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path: root/drivers/tty/hvc/hvc_console.c
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Diffstat (limited to 'drivers/tty/hvc/hvc_console.c')
-rw-r--r--drivers/tty/hvc/hvc_console.c31
1 files changed, 25 insertions, 6 deletions
diff --git a/drivers/tty/hvc/hvc_console.c b/drivers/tty/hvc/hvc_console.c
index 2d691eb7c40a..7f80f15681cd 100644
--- a/drivers/tty/hvc/hvc_console.c
+++ b/drivers/tty/hvc/hvc_console.c
@@ -299,20 +299,33 @@ static void hvc_unthrottle(struct tty_struct *tty)
hvc_kick();
}
+static int hvc_install(struct tty_driver *driver, struct tty_struct *tty)
+{
+ struct hvc_struct *hp;
+ int rc;
+
+ /* Auto increments kref reference if found. */
+ if (!(hp = hvc_get_by_index(tty->index)))
+ return -ENODEV;
+
+ tty->driver_data = hp;
+
+ rc = tty_port_install(&hp->port, driver, tty);
+ if (rc)
+ tty_port_put(&hp->port);
+ return rc;
+}
+
/*
* The TTY interface won't be used until after the vio layer has exposed the vty
* adapter to the kernel.
*/
static int hvc_open(struct tty_struct *tty, struct file * filp)
{
- struct hvc_struct *hp;
+ struct hvc_struct *hp = tty->driver_data;
unsigned long flags;
int rc = 0;
- /* Auto increments kref reference if found. */
- if (!(hp = hvc_get_by_index(tty->index)))
- return -ENODEV;
-
spin_lock_irqsave(&hp->port.lock, flags);
/* Check and then increment for fast path open. */
if (hp->port.count++ > 0) {
@@ -322,7 +335,6 @@ static int hvc_open(struct tty_struct *tty, struct file * filp)
} /* else count == 0 */
spin_unlock_irqrestore(&hp->port.lock, flags);
- tty->driver_data = hp;
tty_port_tty_set(&hp->port, tty);
if (hp->ops->notifier_add)
@@ -389,6 +401,11 @@ static void hvc_close(struct tty_struct *tty, struct file * filp)
hp->vtermno, hp->port.count);
spin_unlock_irqrestore(&hp->port.lock, flags);
}
+}
+
+static void hvc_cleanup(struct tty_struct *tty)
+{
+ struct hvc_struct *hp = tty->driver_data;
tty_port_put(&hp->port);
}
@@ -792,8 +809,10 @@ static void hvc_poll_put_char(struct tty_driver *driver, int line, char ch)
#endif
static const struct tty_operations hvc_ops = {
+ .install = hvc_install,
.open = hvc_open,
.close = hvc_close,
+ .cleanup = hvc_cleanup,
.write = hvc_write,
.hangup = hvc_hangup,
.unthrottle = hvc_unthrottle,