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tty: serial - fix tty back references in termios

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One or two drivers go poking back into the tty from the termios setting
routine in unsafe ways. We don't need to pass the tty down because the
[ab]users are just using it to get at things they can get at anyway.

This leaves low_latency setting to sort out along with set_ldisc use.

Signed-off-by: Alan Cox <alan@linux.intel.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Alan Cox
2010-06-01 22:52:52 +02:00
committed by Greg Kroah-Hartman
parent 192251352f
commit eab4f5af6b
5 changed files with 19 additions and 26 deletions
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9
drivers/serial/ioc4_serial.c
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@@ -1685,11 +1685,12 @@ ioc4_change_speed(struct uart_port *the_port,
{
struct ioc4_port *port = get_ioc4_port(the_port, 0);
int baud, bits;
unsigned cflag;
unsigned cflag, iflag;
int new_parity = 0, new_parity_enable = 0, new_stop = 0, new_data = 8;
struct uart_state *state = the_port->state;
cflag = new_termios->c_cflag;
iflag = new_termios->c_iflag;
switch (cflag & CSIZE) {
case CS5:
@@ -1741,12 +1742,12 @@ ioc4_change_speed(struct uart_port *the_port,
state->port.tty->low_latency = 1;
if (I_IGNPAR(state->port.tty))
if (iflag & IGNPAR)
the_port->ignore_status_mask &= ~(N_PARITY_ERROR
| N_FRAMING_ERROR);
if (I_IGNBRK(state->port.tty)) {
if (iflag & IGNBRK) {
the_port->ignore_status_mask &= ~N_BREAK;
if (I_IGNPAR(state->port.tty))
if (iflag & IGNPAR)
the_port->ignore_status_mask &= ~N_OVERRUN_ERROR;
}
if (!(cflag & CREAD)) {