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path: root/drivers/tty/ipwireless/tty.c
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Diffstat (limited to 'drivers/tty/ipwireless/tty.c')
-rw-r--r--drivers/tty/ipwireless/tty.c81
1 files changed, 35 insertions, 46 deletions
diff --git a/drivers/tty/ipwireless/tty.c b/drivers/tty/ipwireless/tty.c
index 4daf962f7055..f8b5fa0093a3 100644
--- a/drivers/tty/ipwireless/tty.c
+++ b/drivers/tty/ipwireless/tty.c
@@ -44,14 +44,13 @@
#define TTYTYPE_RAS_RAW (2)
struct ipw_tty {
+ struct tty_port port;
int index;
struct ipw_hardware *hardware;
unsigned int channel_idx;
unsigned int secondary_channel_idx;
int tty_type;
struct ipw_network *network;
- struct tty_struct *linux_tty;
- int open_count;
unsigned int control_lines;
struct mutex ipw_tty_mutex;
int tx_bytes_queued;
@@ -73,23 +72,6 @@ static char *tty_type_name(int tty_type)
return channel_names[tty_type];
}
-static void report_registering(struct ipw_tty *tty)
-{
- char *iftype = tty_type_name(tty->tty_type);
-
- printk(KERN_INFO IPWIRELESS_PCCARD_NAME
- ": registering %s device ttyIPWp%d\n", iftype, tty->index);
-}
-
-static void report_deregistering(struct ipw_tty *tty)
-{
- char *iftype = tty_type_name(tty->tty_type);
-
- printk(KERN_INFO IPWIRELESS_PCCARD_NAME
- ": deregistering %s device ttyIPWp%d\n", iftype,
- tty->index);
-}
-
static struct ipw_tty *get_tty(int index)
{
/*
@@ -117,12 +99,12 @@ static int ipw_open(struct tty_struct *linux_tty, struct file *filp)
mutex_unlock(&tty->ipw_tty_mutex);
return -ENODEV;
}
- if (tty->open_count == 0)
+ if (tty->port.count == 0)
tty->tx_bytes_queued = 0;
- tty->open_count++;
+ tty->port.count++;
- tty->linux_tty = linux_tty;
+ tty->port.tty = linux_tty;
linux_tty->driver_data = tty;
linux_tty->low_latency = 1;
@@ -136,13 +118,13 @@ static int ipw_open(struct tty_struct *linux_tty, struct file *filp)
static void do_ipw_close(struct ipw_tty *tty)
{
- tty->open_count--;
+ tty->port.count--;
- if (tty->open_count == 0) {
- struct tty_struct *linux_tty = tty->linux_tty;
+ if (tty->port.count == 0) {
+ struct tty_struct *linux_tty = tty->port.tty;
if (linux_tty != NULL) {
- tty->linux_tty = NULL;
+ tty->port.tty = NULL;
linux_tty->driver_data = NULL;
if (tty->tty_type == TTYTYPE_MODEM)
@@ -159,7 +141,7 @@ static void ipw_hangup(struct tty_struct *linux_tty)
return;
mutex_lock(&tty->ipw_tty_mutex);
- if (tty->open_count == 0) {
+ if (tty->port.count == 0) {
mutex_unlock(&tty->ipw_tty_mutex);
return;
}
@@ -182,13 +164,13 @@ void ipwireless_tty_received(struct ipw_tty *tty, unsigned char *data,
int work = 0;
mutex_lock(&tty->ipw_tty_mutex);
- linux_tty = tty->linux_tty;
+ linux_tty = tty->port.tty;
if (linux_tty == NULL) {
mutex_unlock(&tty->ipw_tty_mutex);
return;
}
- if (!tty->open_count) {
+ if (!tty->port.count) {
mutex_unlock(&tty->ipw_tty_mutex);
return;
}
@@ -230,7 +212,7 @@ static int ipw_write(struct tty_struct *linux_tty,
return -ENODEV;
mutex_lock(&tty->ipw_tty_mutex);
- if (!tty->open_count) {
+ if (!tty->port.count) {
mutex_unlock(&tty->ipw_tty_mutex);
return -EINVAL;
}
@@ -270,7 +252,7 @@ static int ipw_write_room(struct tty_struct *linux_tty)
if (!tty)
return -ENODEV;
- if (!tty->open_count)
+ if (!tty->port.count)
return -EINVAL;
room = IPWIRELESS_TX_QUEUE_SIZE - tty->tx_bytes_queued;
@@ -312,7 +294,7 @@ static int ipw_chars_in_buffer(struct tty_struct *linux_tty)
if (!tty)
return 0;
- if (!tty->open_count)
+ if (!tty->port.count)
return 0;
return tty->tx_bytes_queued;
@@ -393,7 +375,7 @@ static int ipw_tiocmget(struct tty_struct *linux_tty)
if (!tty)
return -ENODEV;
- if (!tty->open_count)
+ if (!tty->port.count)
return -EINVAL;
return get_control_lines(tty);
@@ -409,7 +391,7 @@ ipw_tiocmset(struct tty_struct *linux_tty,
if (!tty)
return -ENODEV;
- if (!tty->open_count)
+ if (!tty->port.count)
return -EINVAL;
return set_control_lines(tty, set, clear);
@@ -423,7 +405,7 @@ static int ipw_ioctl(struct tty_struct *linux_tty,
if (!tty)
return -ENODEV;
- if (!tty->open_count)
+ if (!tty->port.count)
return -EINVAL;
/* FIXME: Exactly how is the tty object locked here .. */
@@ -492,6 +474,7 @@ static int add_tty(int j,
ttys[j]->network = network;
ttys[j]->tty_type = tty_type;
mutex_init(&ttys[j]->ipw_tty_mutex);
+ tty_port_init(&ttys[j]->port);
tty_register_device(ipw_tty_driver, j, NULL);
ipwireless_associate_network_tty(network, channel_idx, ttys[j]);
@@ -500,8 +483,12 @@ static int add_tty(int j,
ipwireless_associate_network_tty(network,
secondary_channel_idx,
ttys[j]);
- if (get_tty(j) == ttys[j])
- report_registering(ttys[j]);
+ /* check if we provide raw device (if loopback is enabled) */
+ if (get_tty(j))
+ printk(KERN_INFO IPWIRELESS_PCCARD_NAME
+ ": registering %s device ttyIPWp%d\n",
+ tty_type_name(tty_type), j);
+
return 0;
}
@@ -560,19 +547,21 @@ void ipwireless_tty_free(struct ipw_tty *tty)
if (ttyj) {
mutex_lock(&ttyj->ipw_tty_mutex);
- if (get_tty(j) == ttyj)
- report_deregistering(ttyj);
+ if (get_tty(j))
+ printk(KERN_INFO IPWIRELESS_PCCARD_NAME
+ ": deregistering %s device ttyIPWp%d\n",
+ tty_type_name(ttyj->tty_type), j);
ttyj->closing = 1;
- if (ttyj->linux_tty != NULL) {
+ if (ttyj->port.tty != NULL) {
mutex_unlock(&ttyj->ipw_tty_mutex);
- tty_hangup(ttyj->linux_tty);
- /* Wait till the tty_hangup has completed */
- flush_work_sync(&ttyj->linux_tty->hangup_work);
+ tty_vhangup(ttyj->port.tty);
/* FIXME: Exactly how is the tty object locked here
against a parallel ioctl etc */
+ /* FIXME2: hangup does not mean all processes
+ * are gone */
mutex_lock(&ttyj->ipw_tty_mutex);
}
- while (ttyj->open_count)
+ while (ttyj->port.count)
do_ipw_close(ttyj);
ipwireless_disassociate_network_ttys(network,
ttyj->channel_idx);
@@ -661,8 +650,8 @@ ipwireless_tty_notify_control_line_change(struct ipw_tty *tty,
*/
if ((old_control_lines & IPW_CONTROL_LINE_DCD)
&& !(tty->control_lines & IPW_CONTROL_LINE_DCD)
- && tty->linux_tty) {
- tty_hangup(tty->linux_tty);
+ && tty->port.tty) {
+ tty_hangup(tty->port.tty);
}
}
generated by cgit v1.2.3-58-ga151 (git 2.39.0) at 2024-12-25 00:10:24 +0000