diff options
| -rw-r--r-- | drivers/char/tty_io.c | 11 | ||||
| -rw-r--r-- | include/linux/tty.h | 4 |
2 files changed, 10 insertions, 5 deletions
diff --git a/drivers/char/tty_io.c b/drivers/char/tty_io.c index a88b94a82b14..8b2a59969868 100644 --- a/drivers/char/tty_io.c +++ b/drivers/char/tty_io.c @@ -2961,12 +2961,14 @@ static struct class *tty_class; * This field is optional, if there is no known struct device for this * tty device it can be set to NULL safely. * + * Returns a pointer to the class device (or ERR_PTR(-EFOO) on error). + * * This call is required to be made to register an individual tty device if * the tty driver's flags have the TTY_DRIVER_NO_DEVFS bit set. If that * bit is not set, this function should not be called. */ -void tty_register_device(struct tty_driver *driver, unsigned index, - struct device *device) +struct class_device *tty_register_device(struct tty_driver *driver, + unsigned index, struct device *device) { char name[64]; dev_t dev = MKDEV(driver->major, driver->minor_start) + index; @@ -2974,7 +2976,7 @@ void tty_register_device(struct tty_driver *driver, unsigned index, if (index >= driver->num) { printk(KERN_ERR "Attempt to register invalid tty line number " " (%d).\n", index); - return; + return ERR_PTR(-EINVAL); } devfs_mk_cdev(dev, S_IFCHR | S_IRUSR | S_IWUSR, @@ -2984,7 +2986,8 @@ void tty_register_device(struct tty_driver *driver, unsigned index, pty_line_name(driver, index, name); else tty_line_name(driver, index, name); - class_device_create(tty_class, NULL, dev, device, "%s", name); + + return class_device_create(tty_class, NULL, dev, device, "%s", name); } /** diff --git a/include/linux/tty.h b/include/linux/tty.h index e898eeb94166..cb35ca50a0a6 100644 --- a/include/linux/tty.h +++ b/include/linux/tty.h @@ -290,7 +290,9 @@ extern int tty_register_ldisc(int disc, struct tty_ldisc *new_ldisc); extern int tty_unregister_ldisc(int disc); extern int tty_register_driver(struct tty_driver *driver); extern int tty_unregister_driver(struct tty_driver *driver); -extern void tty_register_device(struct tty_driver *driver, unsigned index, struct device *dev); +extern struct class_device *tty_register_device(struct tty_driver *driver, + unsigned index, + struct device *dev); extern void tty_unregister_device(struct tty_driver *driver, unsigned index); extern int tty_read_raw_data(struct tty_struct *tty, unsigned char *bufp, int buflen); |