x86: fix ktermios-termio conversion

The legacy TCSETA{,W,F} ioctls failed to set the termio->c_line field
on x86. This adds a missing get_user.

The same ioctls also fail to report faulting user pointers, which
we keep ignoring.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/arch/x86/include/asm/termios.h b/arch/x86/include/asm/termios.h
index f729563..c4ee805 100644 (file)
--- a/arch/x86/include/asm/termios.h
+++ b/arch/x86/include/asm/termios.h
@@ -67,6 +67,7 @@ static inline int user_termio_to_kernel_termios(struct ktermios *termios,
        SET_LOW_TERMIOS_BITS(termios, termio, c_oflag);
        SET_LOW_TERMIOS_BITS(termios, termio, c_cflag);
        SET_LOW_TERMIOS_BITS(termios, termio, c_lflag);
+       get_user(termios->c_line, &termio->c_line);
        return copy_from_user(termios->c_cc, termio->c_cc, NCC);
 }