From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758817AbcAKGqy (ORCPT ); Mon, 11 Jan 2016 01:46:54 -0500 Received: from mail-pf0-f178.google.com ([209.85.192.178]:36152 "EHLO mail-pf0-f178.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758423AbcAKGl4 (ORCPT ); Mon, 11 Jan 2016 01:41:56 -0500 From: Peter Hurley To: Greg Kroah-Hartman Cc: Jiri Slaby , linux-kernel@vger.kernel.org, Peter Hurley Subject: [PATCH v3 01/19] staging: digi: Replace open-coded tty_wakeup() Date: Sun, 10 Jan 2016 22:40:50 -0800 Message-Id: <1452494468-21359-2-git-send-email-peter@hurleysoftware.com> X-Mailer: git-send-email 2.7.0 In-Reply-To: <1452494468-21359-1-git-send-email-peter@hurleysoftware.com> References: <1452400870-6005-1-git-send-email-peter@hurleysoftware.com> <1452494468-21359-1-git-send-email-peter@hurleysoftware.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The open-coded tty_wakeup()s are attempts to workaround fixed bugs in the line discipline write_wakeup() method. Replace with tty_wakeup(). Signed-off-by: Peter Hurley --- drivers/staging/dgap/dgap.c | 28 ++++++---------------------- drivers/staging/dgnc/dgnc_tty.c | 18 ++---------------- 2 files changed, 8 insertions(+), 38 deletions(-) diff --git a/drivers/staging/dgap/dgap.c b/drivers/staging/dgap/dgap.c index bad3551..dfbae21 100644 --- a/drivers/staging/dgap/dgap.c +++ b/drivers/staging/dgap/dgap.c @@ -1665,9 +1665,7 @@ static void dgap_input(struct channel_t *ch) } static void dgap_write_wakeup(struct board_t *bd, struct channel_t *ch, - struct un_t *un, u32 mask, - unsigned long *irq_flags1, - unsigned long *irq_flags2) + struct un_t *un, u32 mask) { if (!(un->un_flags & mask)) return; @@ -1677,17 +1675,7 @@ static void dgap_write_wakeup(struct board_t *bd, struct channel_t *ch, if (!(un->un_flags & UN_ISOPEN)) return; - if ((un->un_tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) && - un->un_tty->ldisc->ops->write_wakeup) { - spin_unlock_irqrestore(&ch->ch_lock, *irq_flags2); - spin_unlock_irqrestore(&bd->bd_lock, *irq_flags1); - - (un->un_tty->ldisc->ops->write_wakeup)(un->un_tty); - - spin_lock_irqsave(&bd->bd_lock, *irq_flags1); - spin_lock_irqsave(&ch->ch_lock, *irq_flags2); - } - wake_up_interruptible(&un->un_tty->write_wait); + tty_wakeup(un->un_tty); wake_up_interruptible(&un->un_flags_wait); } @@ -1952,10 +1940,8 @@ static int dgap_event(struct board_t *bd) * Process Transmit low. */ if (reason & IFTLW) { - dgap_write_wakeup(bd, ch, &ch->ch_tun, UN_LOW, - &lock_flags, &lock_flags2); - dgap_write_wakeup(bd, ch, &ch->ch_pun, UN_LOW, - &lock_flags, &lock_flags2); + dgap_write_wakeup(bd, ch, &ch->ch_tun, UN_LOW); + dgap_write_wakeup(bd, ch, &ch->ch_pun, UN_LOW); if (ch->ch_flags & CH_WLOW) { ch->ch_flags &= ~CH_WLOW; wake_up_interruptible(&ch->ch_flags_wait); @@ -1966,10 +1952,8 @@ static int dgap_event(struct board_t *bd) * Process Transmit empty. */ if (reason & IFTEM) { - dgap_write_wakeup(bd, ch, &ch->ch_tun, UN_EMPTY, - &lock_flags, &lock_flags2); - dgap_write_wakeup(bd, ch, &ch->ch_pun, UN_EMPTY, - &lock_flags, &lock_flags2); + dgap_write_wakeup(bd, ch, &ch->ch_tun, UN_EMPTY); + dgap_write_wakeup(bd, ch, &ch->ch_pun, UN_EMPTY); if (ch->ch_flags & CH_WEMPTY) { ch->ch_flags &= ~CH_WEMPTY; wake_up_interruptible(&ch->ch_flags_wait); diff --git a/drivers/staging/dgnc/dgnc_tty.c b/drivers/staging/dgnc/dgnc_tty.c index 48e4b90..c152048 100644 --- a/drivers/staging/dgnc/dgnc_tty.c +++ b/drivers/staging/dgnc/dgnc_tty.c @@ -933,14 +933,7 @@ void dgnc_wakeup_writes(struct channel_t *ch) } if (ch->ch_tun.un_flags & UN_ISOPEN) { - if ((ch->ch_tun.un_tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) && - ch->ch_tun.un_tty->ldisc->ops->write_wakeup) { - spin_unlock_irqrestore(&ch->ch_lock, flags); - ch->ch_tun.un_tty->ldisc->ops->write_wakeup(ch->ch_tun.un_tty); - spin_lock_irqsave(&ch->ch_lock, flags); - } - - wake_up_interruptible(&ch->ch_tun.un_tty->write_wait); + tty_wakeup(ch->ch_tun.un_tty); /* * If unit is set to wait until empty, check to make sure @@ -975,14 +968,7 @@ void dgnc_wakeup_writes(struct channel_t *ch) } if (ch->ch_pun.un_flags & UN_ISOPEN) { - if ((ch->ch_pun.un_tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) && - ch->ch_pun.un_tty->ldisc->ops->write_wakeup) { - spin_unlock_irqrestore(&ch->ch_lock, flags); - ch->ch_pun.un_tty->ldisc->ops->write_wakeup(ch->ch_pun.un_tty); - spin_lock_irqsave(&ch->ch_lock, flags); - } - - wake_up_interruptible(&ch->ch_pun.un_tty->write_wait); + tty_wakeup(ch->ch_pun.un_tty); /* * If unit is set to wait until empty, check to make sure -- 2.7.0