acpi_sleep_state_supported() is defined only when CONFIG_ACPI=y. The function is in acpi_bus.h, and acpi_bus.h can only be used in CONFIG_ACPI=y cases. Add the stub function to linux/acpi.h to make compilation successful for !CONFIG_ACPI cases. Signed-off-by: Saurabh Sengar <ssengar@xxxxxxxxxxxxxxxxxxx> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx> --- include/linux/acpi.h | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/include/linux/acpi.h b/include/linux/acpi.h index efff750f326d..d331f76b0c19 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -1075,6 +1075,11 @@ static inline u32 acpi_osc_ctx_get_cxl_control(struct acpi_osc_context *context) return 0; } +static inline bool acpi_sleep_state_supported(u8 sleep_state) +{ + return false; +} + #endif /* !CONFIG_ACPI */ #ifdef CONFIG_ACPI_HOTPLUG_IOAPIC -- 2.34.1