From 99926a8cd36b6088448fec41aed4a3b5b05b3679 Mon Sep 17 00:00:00 2001 From: David Rientjes Date: Sat, 10 Nov 2012 22:48:33 +0100 Subject: [PATCH] ACPI / PM: Fix build problem related to acpi_target_system_state() Commit b87b49cd0efd ("ACPI / PM: Move device PM functions related to sleep states") declared acpi_target_system_state() for CONFIG_PM_SLEEP whereas it is only defined for CONFIG_ACPI_SLEEP, resulting in the following link error: drivers/built-in.o: In function `acpi_pm_device_sleep_wake': drivers/acpi/device_pm.c:342: undefined reference to `acpi_target_system_state' drivers/built-in.o: In function `acpi_dev_suspend_late': drivers/acpi/device_pm.c:501: undefined reference to `acpi_target_system_state' drivers/built-in.o: In function `acpi_pm_device_sleep_state': drivers/acpi/device_pm.c:221: undefined reference to `acpi_target_system_state' Define it only for CONFIG_ACPI_SLEEP and fallback to a dummy definition for other configs. [rjw: The problem only occurs for exotic .configs in which HIBERNATE_CALLBACKS is selected by XEN_SAVE_RESTORE and neither SUSPEND nor HIBERNATION is set.] Signed-off-by: David Rientjes Signed-off-by: Rafael J. Wysocki --- include/acpi/acpi_bus.h | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h index bf8709a1844d..80155fda517f 100644 --- a/include/acpi/acpi_bus.h +++ b/include/acpi/acpi_bus.h @@ -470,11 +470,9 @@ static inline int acpi_pm_device_run_wake(struct device *dev, bool enable) #endif #ifdef CONFIG_PM_SLEEP -u32 acpi_target_system_state(void); int __acpi_device_sleep_wake(struct acpi_device *, u32, bool); int acpi_pm_device_sleep_wake(struct device *, bool); #else -static inline u32 acpi_target_system_state(void) { return ACPI_STATE_S0; } static inline int __acpi_device_sleep_wake(struct acpi_device *adev, u32 target_state, bool enable) { @@ -486,6 +484,12 @@ static inline int acpi_pm_device_sleep_wake(struct device *dev, bool enable) } #endif +#ifdef CONFIG_ACPI_SLEEP +u32 acpi_target_system_state(void); +#else +static inline u32 acpi_target_system_state(void) { return ACPI_STATE_S0; } +#endif + static inline bool acpi_device_power_manageable(struct acpi_device *adev) { return adev->flags.power_manageable;