static int send_break(struct tty_struct *tty, unsigned int duration)
{
- if (tty_write_lock(tty, 0) < 0)
- return -EINTR;
- tty->ops->break_ctl(tty, -1);
- if (!signal_pending(current))
- msleep_interruptible(duration);
- tty->ops->break_ctl(tty, 0);
- tty_write_unlock(tty);
- if (signal_pending(current))
- return -EINTR;
- return 0;
+ int retval;
+
+ if (tty->ops->break_ctl == NULL)
+ return 0;
+
+ if (tty->driver->flags & TTY_DRIVER_HARDWARE_BREAK)
+ retval = tty->ops->break_ctl(tty, duration);
+ else {
+ /* Do the work ourselves */
+ if (tty_write_lock(tty, 0) < 0)
+ return -EINTR;
+ retval = tty->ops->break_ctl(tty, -1);
+ if (retval)
+ goto out;
+ if (!signal_pending(current))
+ msleep_interruptible(duration);
+ retval = tty->ops->break_ctl(tty, 0);
+out:
+ tty_write_unlock(tty);
+ if (signal_pending(current))
+ retval = -EINTR;
+ }
+ return retval;
}
/**
tty->driver->subtype == PTY_TYPE_MASTER)
real_tty = tty->link;
- /*
- * Break handling by driver
- */
-
- retval = -EINVAL;
-
- if (!tty->ops->break_ctl) {
- switch (cmd) {
- case TIOCSBRK:
- case TIOCCBRK:
- if (tty->ops->ioctl)
- retval = tty->ops->ioctl(tty, file, cmd, arg);
- if (retval != -EINVAL && retval != -ENOIOCTLCMD)
- printk(KERN_WARNING "tty: driver %s needs updating to use break_ctl\n", tty->driver->name);
- return retval;
-
- /* These two ioctl's always return success; even if */
- /* the driver doesn't support them. */
- case TCSBRK:
- case TCSBRKP:
- if (!tty->ops->ioctl)
- return 0;
- retval = tty->ops->ioctl(tty, file, cmd, arg);
- if (retval != -EINVAL && retval != -ENOIOCTLCMD)
- printk(KERN_WARNING "tty: driver %s needs updating to use break_ctl\n", tty->driver->name);
- if (retval == -ENOIOCTLCMD)
- retval = 0;
- return retval;
- }
- }
/*
* Factor out some common prep work
break;
}
+ /*
+ * Now do the stuff.
+ */
switch (cmd) {
case TIOCSTI:
return tiocsti(tty, p);
*/
case TIOCSBRK: /* Turn break on, unconditionally */
if (tty->ops->break_ctl)
- tty->ops->break_ctl(tty, -1);
+ return tty->ops->break_ctl(tty, -1);
return 0;
-
case TIOCCBRK: /* Turn break off, unconditionally */
if (tty->ops->break_ctl)
- tty->ops->break_ctl(tty, 0);
+ return tty->ops->break_ctl(tty, 0);
return 0;
case TCSBRK: /* SVID version: non-zero arg --> no break */
/* non-zero arg means wait for all output data
else
tty_line_name(driver, index, name);
- return device_create(tty_class, device, dev, name);
+ return device_create_drvdata(tty_class, device, dev, NULL, name);
}
/**
if (cdev_add(&tty_cdev, MKDEV(TTYAUX_MAJOR, 0), 1) ||
register_chrdev_region(MKDEV(TTYAUX_MAJOR, 0), 1, "/dev/tty") < 0)
panic("Couldn't register /dev/tty driver\n");
- device_create(tty_class, NULL, MKDEV(TTYAUX_MAJOR, 0), "tty");
+ device_create_drvdata(tty_class, NULL, MKDEV(TTYAUX_MAJOR, 0), NULL,
+ "tty");
cdev_init(&console_cdev, &console_fops);
if (cdev_add(&console_cdev, MKDEV(TTYAUX_MAJOR, 1), 1) ||
register_chrdev_region(MKDEV(TTYAUX_MAJOR, 1), 1, "/dev/console") < 0)
panic("Couldn't register /dev/console driver\n");
- device_create(tty_class, NULL, MKDEV(TTYAUX_MAJOR, 1), "console");
+ device_create_drvdata(tty_class, NULL, MKDEV(TTYAUX_MAJOR, 1), NULL,
+ "console");
#ifdef CONFIG_UNIX98_PTYS
cdev_init(&ptmx_cdev, &ptmx_fops);
if (cdev_add(&ptmx_cdev, MKDEV(TTYAUX_MAJOR, 2), 1) ||
register_chrdev_region(MKDEV(TTYAUX_MAJOR, 2), 1, "/dev/ptmx") < 0)
panic("Couldn't register /dev/ptmx driver\n");
- device_create(tty_class, NULL, MKDEV(TTYAUX_MAJOR, 2), "ptmx");
+ device_create_drvdata(tty_class, NULL, MKDEV(TTYAUX_MAJOR, 2), NULL, "ptmx");
#endif
#ifdef CONFIG_VT
if (cdev_add(&vc0_cdev, MKDEV(TTY_MAJOR, 0), 1) ||
register_chrdev_region(MKDEV(TTY_MAJOR, 0), 1, "/dev/vc/0") < 0)
panic("Couldn't register /dev/tty0 driver\n");
- device_create(tty_class, NULL, MKDEV(TTY_MAJOR, 0), "tty0");
+ device_create_drvdata(tty_class, NULL, MKDEV(TTY_MAJOR, 0), NULL, "tty0");
vty_init();
#endif