Commit 45a3a8ef authored by Tony Lindgren's avatar Tony Lindgren Committed by Greg Kroah-Hartman
Browse files

serial: core: Revert checks for tx runtime PM state 



This reverts commit 81a61051.

With tty and serdev controller moved to be children of the serial core
port device, runtime PM usage count of the serdev controller now
propagates to the serial hardware controller parent device as expected.

Cc: Maximilian Luz <luzmaximilian@gmail.com>
Cc: Rob Herring <robh@kernel.org>
Signed-off-by: default avatarTony Lindgren <tony@atomide.com>
Reviewed-by: default avatarAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20231113080758.30346-2-tony@atomide.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent b286f4e8

drivers/tty/serial/serial_core.c

+1 −1
Original line number Diff line number Diff line
@@ -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_enabled(port->dev) || pm_runtime_active(port->dev))

	if (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);