tty: Fix TIOCGPTPEER ioctl definition
This ioctl does nothing to justify an _IOC_READ or _IOC_WRITE flag because it doesn't copy anything from/to userspace to access the argument. Fixes: 54ebbfb1 ("tty: add TIOCGPTPEER ioctl") Signed-off-by: NGleb Fotengauer-Malinovskiy <glebfm@altlinux.org> Acked-by: NAleksa Sarai <asarai@suse.de> Acked-by: NArnd Bergmann <arnd@arndb.de> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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