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-rw-r--r--drivers/tty/serial/serial_core.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c
index ca26a8aef2cb..d5ba6e90bd95 100644
--- a/drivers/tty/serial/serial_core.c
+++ b/drivers/tty/serial/serial_core.c
@@ -156,7 +156,7 @@ static void __uart_start(struct uart_state *state)
* enabled, serial_port_runtime_resume() calls start_tx() again
* after enabling the device.
*/
- if (pm_runtime_active(&port_dev->dev))
+ if (!pm_runtime_enabled(port->dev) || pm_runtime_active(port->dev))
port->ops->start_tx(port);
pm_runtime_mark_last_busy(&port_dev->dev);
pm_runtime_put_autosuspend(&port_dev->dev);