From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S935336Ab3BTUFF (ORCPT ); Wed, 20 Feb 2013 15:05:05 -0500 Received: from mailout02.c08.mtsvc.net ([205.186.168.190]:53933 "EHLO mailout02.c08.mtsvc.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S935190Ab3BTUEt (ORCPT ); Wed, 20 Feb 2013 15:04:49 -0500 From: Peter Hurley To: Greg Kroah-Hartman , Jiri Slaby Cc: Sasha Levin , Sebastian Andrzej Siewior , linux-kernel@vger.kernel.org, linux-serial@vger.kernel.org, Ilya Zykov , Dave Jones , Michael Ellerman , Shawn Guo , Peter Hurley Subject: [PATCH v4 02/32] n_tty: Factor packet mode status change for reuse Date: Wed, 20 Feb 2013 15:02:49 -0500 Message-Id: <1361390599-15195-3-git-send-email-peter@hurleysoftware.com> X-Mailer: git-send-email 1.8.1.2 In-Reply-To: <1361390599-15195-1-git-send-email-peter@hurleysoftware.com> References: <1361390599-15195-1-git-send-email-peter@hurleysoftware.com> In-Reply-To: <1360095638-6624-1-git-send-email-peter@hurleysoftware.com> References: <1360095638-6624-1-git-send-email-peter@hurleysoftware.com> X-Authenticated-User: 125194 peter@hurleysoftware.com Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Factor the packet mode status change from n_tty_flush_buffer for use by follow-on patch. Signed-off-by: Peter Hurley --- drivers/tty/n_tty.c | 24 ++++++++++++++---------- 1 file changed, 14 insertions(+), 10 deletions(-) diff --git a/drivers/tty/n_tty.c b/drivers/tty/n_tty.c index 9c18e37..4d3ab2c 100644 --- a/drivers/tty/n_tty.c +++ b/drivers/tty/n_tty.c @@ -238,6 +238,18 @@ static void reset_buffer_flags(struct tty_struct *tty) n_tty_set_room(tty); } +static void n_tty_packet_mode_flush(struct tty_struct *tty) +{ + unsigned long flags; + + spin_lock_irqsave(&tty->ctrl_lock, flags); + if (tty->link->packet) { + tty->ctrl_status |= TIOCPKT_FLUSHREAD; + wake_up_interruptible(&tty->link->read_wait); + } + spin_unlock_irqrestore(&tty->ctrl_lock, flags); +} + /** * n_tty_flush_buffer - clean input queue * @tty: terminal device @@ -252,19 +264,11 @@ static void reset_buffer_flags(struct tty_struct *tty) static void n_tty_flush_buffer(struct tty_struct *tty) { - unsigned long flags; /* clear everything and unthrottle the driver */ reset_buffer_flags(tty); - if (!tty->link) - return; - - spin_lock_irqsave(&tty->ctrl_lock, flags); - if (tty->link->packet) { - tty->ctrl_status |= TIOCPKT_FLUSHREAD; - wake_up_interruptible(&tty->link->read_wait); - } - spin_unlock_irqrestore(&tty->ctrl_lock, flags); + if (tty->link) + n_tty_packet_mode_flush(tty); } /** -- 1.8.1.2