[PATCH 14/18] soundwire: bus: disable pm_runtime in sdw_slave_delete

From: Pierre-Louis Bossart
Date: Wed Oct 23 2019 - 17:46:45 EST


Before removing the slave device, disable pm_runtime to prevent any
race condition with the resume being executed after the bus and slave
devices are removed.

Since this pm_runtime_disable() is handled in common routines,
implementations of Slave drivers do not need to call it in their
.remove() routine.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@xxxxxxxxxxxxxxx>
---
drivers/soundwire/bus.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/drivers/soundwire/bus.c b/drivers/soundwire/bus.c
index b18110726273..3b99521aa0c0 100644
--- a/drivers/soundwire/bus.c
+++ b/drivers/soundwire/bus.c
@@ -113,6 +113,8 @@ static int sdw_delete_slave(struct device *dev, void *data)
struct sdw_slave *slave = to_sdw_slave_device(dev);
struct sdw_bus *bus = slave->bus;

+ pm_runtime_disable(dev);
+
sdw_slave_debugfs_exit(slave);

mutex_lock(&bus->bus_lock);
--
2.20.1