diff options
| author |   Jiri Slaby <jslaby@suse.cz> | 2012-08-08 22:26:43 +0200 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-08-13 16:45:38 -0700 |
| commit | 0019b4089ccef8148d8be83cc8adfc81a75b47d4 (patch) | |
| tree | 4db275fb4c29f9e7f2da85f136dc9f733b26d3eb /drivers/char/ttyprintk.c | |
| parent | TTY: move allocations to tty_alloc_driver (diff) | |
| download | wireguard-linux-0019b4089ccef8148d8be83cc8adfc81a75b47d4.tar.xz wireguard-linux-0019b4089ccef8148d8be83cc8adfc81a75b47d4.zip | |
TTY: add support for unnumbered device nodes
This allows drivers like ttyprintk to avoid hacks to create an
unnumbered node in /dev. It used to set TTY_DRIVER_DYNAMIC_DEV in
flags and call device_create on its own. That is incorrect, because
TTY_DRIVER_DYNAMIC_DEV may be set only if tty_register_device is
called explicitly.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/char/ttyprintk.c')
| -rw-r--r-- | drivers/char/ttyprintk.c | 17 |
1 files changed, 4 insertions, 13 deletions
diff --git a/drivers/char/ttyprintk.c b/drivers/char/ttyprintk.c index be1c3fb186c1..9e6272f0b98c 100644 --- a/drivers/char/ttyprintk.c +++ b/drivers/char/ttyprintk.c @@ -178,13 +178,15 @@ static struct tty_driver *ttyprintk_driver; static int __init ttyprintk_init(void) { int ret = -ENOMEM; - void *rp; tty_port_init(&tpk_port.port); tpk_port.port.ops = &null_ops; mutex_init(&tpk_port.port_write_mutex); - ttyprintk_driver = alloc_tty_driver(1); + ttyprintk_driver = tty_alloc_driver(1, + TTY_DRIVER_RESET_TERMIOS | + TTY_DRIVER_REAL_RAW | + TTY_DRIVER_UNNUMBERED_NODE); if (!ttyprintk_driver) return ret; @@ -195,8 +197,6 @@ static int __init ttyprintk_init(void) ttyprintk_driver->type = TTY_DRIVER_TYPE_CONSOLE; ttyprintk_driver->init_termios = tty_std_termios; ttyprintk_driver->init_termios.c_oflag = OPOST | OCRNL | ONOCR | ONLRET; - ttyprintk_driver->flags = TTY_DRIVER_RESET_TERMIOS | - TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; tty_set_operations(ttyprintk_driver, &ttyprintk_ops); ret = tty_register_driver(ttyprintk_driver); @@ -205,15 +205,6 @@ static int __init ttyprintk_init(void) goto error; } - /* create our unnumbered device */ - rp = device_create(tty_class, NULL, MKDEV(TTYAUX_MAJOR, 3), NULL, - ttyprintk_driver->name); - if (IS_ERR(rp)) { - printk(KERN_ERR "Couldn't create ttyprintk device\n"); - ret = PTR_ERR(rp); - goto error; - } - return 0; error: |