Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754529Ab3FOOF0 (ORCPT ); Sat, 15 Jun 2013 10:05:26 -0400 Received: from mailout01.c08.mtsvc.net ([205.186.168.189]:40189 "EHLO mailout01.c08.mtsvc.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754357Ab3FOOEw (ORCPT ); Sat, 15 Jun 2013 10:04:52 -0400 From: Peter Hurley To: Greg Kroah-Hartman Cc: linux-kernel@vger.kernel.org, linux-serial@vger.kernel.org, Jiri Slaby , Peter Hurley Subject: [PATCH v2 1/9] n_tty: Remove unused echo_overrun field Date: Sat, 15 Jun 2013 10:04:21 -0400 Message-Id: <1371305069-5366-2-git-send-email-peter@hurleysoftware.com> X-Mailer: git-send-email 1.8.1.2 In-Reply-To: <1371305069-5366-1-git-send-email-peter@hurleysoftware.com> References: <1371303376-5028-1-git-send-email-peter@hurleysoftware.com> <1371305069-5366-1-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 Content-Length: 1913 Lines: 60 The echo_overrun field is only assigned and never tested; remove it. Signed-off-by: Peter Hurley --- drivers/tty/n_tty.c | 8 +------- 1 file changed, 1 insertion(+), 7 deletions(-) diff --git a/drivers/tty/n_tty.c b/drivers/tty/n_tty.c index 2321d6a..160d9d2 100644 --- a/drivers/tty/n_tty.c +++ b/drivers/tty/n_tty.c @@ -96,7 +96,6 @@ struct n_tty_data { /* must hold exclusive termios_rwsem to reset these */ unsigned char lnext:1, erasing:1, raw:1, real_raw:1, icanon:1; - unsigned char echo_overrun:1; /* shared by producer and consumer */ char *read_buf; @@ -325,7 +324,7 @@ static void reset_buffer_flags(struct n_tty_data *ldata) ldata->read_head = ldata->canon_head = ldata->read_tail = 0; mutex_lock(&ldata->echo_lock); - ldata->echo_pos = ldata->echo_cnt = ldata->echo_overrun = 0; + ldata->echo_pos = ldata->echo_cnt = 0; mutex_unlock(&ldata->echo_lock); ldata->erasing = 0; @@ -781,14 +780,11 @@ static void process_echoes(struct tty_struct *tty) if (nr == 0) { ldata->echo_pos = 0; ldata->echo_cnt = 0; - ldata->echo_overrun = 0; } else { int num_processed = ldata->echo_cnt - nr; ldata->echo_pos += num_processed; ldata->echo_pos &= N_TTY_BUF_SIZE - 1; ldata->echo_cnt = nr; - if (num_processed > 0) - ldata->echo_overrun = 0; } mutex_unlock(&ldata->echo_lock); @@ -834,8 +830,6 @@ static void add_echo_byte(unsigned char c, struct n_tty_data *ldata) ldata->echo_pos++; } ldata->echo_pos &= N_TTY_BUF_SIZE - 1; - - ldata->echo_overrun = 1; } else { new_byte_pos = ldata->echo_pos + ldata->echo_cnt; new_byte_pos &= N_TTY_BUF_SIZE - 1; -- 1.8.1.2 -- 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/