Hi,
* Nick Bowler <[email protected]> [240322 04:29]:
> I bisected to this commit:
>
> commit 45a3a8ef81291b63a2b50a1a145857dd9fc05e89
> Author: Tony Lindgren <[email protected]>
> Date: Mon Nov 13 10:07:53 2023 +0200
>
> serial: core: Revert checks for tx runtime PM state
>
> Reverting this commit on top of Linux 6.8 is sufficient to get the
> system booting again.
Thanks a lot for bisecting and reporting the issue.
Can you please test if the following change to add back the check for
!pm_runtime_active() is enough to fix the issue?
Regards,
Tony
8< -----------------------
diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c
--- 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->dev) || pm_runtime_active(&port_dev->dev))
port->ops->start_tx(port);
pm_runtime_mark_last_busy(&port_dev->dev);
pm_runtime_put_autosuspend(&port_dev->dev);
--
2.44.0