diff options
Diffstat (limited to 'drivers/tty/tty_buffer.c')
| -rw-r--r-- | drivers/tty/tty_buffer.c | 28 |
1 files changed, 0 insertions, 28 deletions
diff --git a/drivers/tty/tty_buffer.c b/drivers/tty/tty_buffer.c index e8f22f833b4e..6a3620e1cc7a 100644 --- a/drivers/tty/tty_buffer.c +++ b/drivers/tty/tty_buffer.c @@ -373,34 +373,6 @@ int tty_prepare_flip_string(struct tty_port *port, unsigned char **chars, } EXPORT_SYMBOL_GPL(tty_prepare_flip_string); -/** - * tty_prepare_flip_string_flags - make room for characters - * @port: tty port - * @chars: return pointer for character write area - * @flags: return pointer for status flag write area - * @size: desired size - * - * Prepare a block of space in the buffer for data. Returns the length - * available and buffer pointer to the space which is now allocated and - * accounted for as ready for characters. This is used for drivers - * that need their own block copy routines into the buffer. There is no - * guarantee the buffer is a DMA target! - */ - -int tty_prepare_flip_string_flags(struct tty_port *port, - unsigned char **chars, char **flags, size_t size) -{ - int space = tty_buffer_request_room(port, size); - if (likely(space)) { - struct tty_buffer *tb = port->buf.tail; - *chars = char_buf_ptr(tb, tb->used); - *flags = flag_buf_ptr(tb, tb->used); - tb->used += space; - } - return space; -} -EXPORT_SYMBOL_GPL(tty_prepare_flip_string_flags); - static int receive_buf(struct tty_struct *tty, struct tty_buffer *head, int count) |