Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755386Ab3DLIei (ORCPT ); Fri, 12 Apr 2013 04:34:38 -0400 Received: from mail-lb0-f176.google.com ([209.85.217.176]:56663 "EHLO mail-lb0-f176.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754185Ab3DLIdw (ORCPT ); Fri, 12 Apr 2013 04:33:52 -0400 From: Johan Hovold To: Greg Kroah-Hartman Cc: Jiri Slaby , Peter Hurley , "David S. Miller" , linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org, Johan Hovold Subject: [PATCH 1/4] TTY: synclink: fix DTR being raised on hang up Date: Fri, 12 Apr 2013 10:32:28 +0200 Message-Id: <1365755551-17824-2-git-send-email-jhovold@gmail.com> X-Mailer: git-send-email 1.8.1.5 In-Reply-To: <1365755551-17824-1-git-send-email-jhovold@gmail.com> References: <1365755551-17824-1-git-send-email-jhovold@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1104 Lines: 32 Make sure to check ASYNC_INITIALISED before raising DTR when waking up from blocked open in block_til_ready. Currently DTR could get raised at hang up as a blocked process would raise DTR unconditionally before checking for hang up and returning. Signed-off-by: Johan Hovold --- drivers/tty/synclink.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/tty/synclink.c b/drivers/tty/synclink.c index 72d6071..8eaf1ab 100644 --- a/drivers/tty/synclink.c +++ b/drivers/tty/synclink.c @@ -3308,7 +3308,7 @@ static int block_til_ready(struct tty_struct *tty, struct file * filp, port->blocked_open++; while (1) { - if (tty->termios.c_cflag & CBAUD) + if (C_BAUD(tty) && test_bit(ASYNCB_INITIALIZED, &port->flags)) tty_port_raise_dtr_rts(port); set_current_state(TASK_INTERRUPTIBLE); -- 1.8.1.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/