PM / Domains: Silence compiler warning for an unused function

The only remaining caller of genpd_poweron() is conditionally compiled
based on CONFIG_PM_GENERIC_DOMAINS_OF, so we get a warning when that is
unset.

By moving the locking/unlocking of the genpd outside genpd_poweron(), thus
to the caller, genpd_poweron() becomes redundant.

Within this context let's then rename the wrapper function,
__genpd_poweron(), to genpd_poweron() as it will then be consistent with
its friend genpd_poweroff().

This change silence the warning about the unused function.

Reported-by: Arnd Bergmann <arnd@arndb.de>
Fixes: ea823c7cbffa "PM / Domains: Remove pm_genpd_poweron() API"
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Cc: 4.4+ <stable@vger.kernel.org> # 4.4+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c
index 784dbe8..301b785 100644 (file)
--- a/drivers/base/power/domain.c
+++ b/drivers/base/power/domain.c
@@ -173,14 +173,14 @@ static void genpd_queue_power_off_work(struct generic_pm_domain *genpd)
 }
 
 /**
- * __genpd_poweron - Restore power to a given PM domain and its masters.
+ * genpd_poweron - Restore power to a given PM domain and its masters.
  * @genpd: PM domain to power up.
  * @depth: nesting count for lockdep.
  *
  * Restore power to @genpd and all of its masters so that it is possible to
  * resume a device belonging to it.
  */
-static int __genpd_poweron(struct generic_pm_domain *genpd, unsigned int depth)
+static int genpd_poweron(struct generic_pm_domain *genpd, unsigned int depth)
 {
        struct gpd_link *link;
        int ret = 0;
@@ -200,7 +200,7 @@ static int __genpd_poweron(struct generic_pm_domain *genpd, unsigned int depth)
                genpd_sd_counter_inc(master);
 
                mutex_lock_nested(&master->lock, depth + 1);
-               ret = __genpd_poweron(master, depth + 1);
+               ret = genpd_poweron(master, depth + 1);
                mutex_unlock(&master->lock);
 
                if (ret) {
@@ -227,21 +227,6 @@ static int __genpd_poweron(struct generic_pm_domain *genpd, unsigned int depth)
        return ret;
 }
 
-/**
- * genpd_poweron - Restore power to a given PM domain and its masters.
- * @genpd: PM domain to power up.
- */
-static int genpd_poweron(struct generic_pm_domain *genpd)
-{
-       int ret;
-
-       mutex_lock(&genpd->lock);
-       ret = __genpd_poweron(genpd, 0);
-       mutex_unlock(&genpd->lock);
-       return ret;
-}
-
-
 static int genpd_save_dev(struct generic_pm_domain *genpd, struct device *dev)
 {
        return GENPD_DEV_CALLBACK(genpd, int, save_state, dev);
@@ -489,7 +474,7 @@ static int pm_genpd_runtime_resume(struct device *dev)
        }
 
        mutex_lock(&genpd->lock);
-       ret = __genpd_poweron(genpd, 0);
+       ret = genpd_poweron(genpd, 0);
        mutex_unlock(&genpd->lock);
 
        if (ret)
@@ -1821,8 +1806,10 @@ int genpd_dev_pm_attach(struct device *dev)
 
        dev->pm_domain->detach = genpd_dev_pm_detach;
        dev->pm_domain->sync = genpd_dev_pm_sync;
-       ret = genpd_poweron(pd);
 
+       mutex_lock(&pd->lock);
+       ret = genpd_poweron(pd, 0);
+       mutex_unlock(&pd->lock);
 out:
        return ret ? -EPROBE_DEFER : 0;
 }