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 /include/linux/tty_driver.h | |
| parent | TTY: move allocations to tty_alloc_driver (diff) | |
| download | linux-dev-0019b4089ccef8148d8be83cc8adfc81a75b47d4.tar.xz linux-dev-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 'include/linux/tty_driver.h')
| -rw-r--r-- | include/linux/tty_driver.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/tty_driver.h b/include/linux/tty_driver.h index 1a85f003d646..44e05b75d573 100644 --- a/include/linux/tty_driver.h +++ b/include/linux/tty_driver.h @@ -394,6 +394,11 @@ static inline struct tty_driver *tty_driver_kref_get(struct tty_driver *d) * TTY_DRIVER_DYNAMIC_ALLOC -- do not allocate structures which are * needed per line for this driver as it would waste memory. * The driver will take care. + * + * TTY_DRIVER_UNNUMBERED_NODE -- do not create numbered /dev nodes. In + * other words create /dev/ttyprintk and not /dev/ttyprintk0. + * Applicable only when a driver for a single tty device is + * being allocated. */ #define TTY_DRIVER_INSTALLED 0x0001 #define TTY_DRIVER_RESET_TERMIOS 0x0002 @@ -402,6 +407,7 @@ static inline struct tty_driver *tty_driver_kref_get(struct tty_driver *d) #define TTY_DRIVER_DEVPTS_MEM 0x0010 #define TTY_DRIVER_HARDWARE_BREAK 0x0020 #define TTY_DRIVER_DYNAMIC_ALLOC 0x0040 +#define TTY_DRIVER_UNNUMBERED_NODE 0x0080 /* tty driver types */ #define TTY_DRIVER_TYPE_SYSTEM 0x0001 |