static int pty_chars_in_buffer(struct tty_struct *tty)
{
struct tty_struct *to = tty->link;
- ssize_t (*chars_in_buffer)(struct tty_struct *);
int count;
/* We should get the line discipline lock for "tty->link" */
- if (!to || !(chars_in_buffer = to->ldisc.chars_in_buffer))
+ if (!to || !to->ldisc.chars_in_buffer)
return 0;
/* The ldisc must report 0 if no characters available to be read */
- count = chars_in_buffer(to);
+ count = to->ldisc.chars_in_buffer(to);
if (tty->driver->subtype == PTY_TYPE_SLAVE) return count;