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Pass initial cflag to device-specific implementation in constructor.

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This commit is contained in:
Florian Pose
2010-01-25 18:32:45 +01:00
parent 1177892a84
commit c6bf2d73fc
1 changed files with 39 additions and 19 deletions
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58
tty/module.c
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@@ -51,7 +51,7 @@
#define PFX "ec_tty: "
#define EC_TTY_MAX_DEVICES 10
#define EC_TTY_MAX_DEVICES 32
#define EC_TTY_TX_BUFFER_SIZE 100
#define EC_TTY_RX_BUFFER_SIZE 100
@@ -183,30 +183,50 @@ void __exit ec_tty_cleanup_module(void)
* ec_tty_t methods.
*****************************************************************************/
int ec_tty_init(ec_tty_t *tty, int minor,
int ec_tty_init(ec_tty_t *t, int minor,
const ec_tty_operations_t *ops, void *cb_data)
{
tty->minor = minor;
tty->tx_read_idx = 0;
tty->tx_write_idx = 0;
tty->wakeup = 0;
tty->rx_read_idx = 0;
tty->rx_write_idx = 0;
init_timer(&tty->timer);
tty->tty = NULL;
tty->ops = *ops;
tty->cb_data = cb_data;
int ret;
tcflag_t cflag;
struct tty_struct *tty;
tty->dev = tty_register_device(tty_driver, tty->minor, NULL);
if (IS_ERR(tty->dev)) {
t->minor = minor;
t->tx_read_idx = 0;
t->tx_write_idx = 0;
t->wakeup = 0;
t->rx_read_idx = 0;
t->rx_write_idx = 0;
init_timer(&t->timer);
t->tty = NULL;
t->ops = *ops;
t->cb_data = cb_data;
t->dev = tty_register_device(tty_driver, t->minor, NULL);
if (IS_ERR(t->dev)) {
printk(KERN_ERR PFX "Failed to register tty device.\n");
return PTR_ERR(tty->dev);
return PTR_ERR(t->dev);
}
tty->timer.function = ec_tty_wakeup;
tty->timer.data = (unsigned long) tty;
tty->timer.expires = jiffies + 10;
add_timer(&tty->timer);
// Tell the device-specific implementation about the initial cflags
tty = tty_driver->ttys[minor];
if (tty && tty->termios) { // already opened before
cflag = tty->termios->c_cflag;
} else {
cflag = tty_driver->init_termios.c_cflag;
}
ret = t->ops.cflag_changed(t->cb_data, cflag);
if (ret) {
printk(KERN_ERR PFX "ERROR: Initial cflag 0x%x not accepted.\n",
cflag);
tty_unregister_device(tty_driver, t->minor);
return ret;
}
t->timer.function = ec_tty_wakeup;
t->timer.data = (unsigned long) t;
t->timer.expires = jiffies + 10;
add_timer(&t->timer);
return 0;
}