, size_t size);
 #else