diff options
| author | Jiri Slaby <[email protected]> | 2021-03-02 07:22:05 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <[email protected]> | 2021-03-10 09:34:09 +0100 |
| commit | a872ab4d6d191cca1ce84b945e394bd6a8d84dd9 (patch) | |
| tree | bf12a1be5a8d5fdca8ae92d92543991d6b748ded | |
| parent | 6c2e6317c975c3cef1e08482a6ed8b734831ffbe (diff) | |
tty: let tty_unregister_driver return void
Now that noone checks the return value, switch the return type of
tty_unregister_driver to void. We can do that as we always return zero.
Generally, drivers are not allowed to call tty_unregister_driver while
there are open devices.
Signed-off-by: Jiri Slaby <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
| -rw-r--r-- | drivers/tty/tty_io.c | 9 | ||||
| -rw-r--r-- | include/linux/tty.h | 2 |
2 files changed, 2 insertions, 9 deletions
diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c index 74733ec8f565..c8cbf08b6dcf 100644 --- a/drivers/tty/tty_io.c +++ b/drivers/tty/tty_io.c @@ -3525,21 +3525,14 @@ EXPORT_SYMBOL(tty_register_driver); /* * Called by a tty driver to unregister itself. */ -int tty_unregister_driver(struct tty_driver *driver) +void tty_unregister_driver(struct tty_driver *driver) { -#if 0 - /* FIXME */ - if (driver->refcount) - return -EBUSY; -#endif unregister_chrdev_region(MKDEV(driver->major, driver->minor_start), driver->num); mutex_lock(&tty_mutex); list_del(&driver->tty_drivers); mutex_unlock(&tty_mutex); - return 0; } - EXPORT_SYMBOL(tty_unregister_driver); dev_t tty_devnum(struct tty_struct *tty) diff --git a/include/linux/tty.h b/include/linux/tty.h index 95fc2f100f12..51f56e5ec955 100644 --- a/include/linux/tty.h +++ b/include/linux/tty.h @@ -482,7 +482,7 @@ extern void stop_tty(struct tty_struct *tty); extern void __start_tty(struct tty_struct *tty); extern void start_tty(struct tty_struct *tty); extern int tty_register_driver(struct tty_driver *driver); -extern int tty_unregister_driver(struct tty_driver *driver); +extern void tty_unregister_driver(struct tty_driver *driver); extern struct device *tty_register_device(struct tty_driver *driver, unsigned index, struct device *dev); extern struct device *tty_register_device_attr(struct tty_driver *driver, |