Drop redundant calls to tty_buffer_request_room and use the more efficient tty_insert_flip_char when inserting single characters. Signed-off-by: Johan Hovold <johan@xxxxxxxxxx> --- drivers/usb/serial/quatech2.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/drivers/usb/serial/quatech2.c b/drivers/usb/serial/quatech2.c index 6ddcaa2de902..60e17d1444c3 100644 --- a/drivers/usb/serial/quatech2.c +++ b/drivers/usb/serial/quatech2.c @@ -601,7 +601,6 @@ static void qt2_process_read_urb(struct urb *urb) escapeflag = true; break; case QT2_CONTROL_ESCAPE: - tty_buffer_request_room(&port->port, 2); tty_insert_flip_string(&port->port, ch, 2); i += 2; escapeflag = true; @@ -616,8 +615,7 @@ static void qt2_process_read_urb(struct urb *urb) continue; } - tty_buffer_request_room(&port->port, 1); - tty_insert_flip_string(&port->port, ch, 1); + tty_insert_flip_char(&port->port, *ch, TTY_NORMAL); } tty_flip_buffer_push(&port->port); -- 2.12.2 -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
