diff --git a/drivers/char/epca.c b/drivers/char/epca.c
index af7c13ca949377da39751cb78df840b21de7ff32..8797b774235053e873f81df29020da6110777198 100644
--- a/drivers/char/epca.c
+++ b/drivers/char/epca.c
@@ -745,7 +745,7 @@ static int epca_carrier_raised(struct tty_port *port)
return 0;
}
-static void epca_raise_dtr_rts(struct tty_port *port)
+static void epca_dtr_rts(struct tty_port *port, int onoff)
{
}
@@ -925,7 +925,7 @@ static const struct tty_operations pc_ops = {
static const struct tty_port_operations epca_port_ops = {
.carrier_raised = epca_carrier_raised,
- .raise_dtr_rts = epca_raise_dtr_rts,
+ .dtr_rts = epca_dtr_rts,
};
static int info_open(struct tty_struct *tty, struct file *filp)
diff --git a/drivers/char/isicom.c b/drivers/char/isicom.c
index a59eac584d1621b3e4824ca3e644d944a31266a6..4d745a89504f196cc545145ca4bd653c4927ad0b 100644
--- a/drivers/char/isicom.c
+++ b/drivers/char/isicom.c
@@ -329,7 +329,7 @@ static inline void drop_rts(struct isi_port *port)
/* card->lock MUST NOT be held */
-static void isicom_raise_dtr_rts(struct tty_port *port)
+static void isicom_dtr_rts(struct tty_port *port, int on)
{
struct isi_port *ip = container_of(port, struct isi_port, port);
struct isi_board *card = ip->card;
@@ -339,10 +339,17 @@ static void isicom_raise_dtr_rts(struct tty_port *port)
if (!lock_card(card))
return;
- outw(0x8000 | (channel << card->shift_count) | 0x02, base);
- outw(0x0f04, base);
- InterruptTheCard(base);
- ip->status |= (ISI_DTR | ISI_RTS);
+ if (on) {
+ outw(0x8000 | (channel << card->shift_count) | 0x02, base);
+ outw(0x0f04, base);
+ InterruptTheCard(base);
+ ip->status |= (ISI_DTR | ISI_RTS);
+ } else {
+ outw(0x8000 | (channel << card->shift_count) | 0x02, base);
+ outw(0x0C04, base);
+ InterruptTheCard(base);
+ ip->status &= ~(ISI_DTR | ISI_RTS);
+ }
unlock_card(card);
}
@@ -1339,7 +1346,7 @@ static const struct tty_operations isicom_ops = {
static const struct tty_port_operations isicom_port_ops = {
.carrier_raised = isicom_carrier_raised,
- .raise_dtr_rts = isicom_raise_dtr_rts,
+ .dtr_rts = isicom_dtr_rts,
};
static int __devinit reset_card(struct pci_dev *pdev,
diff --git a/drivers/char/istallion.c b/drivers/char/istallion.c
index fff19f7e29d25eac8c7cfbb4903638107dd8561c..e18800c400b10b60578b6fb9bb1d86a16dcbfd04 100644
--- a/drivers/char/istallion.c
+++ b/drivers/char/istallion.c
@@ -1140,14 +1140,14 @@ static int stli_carrier_raised(struct tty_port *port)
return (portp->sigs & TIOCM_CD) ? 1 : 0;
}
-static void stli_raise_dtr_rts(struct tty_port *port)
+static void stli_dtr_rts(struct tty_port *port, int on)
{
struct stliport *portp = container_of(port, struct stliport, port);
struct stlibrd *brdp = stli_brds[portp->brdnr];
- stli_mkasysigs(&portp->asig, 1, 1);
+ stli_mkasysigs(&portp->asig, on, on);
if (stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig,
sizeof(asysigs_t), 0) < 0)
- printk(KERN_WARNING "istallion: dtr raise failed.\n");
+ printk(KERN_WARNING "istallion: dtr set failed.\n");
}
@@ -4417,7 +4417,7 @@ static const struct tty_operations stli_ops = {
static const struct tty_port_operations stli_port_ops = {
.carrier_raised = stli_carrier_raised,
- .raise_dtr_rts = stli_raise_dtr_rts,
+ .dtr_rts = stli_dtr_rts,
};
/*****************************************************************************/
diff --git a/drivers/char/mxser.c b/drivers/char/mxser.c
index 13f8871e5b2177bb844018f6543ca2e690e973b6..9533f43a30bb0e7bad9873acb85d25cf39e44625 100644
--- a/drivers/char/mxser.c
+++ b/drivers/char/mxser.c
@@ -547,14 +547,18 @@ static int mxser_carrier_raised(struct tty_port *port)
return (inb(mp->ioaddr + UART_MSR) & UART_MSR_DCD)?1:0;
}
-static void mxser_raise_dtr_rts(struct tty_port *port)
+static void mxser_dtr_rts(struct tty_port *port, int on)
{
struct mxser_port *mp = container_of(port, struct mxser_port, port);
unsigned long flags;
spin_lock_irqsave(&mp->slock, flags);
- outb(inb(mp->ioaddr + UART_MCR) |
- UART_MCR_DTR | UART_MCR_RTS, mp->ioaddr + UART_MCR);
+ if (on)
+ outb(inb(mp->ioaddr + UART_MCR) |
+ UART_MCR_DTR | UART_MCR_RTS, mp->ioaddr + UART_MCR);
+ else
+ outb(inb(mp->ioaddr + UART_MCR)&~(UART_MCR_DTR | UART_MCR_RTS),
+ mp->ioaddr + UART_MCR);
spin_unlock_irqrestore(&mp->slock, flags);
}
@@ -2356,7 +2360,7 @@ static const struct tty_operations mxser_ops = {
struct tty_port_operations mxser_port_ops = {
.carrier_raised = mxser_carrier_raised,
- .raise_dtr_rts = mxser_raise_dtr_rts,
+ .dtr_rts = mxser_dtr_rts,
};
/*
diff --git a/drivers/char/pcmcia/synclink_cs.c b/drivers/char/pcmcia/synclink_cs.c
index 19d79fc54461c592111fbce5d0e68e395e10dcd4..77b3648892249f494724bf2a6302bdfc9158c4c5 100644
--- a/drivers/char/pcmcia/synclink_cs.c
+++ b/drivers/char/pcmcia/synclink_cs.c
@@ -383,7 +383,7 @@ static void async_mode(MGSLPC_INFO *info);
static void tx_timeout(unsigned long context);
static int carrier_raised(struct tty_port *port);
-static void raise_dtr_rts(struct tty_port *port);
+static void dtr_rts(struct tty_port *port, int onoff);
#if SYNCLINK_GENERIC_HDLC
#define dev_to_port(D) (dev_to_hdlc(D)->priv)
@@ -513,7 +513,7 @@ static void ldisc_receive_buf(struct tty_struct *tty,
static const struct tty_port_operations mgslpc_port_ops = {
.carrier_raised = carrier_raised,
- .raise_dtr_rts = raise_dtr_rts
+ .dtr_rts = dtr_rts
};
static int mgslpc_probe(struct pcmcia_device *link)
@@ -2528,13 +2528,16 @@ static int carrier_raised(struct tty_port *port)
return 0;
}
-static void raise_dtr_rts(struct tty_port *port)
+static void dtr_rts(struct tty_port *port, int onoff)
{
MGSLPC_INFO *info = container_of(port, MGSLPC_INFO, port);
unsigned long flags;
spin_lock_irqsave(&info->lock,flags);
- info->serial_signals |= SerialSignal_RTS + SerialSignal_DTR;
+ if (onoff)
+ info->serial_signals |= SerialSignal_RTS + SerialSignal_DTR;
+ else
+ info->serial_signals &= ~SerialSignal_RTS + SerialSignal_DTR;
set_signals(info);
spin_unlock_irqrestore(&info->lock,flags);
}
diff --git a/drivers/char/rocket.c b/drivers/char/rocket.c
index f59fc5cea0673546fa03b0395a8d12b6f7872ff4..7399188049d84a8688e15ed8f8675d70940a0615 100644
--- a/drivers/char/rocket.c
+++ b/drivers/char/rocket.c
@@ -872,11 +872,16 @@ static int carrier_raised(struct tty_port *port)
return (sGetChanStatusLo(&info->channel) & CD_ACT) ? 1 : 0;
}
-static void raise_dtr_rts(struct tty_port *port)
+static void dtr_rts(struct tty_port *port, int on)
{
struct r_port *info = container_of(port, struct r_port, port);
- sSetDTR(&info->channel);
- sSetRTS(&info->channel);
+ if (on) {
+ sSetDTR(&info->channel);
+ sSetRTS(&info->channel);
+ } else {
+ sClrDTR(&info->channel);
+ sClrRTS(&info->channel);
+ }
}
/*
@@ -2250,7 +2255,7 @@ static const struct tty_operations rocket_ops = {
static const struct tty_port_operations rocket_port_ops = {
.carrier_raised = carrier_raised,
- .raise_dtr_rts = raise_dtr_rts,
+ .dtr_rts = dtr_rts,
};
/*
diff --git a/drivers/char/stallion.c b/drivers/char/stallion.c
index 2ad813a801dc391cc8bca62a4cc847b16ea0d4d1..53e504f41b2043fa89b4b9a83637fe31251d38ab 100644
--- a/drivers/char/stallion.c
+++ b/drivers/char/stallion.c
@@ -772,11 +772,11 @@ static int stl_carrier_raised(struct tty_port *port)
return (portp->sigs & TIOCM_CD) ? 1 : 0;
}
-static void stl_raise_dtr_rts(struct tty_port *port)
+static void stl_dtr_rts(struct tty_port *port, int on)
{
struct stlport *portp = container_of(port, struct stlport, port);
/* Takes brd_lock internally */
- stl_setsignals(portp, 1, 1);
+ stl_setsignals(portp, on, on);
}
/*****************************************************************************/
@@ -2547,7 +2547,7 @@ static const struct tty_operations stl_ops = {
static const struct tty_port_operations stl_port_ops = {
.carrier_raised = stl_carrier_raised,
- .raise_dtr_rts = stl_raise_dtr_rts,
+ .dtr_rts = stl_dtr_rts,
};
/*****************************************************************************/
diff --git a/drivers/char/synclink.c b/drivers/char/synclink.c
index afd0b26ca05681210edd0cc0f22b01497eea3e37..afded3a2379c592082e85e373236addce5d9fcd3 100644
--- a/drivers/char/synclink.c
+++ b/drivers/char/synclink.c
@@ -3247,13 +3247,16 @@ static int carrier_raised(struct tty_port *port)
return (info->serial_signals & SerialSignal_DCD) ? 1 : 0;
}
-static void raise_dtr_rts(struct tty_port *port)
+static void dtr_rts(struct tty_port *port, int on)
{
struct mgsl_struct *info = container_of(port, struct mgsl_struct, port);
unsigned long flags;
spin_lock_irqsave(&info->irq_spinlock,flags);
- info->serial_signals |= SerialSignal_RTS + SerialSignal_DTR;
+ if (on)
+ info->serial_signals |= SerialSignal_RTS + SerialSignal_DTR;
+ else
+ info->serial_signals &= ~(SerialSignal_RTS + SerialSignal_DTR);
usc_set_serial_signals(info);
spin_unlock_irqrestore(&info->irq_spinlock,flags);
}
@@ -4258,7 +4261,7 @@ static void mgsl_add_device( struct mgsl_struct *info )
static const struct tty_port_operations mgsl_port_ops = {
.carrier_raised = carrier_raised,
- .raise_dtr_rts = raise_dtr_rts,
+ .dtr_rts = dtr_rts,
};
diff --git a/drivers/char/synclink_gt.c b/drivers/char/synclink_gt.c
index 5e256494686a8413734db27db5b9826069e36847..67986ea0d479cea42ddd0ddde8ccd5fae30a8386 100644
--- a/drivers/char/synclink_gt.c
+++ b/drivers/char/synclink_gt.c
@@ -3099,13 +3099,16 @@ static int carrier_raised(struct tty_port *port)
return (info->signals & SerialSignal_DCD) ? 1 : 0;
}
-static void raise_dtr_rts(struct tty_port *port)
+static void dtr_rts(struct tty_port *port, int on)
{
unsigned long flags;
struct slgt_info *info = container_of(port, struct slgt_info, port);
spin_lock_irqsave(&info->lock,flags);
- info->signals |= SerialSignal_RTS + SerialSignal_DTR;
+ if (on)
+ info->signals |= SerialSignal_RTS + SerialSignal_DTR;
+ else
+ info->signals &= ~(SerialSignal_RTS + SerialSignal_DTR);
set_signals(info);
spin_unlock_irqrestore(&info->lock,flags);
}
@@ -3419,7 +3422,7 @@ static void add_device(struct slgt_info *info)
static const struct tty_port_operations slgt_port_ops = {
.carrier_raised = carrier_raised,
- .raise_dtr_rts = raise_dtr_rts,
+ .dtr_rts = dtr_rts,
};
/*
diff --git a/drivers/char/synclinkmp.c b/drivers/char/synclinkmp.c
index 26de60efe4b247162c3be863bb3a3c66d86d6c49..6f727e3c53ade1028d21cf11f364bdcc2fafbed9 100644
--- a/drivers/char/synclinkmp.c
+++ b/drivers/char/synclinkmp.c
@@ -3277,13 +3277,16 @@ static int carrier_raised(struct tty_port *port)
return (info->serial_signals & SerialSignal_DCD) ? 1 : 0;
}
-static void raise_dtr_rts(struct tty_port *port)
+static void dtr_rts(struct tty_port *port, int on)
{
SLMP_INFO *info = container_of(port, SLMP_INFO, port);
unsigned long flags;
spin_lock_irqsave(&info->lock,flags);
- info->serial_signals |= SerialSignal_RTS + SerialSignal_DTR;
+ if (on)
+ info->serial_signals |= SerialSignal_RTS + SerialSignal_DTR;
+ else
+ info->serial_signals &= ~(SerialSignal_RTS + SerialSignal_DTR);
set_signals(info);
spin_unlock_irqrestore(&info->lock,flags);
}
@@ -3746,7 +3749,7 @@ static void add_device(SLMP_INFO *info)
static const struct tty_port_operations port_ops = {
.carrier_raised = carrier_raised,
- .raise_dtr_rts = raise_dtr_rts,
+ .dtr_rts = dtr_rts,
};
/* Allocate and initialize a device instance structure
diff --git a/drivers/char/tty_port.c b/drivers/char/tty_port.c
index 9b8004c72686a45f6ea577f1cd342e001dbbfa49..926d4a5593fac0f0d1c4033252efe32e23564a7a 100644
--- a/drivers/char/tty_port.c
+++ b/drivers/char/tty_port.c
@@ -137,7 +137,7 @@ int tty_port_carrier_raised(struct tty_port *port)
EXPORT_SYMBOL(tty_port_carrier_raised);
/**
- * tty_port_raise_dtr_rts - Riase DTR/RTS
+ * tty_port_raise_dtr_rts - Raise DTR/RTS
* @port: tty port
*
* Wrapper for the DTR/RTS raise logic. For the moment this is used
@@ -147,11 +147,27 @@ EXPORT_SYMBOL(tty_port_carrier_raised);
void tty_port_raise_dtr_rts(struct tty_port *port)
{
- if (port->ops->raise_dtr_rts)
- port->ops->raise_dtr_rts(port);
+ if (port->ops->dtr_rts)
+ port->ops->dtr_rts(port, 1);
}
EXPORT_SYMBOL(tty_port_raise_dtr_rts);
+/**
+ * tty_port_lower_dtr_rts - Lower DTR/RTS
+ * @port: tty port
+ *
+ * Wrapper for the DTR/RTS raise logic. For the moment this is used
+ * to hide some internal details. This will eventually become entirely
+ * internal to the tty port.
+ */
+
+void tty_port_lower_dtr_rts(struct tty_port *port)
+{
+ if (port->ops->dtr_rts)
+ port->ops->dtr_rts(port, 0);
+}
+EXPORT_SYMBOL(tty_port_lower_dtr_rts);
+
/**
* tty_port_block_til_ready - Waiting logic for tty open
* @port: the tty port being opened
@@ -167,7 +183,7 @@ EXPORT_SYMBOL(tty_port_raise_dtr_rts);
* - port flags and counts
*
* The passed tty_port must implement the carrier_raised method if it can
- * do carrier detect and the raise_dtr_rts method if it supports software
+ * do carrier detect and the dtr_rts method if it supports software
* management of these lines. Note that the dtr/rts raise is done each
* iteration as a hangup may have previously dropped them while we wait.
*/
@@ -302,6 +318,9 @@ void tty_port_close_end(struct tty_port *port, struct tty_struct *tty)
tty_ldisc_flush(tty);
+ if (tty->termios->c_cflag & HUPCL)
+ tty_port_lower_dtr_rts(port);
+
spin_lock_irqsave(&port->lock, flags);
tty->closing = 0;
diff --git a/include/linux/tty.h b/include/linux/tty.h
index fc39db95499fbab4142800b24faf52b182fae113..98694364c96fdef164b4e790a5eb58e42a2e7497 100644
--- a/include/linux/tty.h
+++ b/include/linux/tty.h
@@ -185,7 +185,7 @@ struct tty_port;
struct tty_port_operations {
/* Return 1 if the carrier is raised */
int (*carrier_raised)(struct tty_port *port);
- void (*raise_dtr_rts)(struct tty_port *port);
+ void (*dtr_rts)(struct tty_port *port, int raise);
};
struct tty_port {
@@ -438,6 +438,7 @@ extern struct tty_struct *tty_port_tty_get(struct tty_port *port);
extern void tty_port_tty_set(struct tty_port *port, struct tty_struct *tty);
extern int tty_port_carrier_raised(struct tty_port *port);
extern void tty_port_raise_dtr_rts(struct tty_port *port);
+extern void tty_port_lower_dtr_rts(struct tty_port *port);
extern void tty_port_hangup(struct tty_port *port);
extern int tty_port_block_til_ready(struct tty_port *port,
struct tty_struct *tty, struct file *filp);