PM / Domains: Implement the ->start() callback for genpd

To allow a subsystem/driver to explicitly start its device from genpd's
point view, let's implement the ->start() callback in the struct
dev_pm_domain that corresponds to the genpd.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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 cc85e87eaf05559ecbe5c0279d9b8f134a7bf880..2adf0661fa3ee017ad786ebcf4d0b0acf68c1f23 100644 (file)
--- a/drivers/base/power/domain.c
+++ b/drivers/base/power/domain.c
@@ -634,6 +634,13 @@ static int genpd_power_on(struct generic_pm_domain *genpd, unsigned int depth)
        return ret;
 }
 
+static int genpd_dev_pm_start(struct device *dev)
+{
+       struct generic_pm_domain *genpd = dev_to_genpd(dev);
+
+       return genpd_start_dev(genpd, dev);
+}
+
 static int genpd_dev_pm_qos_notifier(struct notifier_block *nb,
                                     unsigned long val, void *ptr)
 {
@@ -1805,6 +1812,7 @@ int pm_genpd_init(struct generic_pm_domain *genpd,
        genpd->domain.ops.poweroff_noirq = genpd_poweroff_noirq;
        genpd->domain.ops.restore_noirq = genpd_restore_noirq;
        genpd->domain.ops.complete = genpd_complete;
+       genpd->domain.start = genpd_dev_pm_start;
 
        if (genpd->flags & GENPD_FLAG_PM_CLK) {
                genpd->dev_ops.stop = pm_clk_suspend;