diff options
Diffstat (limited to 'drivers/tty/tty_io.c')
| -rw-r--r-- | drivers/tty/tty_io.c | 30 |
1 files changed, 0 insertions, 30 deletions
diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c index 7bfc8afc130a..ef2a8766d34f 100644 --- a/drivers/tty/tty_io.c +++ b/drivers/tty/tty_io.c @@ -2289,34 +2289,6 @@ static int tioccons(struct file *file) } /** - * fionbio - non blocking ioctl - * @file: file to set blocking value - * @p: user parameter - * - * Historical tty interfaces had a blocking control ioctl before - * the generic functionality existed. This piece of history is preserved - * in the expected tty API of posix OS's. - * - * Locking: none, the open file handle ensures it won't go away. - */ - -static int fionbio(struct file *file, int __user *p) -{ - int nonblock; - - if (get_user(nonblock, p)) - return -EFAULT; - - spin_lock(&file->f_lock); - if (nonblock) - file->f_flags |= O_NONBLOCK; - else - file->f_flags &= ~O_NONBLOCK; - spin_unlock(&file->f_lock); - return 0; -} - -/** * tiocsetd - set line discipline * @tty: tty device * @p: pointer to user data @@ -2562,8 +2534,6 @@ long tty_ioctl(struct file *file, unsigned int cmd, unsigned long arg) return tiocswinsz(real_tty, p); case TIOCCONS: return real_tty != tty ? -EINVAL : tioccons(file); - case FIONBIO: - return fionbio(file, p); case TIOCEXCL: set_bit(TTY_EXCLUSIVE, &tty->flags); return 0; |