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| author |   Jiri Slaby <jslaby@suse.cz> | 2012-08-08 22:26:41 +0200 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-08-13 16:45:38 -0700 |
| commit | 21aca2fa00259f781d228496631b61dbb4274e90 (patch) | |
| tree | 825e2b2ce47f55c27948112e89238c2a2a831f48 /include/linux/tty_driver.h | |
| parent | TTY: pass flags to alloc_tty_driver (diff) | |
| download | linux-dev-21aca2fa00259f781d228496631b61dbb4274e90.tar.xz linux-dev-21aca2fa00259f781d228496631b61dbb4274e90.zip | |
TTY: pty, switch to tty_alloc_driver
Switch to the new driver allocation interface, as this is one of the
special call-sites. Here, we need TTY_DRIVER_DYNAMIC_ALLOC to not
allocate tty_driver->ports, cdevs and potentially other structures
because we reserve too many lines in pty. Instead, it provides the
tty_port<->tty_struct link in tty->ops->install already.
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 | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/tty_driver.h b/include/linux/tty_driver.h index 3adc362f0bd2..1a85f003d646 100644 --- a/include/linux/tty_driver.h +++ b/include/linux/tty_driver.h @@ -391,6 +391,9 @@ static inline struct tty_driver *tty_driver_kref_get(struct tty_driver *d) * the requested timeout to the caller instead of using a simple * on/off interface. * + * 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. */ #define TTY_DRIVER_INSTALLED 0x0001 #define TTY_DRIVER_RESET_TERMIOS 0x0002 @@ -398,6 +401,7 @@ static inline struct tty_driver *tty_driver_kref_get(struct tty_driver *d) #define TTY_DRIVER_DYNAMIC_DEV 0x0008 #define TTY_DRIVER_DEVPTS_MEM 0x0010 #define TTY_DRIVER_HARDWARE_BREAK 0x0020 +#define TTY_DRIVER_DYNAMIC_ALLOC 0x0040 /* tty driver types */ #define TTY_DRIVER_TYPE_SYSTEM 0x0001 |