[PATCH v3 03/14] serial: liteuart: remove unused uart_ops stubs

Gabriel Somlo
2022-11-12T21:21:48Z

Remove stub uart_ops methods that are not called unconditionally
from serial_core. Document stubs that are expected to be present.

Signed-off-by: Gabriel Somlo <gsomlo@gmail.com>
---
drivers/tty/serial/liteuart.c | 18 +-----------------
1 file changed, 1 insertion(+), 17 deletions(-)

diff --git a/drivers/tty/serial/liteuart.c b/drivers/tty/serial/liteuart.c
index 1497d4cdc221..90f6280c5452 100644
--- a/drivers/tty/serial/liteuart.c
+++ b/drivers/tty/serial/liteuart.c
@@ -122,6 +122,7 @@ static unsigned int liteuart_get_mctrl(struct uart_port *port)

static void liteuart_stop_tx(struct uart_port *port)
{
+ /* not used in LiteUART, but called unconditionally from serial_core */
}

static void liteuart_start_tx(struct uart_port *port)
@@ -154,11 +155,6 @@ static void liteuart_stop_rx(struct uart_port *port)
del_timer(&uart->timer);
}

-static void liteuart_break_ctl(struct uart_port *port, int break_state)
-{
- /* LiteUART doesn't support sending break signal */
-}
-
static int liteuart_startup(struct uart_port *port)
{
struct liteuart_port *uart = to_liteuart_port(port);
@@ -197,15 +193,6 @@ static const char *liteuart_type(struct uart_port *port)
return "liteuart";
}

-static void liteuart_release_port(struct uart_port *port)
-{
-}
-
-static int liteuart_request_port(struct uart_port *port)
-{
- return 0;
-}
-
static void liteuart_config_port(struct uart_port *port, int flags)
{
/*
@@ -232,13 +219,10 @@ static const struct uart_ops liteuart_ops = {
.stop_tx = liteuart_stop_tx,
.start_tx = liteuart_start_tx,
.stop_rx = liteuart_stop_rx,
- .break_ctl = liteuart_break_ctl,
.startup = liteuart_startup,
.shutdown = liteuart_shutdown,
.set_termios = liteuart_set_termios,
.type = liteuart_type,
- .release_port = liteuart_release_port,
- .request_port = liteuart_request_port,
.config_port = liteuart_config_port,
.verify_port = liteuart_verify_port,
};
--
2.37.3