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Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6

Browse Source 
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6:
  tty: fix race in tty_fasync
  serial: serial_cs: oxsemi quirk breaks resume
  serial: imx: bit &/| confusion
  serial: Fix crash if the minimum rate of the device is > 9600 baud
  serial-core: resume serial hardware with no_console_suspend
  serial: 8250_pnp: use wildcard for serial Wacom tablets
  nozomi: quick fix for the close/close bug
  compat_ioctl: Supress "unknown cmd" message on serial /dev/console
This commit is contained in:
Linus Torvalds 2010-01-21 07:37:20 -08:00
commit bdeef61cd0
7 changed files with 54 additions and 73 deletions
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2
drivers/char/nozomi.c
View File

@ -1651,10 +1651,10 @@ static void ntty_close(struct tty_struct *tty, struct file *file)
dc->open_ttys--;
port->count--;
tty_port_tty_set(port, NULL);
if (port->count == 0) {
DBG1("close: %d", nport->token_dl);
tty_port_tty_set(port, NULL);
spin_lock_irqsave(&dc->spin_mutex, flags);
dc->last_ier &= ~(nport->token_dl);
writew(dc->last_ier, dc->reg_ier);

2
drivers/char/tty_io.c
View File

@ -1951,8 +1951,8 @@ static int tty_fasync(int fd, struct file *filp, int on)
pid = task_pid(current);
type = PIDTYPE_PID;
}
spin_unlock_irqrestore(&tty->ctrl_lock, flags);
retval = __f_setown(filp, pid, type, 0);
spin_unlock_irqrestore(&tty->ctrl_lock, flags);
if (retval)
goto out;
} else {

10
drivers/serial/8250_pnp.c
View File

@ -328,15 +328,7 @@ static const struct pnp_device_id pnp_dev_table[] = {
/* U.S. Robotics 56K Voice INT PnP*/
{ "USR9190", 0 },
/* Wacom tablets */
{ "WACF004", 0 },
{ "WACF005", 0 },
{ "WACF006", 0 },
{ "WACF007", 0 },
{ "WACF008", 0 },
{ "WACF009", 0 },
{ "WACF00A", 0 },
{ "WACF00B", 0 },
{ "WACF00C", 0 },
{ "WACFXXX", 0 },
/* Compaq touchscreen */
{ "FPI2002", 0 },
/* Fujitsu Stylistic touchscreens */

2
drivers/serial/imx.c
View File

@ -1088,7 +1088,7 @@ imx_console_get_options(struct imx_port *sport, int *baud,
int *parity, int *bits)
{
if ( readl(sport->port.membase + UCR1) | UCR1_UARTEN ) {
if (readl(sport->port.membase + UCR1) & UCR1_UARTEN) {
/* ok, the port was enabled */
unsigned int ucr2, ubir,ubmr, uartclk;
unsigned int baud_raw;

105
drivers/serial/serial_core.c
View File

@ -385,13 +385,20 @@ uart_get_baud_rate(struct uart_port *port, struct ktermios *termios,
}
/*
* As a last resort, if the quotient is zero,
* default to 9600 bps
* As a last resort, if the range cannot be met then clip to
* the nearest chip supported rate.
*/
if (!hung_up)
tty_termios_encode_baud_rate(termios, 9600, 9600);
if (!hung_up) {
if (baud <= min)
tty_termios_encode_baud_rate(termios,
min + 1, min + 1);
else
tty_termios_encode_baud_rate(termios,
max - 1, max - 1);
}
}
/* Should never happen */
WARN_ON(1);
return 0;
}
@ -2006,12 +2013,6 @@ int uart_suspend_port(struct uart_driver *drv, struct uart_port *uport)
mutex_lock(&port->mutex);
if (!console_suspend_enabled && uart_console(uport)) {
/* we're going to avoid suspending serial console */
mutex_unlock(&port->mutex);
return 0;
}
tty_dev = device_find_child(uport->dev, &match, serial_match_port);
if (device_may_wakeup(tty_dev)) {
enable_irq_wake(uport->irq);
@ -2019,20 +2020,23 @@ int uart_suspend_port(struct uart_driver *drv, struct uart_port *uport)
mutex_unlock(&port->mutex);
return 0;
}
uport->suspended = 1;
if (console_suspend_enabled || !uart_console(uport))
uport->suspended = 1;
if (port->flags & ASYNC_INITIALIZED) {
const struct uart_ops *ops = uport->ops;
int tries;
set_bit(ASYNCB_SUSPENDED, &port->flags);
clear_bit(ASYNCB_INITIALIZED, &port->flags);
if (console_suspend_enabled || !uart_console(uport)) {
set_bit(ASYNCB_SUSPENDED, &port->flags);
clear_bit(ASYNCB_INITIALIZED, &port->flags);
spin_lock_irq(&uport->lock);
ops->stop_tx(uport);
ops->set_mctrl(uport, 0);
ops->stop_rx(uport);
spin_unlock_irq(&uport->lock);
spin_lock_irq(&uport->lock);
ops->stop_tx(uport);
ops->set_mctrl(uport, 0);
ops->stop_rx(uport);
spin_unlock_irq(&uport->lock);
}
/*
* Wait for the transmitter to empty.
@ -2047,16 +2051,18 @@ int uart_suspend_port(struct uart_driver *drv, struct uart_port *uport)
drv->dev_name,
drv->tty_driver->name_base + uport->line);
ops->shutdown(uport);
if (console_suspend_enabled || !uart_console(uport))
ops->shutdown(uport);
}
/*
* Disable the console device before suspending.
*/
if (uart_console(uport))
if (console_suspend_enabled && uart_console(uport))
console_stop(uport->cons);
uart_change_pm(state, 3);
if (console_suspend_enabled || !uart_console(uport))
uart_change_pm(state, 3);
mutex_unlock(&port->mutex);
@ -2073,29 +2079,6 @@ int uart_resume_port(struct uart_driver *drv, struct uart_port *uport)
mutex_lock(&port->mutex);
if (!console_suspend_enabled && uart_console(uport)) {
/* no need to resume serial console, it wasn't suspended */
/*
* First try to use the console cflag setting.
*/
memset(&termios, 0, sizeof(struct ktermios));
termios.c_cflag = uport->cons->cflag;
/*
* If that's unset, use the tty termios setting.
*/
if (termios.c_cflag == 0)
termios = *state->port.tty->termios;
else {
termios.c_ispeed = termios.c_ospeed =
tty_termios_input_baud_rate(&termios);
termios.c_ispeed = termios.c_ospeed =
tty_termios_baud_rate(&termios);
}
uport->ops->set_termios(uport, &termios, NULL);
mutex_unlock(&port->mutex);
return 0;
}
tty_dev = device_find_child(uport->dev, &match, serial_match_port);
if (!uport->suspended && device_may_wakeup(tty_dev)) {
disable_irq_wake(uport->irq);
@ -2121,21 +2104,23 @@ int uart_resume_port(struct uart_driver *drv, struct uart_port *uport)
spin_lock_irq(&uport->lock);
ops->set_mctrl(uport, 0);
spin_unlock_irq(&uport->lock);
ret = ops->startup(uport);
if (ret == 0) {
uart_change_speed(state, NULL);
spin_lock_irq(&uport->lock);
ops->set_mctrl(uport, uport->mctrl);
ops->start_tx(uport);
spin_unlock_irq(&uport->lock);
set_bit(ASYNCB_INITIALIZED, &port->flags);
} else {
/*
* Failed to resume - maybe hardware went away?
* Clear the "initialized" flag so we won't try
* to call the low level drivers shutdown method.
*/
uart_shutdown(state);
if (console_suspend_enabled || !uart_console(uport)) {
ret = ops->startup(uport);
if (ret == 0) {
uart_change_speed(state, NULL);
spin_lock_irq(&uport->lock);
ops->set_mctrl(uport, uport->mctrl);
ops->start_tx(uport);
spin_unlock_irq(&uport->lock);
set_bit(ASYNCB_INITIALIZED, &port->flags);
} else {
/*
* Failed to resume - maybe hardware went away?
* Clear the "initialized" flag so we won't try
* to call the low level drivers shutdown method.
*/
uart_shutdown(state);
}
}
clear_bit(ASYNCB_SUSPENDED, &port->flags);

3
drivers/serial/serial_cs.c
View File

@ -146,7 +146,8 @@ static void quirk_wakeup_oxsemi(struct pcmcia_device *link)
{
struct serial_info *info = link->priv;
outb(12, info->c950ctrl + 1);
if (info->c950ctrl)
outb(12, info->c950ctrl + 1);
}
/* request_region? oxsemi branch does no request_region too... */

3
fs/compat_ioctl.c
View File

@ -1005,6 +1005,9 @@ COMPATIBLE_IOCTL(SCSI_IOCTL_SEND_COMMAND)
COMPATIBLE_IOCTL(SCSI_IOCTL_PROBE_HOST)
COMPATIBLE_IOCTL(SCSI_IOCTL_GET_PCI)
#endif
/* Big V (don't complain on serial console) */
IGNORE_IOCTL(VT_OPENQRY)
IGNORE_IOCTL(VT_GETMODE)
/* Little p (/dev/rtc, /dev/envctrl, etc.) */
COMPATIBLE_IOCTL(RTC_AIE_ON)
COMPATIBLE_IOCTL(RTC_AIE_OFF)