[PATCH 2/3] i3c: master: Add missing runtime PM get in dev_nack_retry_count_store()

[Adrian Hunter]

Ensure the device is runtime resumed while updating the retry
configuration to avoid accessing the controller while suspended.

Call i3c_master_rpm_get() before accessing the controller in
dev_nack_retry_count_store() and release it with
i3c_master_rpm_put() afterwards.

Fixes: 990c149c61ee4 ("i3c: master: Introduce optional Runtime PM support")
Signed-off-by: Adrian Hunter <adrian.hunter at intel.com>
---
 drivers/i3c/master.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/i3c/master.c b/drivers/i3c/master.c
index 66cf5d3bd987..903ac01ab413 100644
--- a/drivers/i3c/master.c
+++ b/drivers/i3c/master.c
@@ -767,12 +767,18 @@ static ssize_t dev_nack_retry_count_store(struct device *dev,
 	if (ret)
 		return ret;
 
+	ret = i3c_master_rpm_get(master);
+	if (ret)
+		return ret;
+
 	i3c_bus_maintenance_lock(i3cbus);
 	ret = master->ops->set_dev_nack_retry(master, val);
 	if (!ret)
 		master->dev_nack_retry_count = val;
 	i3c_bus_maintenance_unlock(i3cbus);
 
+	i3c_master_rpm_put(master);
+
 	return ret ?: count;
 }
 
-- 
2.51.0