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| author | Alan Cox <alan@redhat.com> | 2008-10-13 11:37:07 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-10-13 18:51:40 +0200 |
| commit | 9e48565d217a8a96cc7577308ad41e9e4b806a62 (patch) | |
| tree | 2ff5f745d72e0d33a93cdc51622f011f0031eb76 /drivers/char/tty_io.c | |
| parent | tty: split the buffering from tty_io (diff) | |
| download | linux-9e48565d217a8a96cc7577308ad41e9e4b806a62.tar.xz linux-9e48565d217a8a96cc7577308ad41e9e4b806a62.zip | |
tty: Split tty_port into its own file
Not much in it yet but this will grow a lot
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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"; /** |