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tty: Remove tty_pair_get_tty()/tty_pair_get_pty() api 

tty_pair_get_pty() has no in-tree users and tty_pair_get_tty()
has only one file-local user. Remove the external declarations,
the export declarations, and declare tty_pair_get_tty() static.

Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Reviewed-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Peter Hurley 2014-10-16 14:59:41 -04:00 committed by Greg Kroah-Hartman
parent edf4edacb3
commit 8f166e0019
2 changed files with 5 additions and 14 deletions
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16
drivers/tty/tty_io.c
View File

@ -2703,23 +2703,17 @@ static int tty_tiocgicount(struct tty_struct *tty, void __user *arg)
return 0;
}
struct tty_struct *tty_pair_get_tty(struct tty_struct *tty)
/*
* if pty, return the slave side (real_tty)
* otherwise, return self
*/
static struct tty_struct *tty_pair_get_tty(struct tty_struct *tty)
{
if (tty->driver->type == TTY_DRIVER_TYPE_PTY &&
tty->driver->subtype == PTY_TYPE_MASTER)
tty = tty->link;
return tty;
}
EXPORT_SYMBOL(tty_pair_get_tty);
struct tty_struct *tty_pair_get_pty(struct tty_struct *tty)
{
if (tty->driver->type == TTY_DRIVER_TYPE_PTY &&
tty->driver->subtype == PTY_TYPE_MASTER)
return tty;
return tty->link;
}
EXPORT_SYMBOL(tty_pair_get_pty);
/*
* Split this up, as gcc can choke on it otherwise..

3
include/linux/tty.h
View File

@ -498,9 +498,6 @@ extern int tty_init_termios(struct tty_struct *tty);
extern int tty_standard_install(struct tty_driver *driver,
struct tty_struct *tty);
extern struct tty_struct *tty_pair_get_tty(struct tty_struct *tty);
extern struct tty_struct *tty_pair_get_pty(struct tty_struct *tty);
extern struct mutex tty_mutex;
extern spinlock_t tty_files_lock;