From 493a275c04715cf0a571e017ad24e0b78af094eb Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Wed, 21 Apr 2021 11:55:00 +0200 Subject: serial: owl: drop low-latency workaround The owl driver has always carried an unnecessary workaround for the infamous low_latency behaviour of tty_flip_buffer_push(), which had been removed years before the driver was added by commit fc60a8b675bd ("tty: serial: owl: Implement console driver"). Specifically, 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/20210421095509.3024-18-johan@kernel.org Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/owl-uart.c | 2 -- 1 file changed, 2 deletions(-) (limited to 'drivers/tty/serial') diff --git a/drivers/tty/serial/owl-uart.c b/drivers/tty/serial/owl-uart.c index abc6042f0378..91f1eb0058d7 100644 --- a/drivers/tty/serial/owl-uart.c +++ b/drivers/tty/serial/owl-uart.c @@ -247,9 +247,7 @@ static void owl_uart_receive_chars(struct uart_port *port) stat = owl_uart_read(port, OWL_UART_STAT); } - spin_unlock(&port->lock); tty_flip_buffer_push(&port->state->port); - spin_lock(&port->lock); } static irqreturn_t owl_uart_irq(int irq, void *dev_id) -- cgit v1.2.3-59-g8ed1b