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serial: core: Pass termios to set_ldisc() notifications 

UART drivers which enable modem status interrupts when switching
to N_PPS line discipline need to determine if modem status
interrupts should be disabled when switching from N_PPS.
Specifically, the set_ldisc() notification needs to evaluate
UART_ENABLE_MS() which requires termios->c_cflag.

Convert in-tree UART drivers to new interface.

Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
hifive-unleashed-5.1
Peter Hurley 2014-11-05 13:11:43 -05:00 committed by Greg Kroah-Hartman
parent db1b9dfcd6
commit 732a84a037
7 changed files with 14 additions and 12 deletions
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4
drivers/tty/serial/8250/8250_core.c
View File

@ -2609,9 +2609,9 @@ serial8250_set_termios(struct uart_port *port, struct ktermios *termios,
}
static void
serial8250_set_ldisc(struct uart_port *port, int new)
serial8250_set_ldisc(struct uart_port *port, struct ktermios *termios)
{
if (new == N_PPS) {
if (termios->c_line == N_PPS) {
port->flags |= UPF_HARDPPS_CD;
serial8250_enable_ms(port);
} else

4
drivers/tty/serial/amba-pl010.c
View File

@ -479,9 +479,9 @@ pl010_set_termios(struct uart_port *port, struct ktermios *termios,
spin_unlock_irqrestore(&uap->port.lock, flags);
}
static void pl010_set_ldisc(struct uart_port *port, int new)
static void pl010_set_ldisc(struct uart_port *port, struct ktermios *termios)
{
if (new == N_PPS) {
if (termios->c_line == N_PPS) {
port->flags |= UPF_HARDPPS_CD;
pl010_enable_ms(port);
} else

4
drivers/tty/serial/atmel_serial.c
View File

@ -2056,9 +2056,9 @@ static void atmel_set_termios(struct uart_port *port, struct ktermios *termios,
spin_unlock_irqrestore(&port->lock, flags);
}
static void atmel_set_ldisc(struct uart_port *port, int new)
static void atmel_set_ldisc(struct uart_port *port, struct ktermios *termios)
{
if (new == N_PPS) {
if (termios->c_line == N_PPS) {
port->flags |= UPF_HARDPPS_CD;
atmel_enable_ms(port);
} else {

5
drivers/tty/serial/bfin_uart.c
View File

@ -944,12 +944,13 @@ bfin_serial_verify_port(struct uart_port *port, struct serial_struct *ser)
* Enable the IrDA function if tty->ldisc.num is N_IRDA.
* In other cases, disable IrDA function.
*/
static void bfin_serial_set_ldisc(struct uart_port *port, int ld)
static void bfin_serial_set_ldisc(struct uart_port *port,
struct ktermios *termios)
{
struct bfin_serial_port *uart = (struct bfin_serial_port *)port;
unsigned int val;
switch (ld) {
switch (termios->c_line) {
case N_IRDA:
val = UART_GET_GCTL(uart);
val |= (UMOD_IRDA | RPOLC);

5
drivers/tty/serial/clps711x.c
View File

@ -225,13 +225,14 @@ static void uart_clps711x_break_ctl(struct uart_port *port, int break_state)
writel(ubrlcr, port->membase + UBRLCR_OFFSET);
}
static void uart_clps711x_set_ldisc(struct uart_port *port, int ld)
static void uart_clps711x_set_ldisc(struct uart_port *port,
struct ktermios *termios)
{
if (!port->line) {
struct clps711x_port *s = dev_get_drvdata(port->dev);
regmap_update_bits(s->syscon, SYSCON_OFFSET, SYSCON1_SIREN,
(ld == N_IRDA) ? SYSCON1_SIREN : 0);
(termios->c_line == N_IRDA) ? SYSCON1_SIREN : 0);
}
}

2
drivers/tty/serial/serial_core.c
View File

@ -1247,7 +1247,7 @@ static void uart_set_ldisc(struct tty_struct *tty)
if (uport->ops->set_ldisc) {
mutex_lock(&state->port.mutex);
uport->ops->set_ldisc(uport, tty->termios.c_line);
uport->ops->set_ldisc(uport, &tty->termios);
mutex_unlock(&state->port.mutex);
}
}

2
include/linux/serial_core.h
View File

@ -63,7 +63,7 @@ struct uart_ops {
void (*flush_buffer)(struct uart_port *);
void (*set_termios)(struct uart_port *, struct ktermios *new,
struct ktermios *old);
void (*set_ldisc)(struct uart_port *, int new);
void (*set_ldisc)(struct uart_port *, struct ktermios *);
void (*pm)(struct uart_port *, unsigned int state,
unsigned int oldstate);