[alsa-devel] [PATCH 3/4] soundwire: bus: check if pm runtime is enabled before calling

[Srinivas Kandagatla]

Check the device has pm runtime enabled before returning error.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla at linaro.org>
---
 drivers/soundwire/bus.c | 16 ++++++++++------
 1 file changed, 10 insertions(+), 6 deletions(-)

diff --git a/drivers/soundwire/bus.c b/drivers/soundwire/bus.c
index 1cbfedfc20ef..101562a6fb0d 100644
--- a/drivers/soundwire/bus.c
+++ b/drivers/soundwire/bus.c
@@ -327,9 +327,11 @@ int sdw_nread(struct sdw_slave *slave, u32 addr, size_t count, u8 *val)
 	if (ret < 0)
 		return ret;
 
-	ret = pm_runtime_get_sync(slave->bus->dev);
-	if (ret < 0)
-		return ret;
+	if (pm_runtime_enabled(slave->bus->dev)) {
+		ret = pm_runtime_get_sync(slave->bus->dev);
+		if (ret < 0)
+			return ret;
+	}
 
 	ret = sdw_transfer(slave->bus, &msg);
 	pm_runtime_put(slave->bus->dev);
@@ -355,9 +357,11 @@ int sdw_nwrite(struct sdw_slave *slave, u32 addr, size_t count, u8 *val)
 	if (ret < 0)
 		return ret;
 
-	ret = pm_runtime_get_sync(slave->bus->dev);
-	if (ret < 0)
-		return ret;
+	if (pm_runtime_enabled(slave->bus->dev)) {
+		ret = pm_runtime_get_sync(slave->bus->dev);
+		if (ret < 0)
+			return ret;
+	}
 
 	ret = sdw_transfer(slave->bus, &msg);
 	pm_runtime_put(slave->bus->dev);
-- 
2.21.0