Everytime we're done using our TTY, we want
the pm timer to be reinitilized. By sticking
to pm_runtime_pm_autosuspend() we make sure
that this will always be the case.

Signed-off-by: Felipe Balbi <redacted>
---
 drivers/tty/serial/omap-serial.c | 33 ++++++++++++++++++++++-----------
 1 file changed, 22 insertions(+), 11 deletions(-)

diff --git a/drivers/tty/serial/omap-serial.c b/drivers/tty/serial/omap-serial.c
index 6ea24c5..458d77c 100644
--- a/drivers/tty/serial/omap-serial.c
+++ b/drivers/tty/serial/omap-serial.c

@@ -164,7 +164,8 @@ static void serial_omap_enable_ms(struct uart_port *port)
        pm_runtime_get_sync(up->dev);
        up->ier |= UART_IER_MSI;
        serial_out(up, UART_IER, up->ier);
-       pm_runtime_put(up->dev);
+       pm_runtime_mark_last_busy(up->dev);
+       pm_runtime_put_autosuspend(up->dev);
 }