From 177765b350a06493b9437f814384f2a018fd7731 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Wed, 21 Apr 2021 11:55:07 +0200 Subject: serial: timbuart: drop low-latency workaround The timbuart driver has always carried a workaround for the infamous low_latency behaviour of tty_flip_buffer_push() which required not holding the port lock when the low_latency flag was set. Since commit a9c3f68f3cd8 ("tty: Fix low_latency BUG"), tty_flip_buffer_push() always schedules a work item to push data to the line discipline and there's no need to keep any low_latency hacks around. Signed-off-by: Johan Hovold Link: https://lore.kernel.org/r/20210421095509.3024-25-johan@kernel.org Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/timbuart.c | 2 -- 1 file changed, 2 deletions(-) (limited to 'drivers/tty/serial') diff --git a/drivers/tty/serial/timbuart.c b/drivers/tty/serial/timbuart.c index 2126e6e6dfd1..08941eabe7b1 100644 --- a/drivers/tty/serial/timbuart.c +++ b/drivers/tty/serial/timbuart.c @@ -87,9 +87,7 @@ static void timbuart_rx_chars(struct uart_port *port) tty_insert_flip_char(tport, ch, TTY_NORMAL); } - spin_unlock(&port->lock); tty_flip_buffer_push(tport); - spin_lock(&port->lock); dev_dbg(port->dev, "%s - total read %d bytes\n", __func__, port->icount.rx); -- cgit v1.2.3