From: Timo Teräs <ext-timo.teras@nokia.com>
Date: Wed, 10 Aug 2005 03:28:21 +0000 (-0700)
Subject: [Bluetooth]: Call tty_hangup() when DCD is de-asserted
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=7b9eb9e2099f6f4acd6a36bcd7820d27c3cf5ee3;p=linux-beck.git

[Bluetooth]: Call tty_hangup() when DCD is de-asserted

The RFCOMM layer does not handle properly the de-assertation
of CD signal. It should call tty_hangup() to work properly.

Signed-off-by: Timo Teräs <ext-timo.teras@nokia.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/bluetooth/rfcomm/tty.c b/net/bluetooth/rfcomm/tty.c
index 6304590fd36a..67d9dd6b0fac 100644
--- a/net/bluetooth/rfcomm/tty.c
+++ b/net/bluetooth/rfcomm/tty.c
@@ -528,9 +528,14 @@ static void rfcomm_dev_modem_status(struct rfcomm_dlc *dlc, u8 v24_sig)
 	struct rfcomm_dev *dev = dlc->owner;
 	if (!dev)
 		return;
-	
+
 	BT_DBG("dlc %p dev %p v24_sig 0x%02x", dlc, dev, v24_sig);
 
+	if ((dev->modem_status & TIOCM_CD) && !(v24_sig & RFCOMM_V24_DV)) {
+		if (dev->tty && !C_CLOCAL(dev->tty))
+			tty_hangup(dev->tty);
+	}
+
 	dev->modem_status = 
 		((v24_sig & RFCOMM_V24_RTC) ? (TIOCM_DSR | TIOCM_DTR) : 0) |
 		((v24_sig & RFCOMM_V24_RTR) ? (TIOCM_RTS | TIOCM_CTS) : 0) |