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tty: move the termios object into the tty

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This will let us sort out a whole pile of tty related races. The
alternative would be to keep points and refcount the termios objects.
However
1. They are tiny anyway
2. Many devices don't use the stored copies
3. We can remove a pty special case

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Alan Cox
2012-07-14 15:31:47 +01:00
committed by Greg Kroah-Hartman
parent 6d31a88cb2
commit adc8d746ca
65 changed files with 408 additions and 434 deletions
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10
drivers/tty/tty_ldisc.c
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@@ -413,7 +413,7 @@ EXPORT_SYMBOL_GPL(tty_ldisc_flush);
static void tty_set_termios_ldisc(struct tty_struct *tty, int num)
{
mutex_lock(&tty->termios_mutex);
tty->termios->c_line = num;
tty->termios.c_line = num;
mutex_unlock(&tty->termios_mutex);
}
@@ -722,9 +722,9 @@ enable:
static void tty_reset_termios(struct tty_struct *tty)
{
mutex_lock(&tty->termios_mutex);
*tty->termios = tty->driver->init_termios;
tty->termios->c_ispeed = tty_termios_input_baud_rate(tty->termios);
tty->termios->c_ospeed = tty_termios_baud_rate(tty->termios);
tty->termios = tty->driver->init_termios;
tty->termios.c_ispeed = tty_termios_input_baud_rate(&tty->termios);
tty->termios.c_ospeed = tty_termios_baud_rate(&tty->termios);
mutex_unlock(&tty->termios_mutex);
}
@@ -846,7 +846,7 @@ retry:
if (reset == 0) {
if (!tty_ldisc_reinit(tty, tty->termios->c_line))
if (!tty_ldisc_reinit(tty, tty->termios.c_line))
err = tty_ldisc_open(tty, tty->ldisc);
else
err = 1;