[PATCH v3 06/14] serial: liteuart: move tty_flip_buffer_push() out of rx loop

Gabriel Somlo
2022-11-12T21:22:03Z

Calling tty_flip_buffer_push() for each individual received character
is overkill. Move it out of the rx loop, and only call it once per
set of characters received together.

Signed-off-by: Gabriel Somlo <gsomlo@gmail.com>
---
drivers/tty/serial/liteuart.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/tty/serial/liteuart.c b/drivers/tty/serial/liteuart.c
index 047d5ad32e13..ff3486860989 100644
--- a/drivers/tty/serial/liteuart.c
+++ b/drivers/tty/serial/liteuart.c
@@ -86,10 +86,10 @@ static void liteuart_timer(struct timer_list *t)
/* no overflow bits in status */
if (!(uart_handle_sysrq_char(port, ch)))
uart_insert_char(port, status, 0, ch, flg);
-
- tty_flip_buffer_push(&port->state->port);
}

+ tty_flip_buffer_push(&port->state->port);
+
mod_timer(&uart->timer, jiffies + uart_poll_timeout(port));
}

--
2.37.3