[PATCH 12/18] tty: serial: samsung: use TIOCSER_TEMT for tx_empty()

Tudor Ambarus
2024-01-10T10:22:07Z

The core expects for tx_empty() either TIOCSER_TEMT when the tx is
empty or 0 otherwise. Respect the core and use TIOCSER_TEMT.

Signed-off-by: Tudor Ambarus <tudor.ambarus@linaro.org>
---
drivers/tty/serial/samsung_tty.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/tty/serial/samsung_tty.c b/drivers/tty/serial/samsung_tty.c
index f2413da14b1d..46fba70f3d77 100644
--- a/drivers/tty/serial/samsung_tty.c
+++ b/drivers/tty/serial/samsung_tty.c
@@ -990,11 +990,10 @@ static unsigned int s3c24xx_serial_tx_empty(struct uart_port *port)
if (ufcon & S3C2410_UFCON_FIFOMODE) {
if ((ufstat & info->tx_fifomask) || (ufstat & info->tx_fifofull))
return 0;
-
- return 1;
+ return TIOCSER_TEMT;
}

- return s3c24xx_serial_txempty_nofifo(port);
+ return s3c24xx_serial_txempty_nofifo(port) ? TIOCSER_TEMT : 0;
}

/* no modem control lines */
--
2.43.0.472.g3155946c3a-goog