lkml.org 
[lkml]   [2013]   [Feb]   [20]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v4 02/32] n_tty: Factor packet mode status change for reuse
Date
Factor the packet mode status change from n_tty_flush_buffer
for use by follow-on patch.

Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
---
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


\
 
 \ /
  Last update: 2013-02-20 21:42    [W:0.503 / U:1.576 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site