1 files changed, 17 insertions, 10 deletions

diff --git a/drivers/soundwire/bus.c b/drivers/soundwire/bus.c
index 354d3f89366f..a2bfb0434a67 100644
--- a/drivers/soundwire/bus.c
+++ b/drivers/soundwire/bus.c
@@ -536,11 +536,9 @@ int sdw_nread(struct sdw_slave *slave, u32 addr, size_t count, u8 *val)
 {
 	int ret;
 
-	ret = pm_runtime_get_sync(&slave->dev);
-	if (ret < 0 && ret != -EACCES) {
-		pm_runtime_put_noidle(&slave->dev);
+	ret = pm_runtime_resume_and_get(&slave->dev);
+	if (ret < 0 && ret != -EACCES)
 		return ret;
-	}
 
 	ret = sdw_nread_no_pm(slave, addr, count, val);
 
@@ -562,11 +560,9 @@ int sdw_nwrite(struct sdw_slave *slave, u32 addr, size_t count, const u8 *val)
 {
 	int ret;
 
-	ret = pm_runtime_get_sync(&slave->dev);
-	if (ret < 0 && ret != -EACCES) {
-		pm_runtime_put_noidle(&slave->dev);
+	ret = pm_runtime_resume_and_get(&slave->dev);
+	if (ret < 0 && ret != -EACCES)
 		return ret;
-	}
 
 	ret = sdw_nwrite_no_pm(slave, addr, count, val);
 
@@ -1506,10 +1502,9 @@ static int sdw_handle_slave_alerts(struct sdw_slave *slave)
 
 	sdw_modify_slave_status(slave, SDW_SLAVE_ALERT);
 
-	ret = pm_runtime_get_sync(&slave->dev);
+	ret = pm_runtime_resume_and_get(&slave->dev);
 	if (ret < 0 && ret != -EACCES) {
 		dev_err(&slave->dev, "Failed to resume device: %d\n", ret);
-		pm_runtime_put_noidle(&slave->dev);
 		return ret;
 	}
 
@@ -1838,6 +1833,18 @@ int sdw_handle_slave_status(struct sdw_bus *bus,
 				__func__, slave->dev_num);
 
 			complete(&slave->initialization_complete);
+
+			/*
+			 * If the manager became pm_runtime active, the peripherals will be
+			 * restarted and attach, but their pm_runtime status may remain
+			 * suspended. If the 'update_slave_status' callback initiates
+			 * any sort of deferred processing, this processing would not be
+			 * cancelled on pm_runtime suspend.
+			 * To avoid such zombie states, we queue a request to resume.
+			 * This would be a no-op in case the peripheral was being resumed
+			 * by e.g. the ALSA/ASoC framework.
+			 */
+			pm_request_resume(&slave->dev);
 		}
 	}