From a108bfcb372d8c4452701039308fb95747911c59 Mon Sep 17 00:00:00 2001 From: Alan Cox Date: Thu, 18 Feb 2010 16:44:01 +0000 Subject: USB: tty: Prune uses of tty_request_room in the USB layer We have lots of callers that do not need to do this in the first place. Remove the calls as they both cost CPU and for big buffers can mess up the multi-page allocation avoidance. Signed-off-by: Alan Cox Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/option.c | 1 - 1 file changed, 1 deletion(-) (limited to 'drivers/usb/serial/option.c') diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c index f6646b30f954..68c7457a98ae 100644 --- a/drivers/usb/serial/option.c +++ b/drivers/usb/serial/option.c @@ -964,7 +964,6 @@ static void option_indat_callback(struct urb *urb) } else { tty = tty_port_tty_get(&port->port); if (urb->actual_length) { - tty_buffer_request_room(tty, urb->actual_length); tty_insert_flip_string(tty, data, urb->actual_length); tty_flip_buffer_push(tty); } else -- cgit v1.2.3