TTY: ipwireless, add tty_port

And use count from that.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Jiri Kosina <jkosina@suse.cz>
Acked-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/ipwireless/tty.c b/drivers/tty/ipwireless/tty.c
index 4270bfd59a7f09e1398b8509d82b829aec398246..0b4964d1eea55380692dcf75824c9e00e17ea553 100644 (file)
--- a/drivers/tty/ipwireless/tty.c
+++ b/drivers/tty/ipwireless/tty.c
@@ -44,6 +44,7 @@
 #define TTYTYPE_RAS_RAW  (2)
 
 struct ipw_tty {
+       struct tty_port port;
        int index;
        struct ipw_hardware *hardware;
        unsigned int channel_idx;
@@ -51,7 +52,6 @@ struct ipw_tty {
        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;
@@ -100,10 +100,10 @@ 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;
        linux_tty->driver_data = tty;
@@ -119,9 +119,9 @@ 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) {
+       if (tty->port.count == 0) {
                struct tty_struct *linux_tty = tty->linux_tty;
 
                if (linux_tty != NULL) {
@@ -142,7 +142,7 @@ 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;
        }
@@ -171,7 +171,7 @@ void ipwireless_tty_received(struct ipw_tty *tty, unsigned char *data,
                return;
        }
 
-       if (!tty->open_count) {
+       if (!tty->port.count) {
                mutex_unlock(&tty->ipw_tty_mutex);
                return;
        }
@@ -213,7 +213,7 @@ 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;
        }
@@ -253,7 +253,7 @@ 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;
@@ -295,7 +295,7 @@ 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;
@@ -376,7 +376,7 @@ 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);
@@ -392,7 +392,7 @@ 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);
@@ -406,7 +406,7 @@ 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 .. */
@@ -475,6 +475,7 @@ 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]);
@@ -561,7 +562,7 @@ void ipwireless_tty_free(struct ipw_tty *tty)
                                 * 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);