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| author | Jiri Slaby <jslaby@suse.cz> | 2021-03-02 07:22:05 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-03-10 09:34:09 +0100 |
| commit | a872ab4d6d191cca1ce84b945e394bd6a8d84dd9 (patch) | |
| tree | bf12a1be5a8d5fdca8ae92d92543991d6b748ded /drivers/tty/tty_io.c | |
| parent | 6c2e6317c975c3cef1e08482a6ed8b734831ffbe (diff) | |
| download | linux-a872ab4d6d191cca1ce84b945e394bd6a8d84dd9.tar.gz linux-a872ab4d6d191cca1ce84b945e394bd6a8d84dd9.tar.bz2 linux-a872ab4d6d191cca1ce84b945e394bd6a8d84dd9.zip | |
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 <jslaby@suse.cz>
Link: https://lore.kernel.org/r/20210302062214.29627-35-jslaby@suse.cz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/tty_io.c')
| -rw-r--r-- | drivers/tty/tty_io.c | 9 |
1 files changed, 1 insertions, 8 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) |