diff options
Diffstat (limited to 'drivers/char/tty_io.c')
| -rw-r--r-- | drivers/char/tty_io.c | 36 |
1 files changed, 0 insertions, 36 deletions
diff --git a/drivers/char/tty_io.c b/drivers/char/tty_io.c index 3a726936aa5b..732316899ca4 100644 --- a/drivers/char/tty_io.c +++ b/drivers/char/tty_io.c @@ -1139,42 +1139,6 @@ ssize_t redirected_tty_write(struct file *file, const char __user *buf, return tty_write(file, buf, count, ppos); } -void tty_port_init(struct tty_port *port) -{ - memset(port, 0, sizeof(*port)); - init_waitqueue_head(&port->open_wait); - init_waitqueue_head(&port->close_wait); - mutex_init(&port->mutex); - port->close_delay = (50 * HZ) / 100; - port->closing_wait = (3000 * HZ) / 100; -} -EXPORT_SYMBOL(tty_port_init); - -int tty_port_alloc_xmit_buf(struct tty_port *port) -{ - /* We may sleep in get_zeroed_page() */ - mutex_lock(&port->mutex); - if (port->xmit_buf == NULL) - port->xmit_buf = (unsigned char *)get_zeroed_page(GFP_KERNEL); - mutex_unlock(&port->mutex); - if (port->xmit_buf == NULL) - return -ENOMEM; - return 0; -} -EXPORT_SYMBOL(tty_port_alloc_xmit_buf); - -void tty_port_free_xmit_buf(struct tty_port *port) -{ - mutex_lock(&port->mutex); - if (port->xmit_buf != NULL) { - free_page((unsigned long)port->xmit_buf); - port->xmit_buf = NULL; - } - mutex_unlock(&port->mutex); -} -EXPORT_SYMBOL(tty_port_free_xmit_buf); - - static char ptychar[] = "pqrstuvwxyzabcde"; /** |