PM / Domains: Skip governor functions for CONFIG_PM_RUNTIME unset

The governor functions in drivers/base/power/domain_governor.c
are only used if CONFIG_PM_RUNTIME is set and they refer to data
structures that are only present in that case.  For this reason,
they shouldn't be compiled at all when CONFIG_PM_RUNTIME is not set.

Reported-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>

1 files changed, 19 insertions, 5 deletions

diff --git a/drivers/base/power/domain_governor.c b/drivers/base/power/domain_governor.c
index 51527ee92d10..66a265bf5867 100644
--- a/drivers/base/power/domain_governor.c
+++ b/drivers/base/power/domain_governor.c
@@ -12,6 +12,8 @@
 #include <linux/pm_qos.h>
 #include <linux/hrtimer.h>
 
+#ifdef CONFIG_PM_RUNTIME
+
 /**
  * default_stop_ok - Default PM domain governor routine for stopping devices.
  * @dev: Device to check.
@@ -137,16 +139,28 @@ static bool default_power_down_ok(struct dev_pm_domain *pd)
         return true;
 }
 
-struct dev_power_governor simple_qos_governor = {
-        .stop_ok = default_stop_ok,
-        .power_down_ok = default_power_down_ok,
-};
-
 static bool always_on_power_down_ok(struct dev_pm_domain *domain)
 {
         return false;
 }
 
+#else /* !CONFIG_PM_RUNTIME */
+
+bool default_stop_ok(struct device *dev)
+{
+        return false;
+}
+
+#define default_power_down_ok   NULL
+#define always_on_power_down_ok NULL
+
+#endif /* !CONFIG_PM_RUNTIME */
+
+struct dev_power_governor simple_qos_governor = {
+        .stop_ok = default_stop_ok,
+        .power_down_ok = default_power_down_ok,
+};
+
 /**
  * pm_genpd_gov_always_on - A governor implementing an always-on policy
  */