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USB: serial: quatech2: drop redundant tty_buffer_request_room 

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@kernel.org>
This commit is contained in:
Johan Hovold 2017-04-03 11:58:55 +02:00
parent 7aac5e7d20
commit 185fcb3fbe
1 changed files with 1 additions and 3 deletions
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4
drivers/usb/serial/quatech2.c
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@ -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);