serial: pass state to __uart_start() directly

__uart_start() does not need a tty struct. It works only with
uart_state. So pass the latter directly.

Signed-off-by: Jiri Slaby (SUSE) <jirislaby@kernel.org>
Link: https://lore.kernel.org/r/20230712081811.29004-8-jirislaby@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c
index bef507c..306ea1a 100644 (file)
--- a/drivers/tty/serial/serial_core.c
+++ b/drivers/tty/serial/serial_core.c
@@ -133,9 +133,8 @@ static void uart_stop(struct tty_struct *tty)
        uart_port_unlock(port, flags);
 }
 
-static void __uart_start(struct tty_struct *tty)
+static void __uart_start(struct uart_state *state)
 {
-       struct uart_state *state = tty->driver_data;
        struct uart_port *port = state->uart_port;
        struct serial_port_device *port_dev;
        int err;
@@ -170,7 +169,7 @@ static void uart_start(struct tty_struct *tty)
        unsigned long flags;
 
        port = uart_port_lock(state, flags);
-       __uart_start(tty);
+       __uart_start(state);
        uart_port_unlock(port, flags);
 }
 
@@ -239,7 +238,7 @@ static void uart_change_line_settings(struct tty_struct *tty, struct uart_state
                if (!old_hw_stopped)
                        uport->ops->stop_tx(uport);
                else
-                       __uart_start(tty);
+                       __uart_start(state);
        }
        spin_unlock_irq(&uport->lock);
 }
@@ -619,7 +618,7 @@ static int uart_write(struct tty_struct *tty,
                ret += c;
        }
 
-       __uart_start(tty);
+       __uart_start(state);
        uart_port_unlock(port, flags);
        return ret;
 }