diff options
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/tty_io.c | 40 |
1 files changed, 20 insertions, 20 deletions
diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c index de4543ee290b..8e9651579d50 100644 --- a/drivers/tty/tty_io.c +++ b/drivers/tty/tty_io.c @@ -3293,9 +3293,8 @@ struct device *tty_register_device_attr(struct tty_driver *driver, { char name[64]; dev_t devt = MKDEV(driver->major, driver->minor_start) + index; - struct device *dev = NULL; - int retval = -ENODEV; - bool cdev = false; + struct device *dev; + int retval; if (index >= driver->num) { pr_err("%s: Attempt to register invalid tty line number (%d)\n", @@ -3308,18 +3307,9 @@ struct device *tty_register_device_attr(struct tty_driver *driver, else tty_line_name(driver, index, name); - if (!(driver->flags & TTY_DRIVER_DYNAMIC_ALLOC)) { - retval = tty_cdev_add(driver, devt, index, 1); - if (retval) - goto error; - cdev = true; - } - dev = kzalloc(sizeof(*dev), GFP_KERNEL); - if (!dev) { - retval = -ENOMEM; - goto error; - } + if (!dev) + return ERR_PTR(-ENOMEM); dev->devt = devt; dev->class = tty_class; @@ -3329,18 +3319,28 @@ struct device *tty_register_device_attr(struct tty_driver *driver, dev->groups = attr_grp; dev_set_drvdata(dev, drvdata); + dev_set_uevent_suppress(dev, 1); + retval = device_register(dev); if (retval) - goto error; + goto err_put; + + if (!(driver->flags & TTY_DRIVER_DYNAMIC_ALLOC)) { + retval = tty_cdev_add(driver, devt, index, 1); + if (retval) + goto err_del; + } + + dev_set_uevent_suppress(dev, 0); + kobject_uevent(&dev->kobj, KOBJ_ADD); return dev; -error: +err_del: + device_del(dev); +err_put: put_device(dev); - if (cdev) { - cdev_del(driver->cdevs[index]); - driver->cdevs[index] = NULL; - } + return ERR_PTR(retval); } EXPORT_SYMBOL_GPL(tty_register_device_attr); |