[PATCH -next] soundwire: intel: Fix -Wunused-function warning

[YueHaibing]

If CONFIG_PM is not set, build warns:

drivers/soundwire/intel.c:488:12: warning: 'intel_link_power_down' defined but not used [-Wunused-function]

Mark the functions __maybe_unused and remove the CONFIG_PM dependency.

Signed-off-by: YueHaibing <yuehaibing at huawei.com>
---
 drivers/soundwire/intel.c | 12 ++++--------
 1 file changed, 4 insertions(+), 8 deletions(-)

diff --git a/drivers/soundwire/intel.c b/drivers/soundwire/intel.c
index e047910d73f5..48ae8800594a 100644
--- a/drivers/soundwire/intel.c
+++ b/drivers/soundwire/intel.c
@@ -400,7 +400,7 @@ static void intel_shim_glue_to_master_ip(struct sdw_intel *sdw)
 }
 
 /* this needs to be called with shim_lock */
-static void intel_shim_master_ip_to_glue(struct sdw_intel *sdw)
+static void __maybe_unused intel_shim_master_ip_to_glue(struct sdw_intel *sdw)
 {
 	unsigned int link_id = sdw->instance;
 	void __iomem *shim = sdw->link_res->shim;
@@ -485,7 +485,7 @@ static void intel_shim_wake(struct sdw_intel *sdw, bool wake_enable)
 	mutex_unlock(sdw->link_res->shim_lock);
 }
 
-static int intel_link_power_down(struct sdw_intel *sdw)
+static int __maybe_unused intel_link_power_down(struct sdw_intel *sdw)
 {
 	u32 link_control, spa_mask, cpa_mask;
 	unsigned int link_id = sdw->instance;
@@ -1540,8 +1540,6 @@ int intel_master_process_wakeen_event(struct platform_device *pdev)
  * PM calls
  */
 
-#ifdef CONFIG_PM
-
 static int __maybe_unused intel_suspend(struct device *dev)
 {
 	struct sdw_cdns *cdns = dev_get_drvdata(dev);
@@ -1596,7 +1594,7 @@ static int __maybe_unused intel_suspend(struct device *dev)
 	return 0;
 }
 
-static int intel_suspend_runtime(struct device *dev)
+static int __maybe_unused intel_suspend_runtime(struct device *dev)
 {
 	struct sdw_cdns *cdns = dev_get_drvdata(dev);
 	struct sdw_intel *sdw = cdns_to_intel(cdns);
@@ -1751,7 +1749,7 @@ static int __maybe_unused intel_resume(struct device *dev)
 	return ret;
 }
 
-static int intel_resume_runtime(struct device *dev)
+static int __maybe_unused intel_resume_runtime(struct device *dev)
 {
 	struct sdw_cdns *cdns = dev_get_drvdata(dev);
 	struct sdw_intel *sdw = cdns_to_intel(cdns);
@@ -1924,8 +1922,6 @@ static int intel_resume_runtime(struct device *dev)
 	return ret;
 }
 
-#endif
-
 static const struct dev_pm_ops intel_pm = {
 	SET_SYSTEM_SLEEP_PM_OPS(intel_suspend, intel_resume)
 	SET_RUNTIME_PM_OPS(intel_suspend_runtime, intel_resume_runtime, NULL)
-- 
2.17.1