From bd84256e86ecfb117d80c52870f4ece744610c97 Mon Sep 17 00:00:00 2001 From: Bard Liao Date: Mon, 27 Jul 2020 05:59:45 +0800 Subject: [PATCH] soundwire: master: enable pm runtime The hierarchy of soundwire devices is platform device -> M device -> S device. A S device is physically attached on the platform device. So the platform device should be resumed when a S device is resumed. As the bridge of platform device and S device, we have to implement runtime pm on M driver. We have set runtime pm ops in M driver already, but still need to enable runtime pm. Signed-off-by: Bard Liao Link: https://lore.kernel.org/r/20200726215945.3119-1-yung-chuan.liao@linux.intel.com Signed-off-by: Vinod Koul --- drivers/soundwire/master.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/soundwire/master.c b/drivers/soundwire/master.c index 5f0b2189defe..3488bb824e84 100644 --- a/drivers/soundwire/master.c +++ b/drivers/soundwire/master.c @@ -154,6 +154,7 @@ int sdw_master_device_add(struct sdw_bus *bus, struct device *parent, bus->dev = &md->dev; bus->md = md; + pm_runtime_enable(&bus->md->dev); device_register_err: return ret; } @@ -166,6 +167,7 @@ device_register_err: */ int sdw_master_device_del(struct sdw_bus *bus) { + pm_runtime_disable(&bus->md->dev); device_unregister(bus->dev); return 0;