diff options
Diffstat (limited to 'drivers/tty/tty_io.c')
| -rw-r--r-- | drivers/tty/tty_io.c | 15 |
1 files changed, 3 insertions, 12 deletions
diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c index 2ea176b2280e..a3eba7f359ed 100644 --- a/drivers/tty/tty_io.c +++ b/drivers/tty/tty_io.c @@ -186,7 +186,6 @@ void free_tty_struct(struct tty_struct *tty) if (tty->dev) put_device(tty->dev); kfree(tty->write_buf); - tty_buffer_free_all(tty); tty->magic = 0xDEADDEAD; kfree(tty); } @@ -1417,6 +1416,8 @@ struct tty_struct *tty_init_dev(struct tty_driver *driver, int idx) "%s: %s driver does not set tty->port. This will crash the kernel later. Fix the driver!\n", __func__, tty->driver->name); + tty->port->itty = tty; + /* * Structures all installed ... call the ldisc open routines. * If we fail here just call release_tty to clean up. No need @@ -1552,6 +1553,7 @@ static void release_tty(struct tty_struct *tty, int idx) tty->ops->shutdown(tty); tty_free_termios(tty); tty_driver_remove_tty(tty->driver, tty); + tty->port->itty = NULL; if (tty->link) tty_kref_put(tty->link); @@ -1625,7 +1627,6 @@ int tty_release(struct inode *inode, struct file *filp) struct tty_struct *tty = file_tty(filp); struct tty_struct *o_tty; int pty_master, tty_closing, o_tty_closing, do_sleep; - int devpts; int idx; char buf[64]; @@ -1640,7 +1641,6 @@ int tty_release(struct inode *inode, struct file *filp) idx = tty->index; pty_master = (tty->driver->type == TTY_DRIVER_TYPE_PTY && tty->driver->subtype == PTY_TYPE_MASTER); - devpts = (tty->driver->flags & TTY_DRIVER_DEVPTS_MEM) != 0; /* Review: parallel close */ o_tty = tty->link; @@ -1799,9 +1799,6 @@ int tty_release(struct inode *inode, struct file *filp) release_tty(tty, idx); mutex_unlock(&tty_mutex); - /* Make this pty number available for reallocation */ - if (devpts) - devpts_kill_index(inode, idx); return 0; } @@ -2937,19 +2934,13 @@ void initialize_tty_struct(struct tty_struct *tty, tty_ldisc_init(tty); tty->session = NULL; tty->pgrp = NULL; - tty->overrun_time = jiffies; - tty_buffer_init(tty); mutex_init(&tty->legacy_mutex); mutex_init(&tty->termios_mutex); mutex_init(&tty->ldisc_mutex); init_waitqueue_head(&tty->write_wait); init_waitqueue_head(&tty->read_wait); INIT_WORK(&tty->hangup_work, do_tty_hangup); - mutex_init(&tty->atomic_read_lock); mutex_init(&tty->atomic_write_lock); - mutex_init(&tty->output_lock); - mutex_init(&tty->echo_lock); - spin_lock_init(&tty->read_lock); spin_lock_init(&tty->ctrl_lock); INIT_LIST_HEAD(&tty->tty_files); INIT_WORK(&tty->SAK_work, do_SAK_work); |