[PATCH 3/9] vt: delete unneeded functions register_con_driver|take_over_console

Wang YanQing
2013-05-08T18:14:12Z

Now there is no place use register_con_driver|take_over_console,
and we can achieve their function with do_register_con_driver|
do_take_over_console easily, so just delete them to reduce code duplication.

Signed-off-by: Wang YanQing <udknight@gmail.com>
---
drivers/tty/vt/vt.c | 45 ---------------------------------------------
include/linux/console.h | 2 --
2 files changed, 47 deletions(-)

diff --git a/drivers/tty/vt/vt.c b/drivers/tty/vt/vt.c
index fbd447b..852d470 100644
--- a/drivers/tty/vt/vt.c
+++ b/drivers/tty/vt/vt.c
@@ -3576,26 +3576,6 @@ err:
return retval;
}

-/**
- * register_con_driver - register console driver to console layer
- * @csw: console driver
- * @first: the first console to take over, minimum value is 0
- * @last: the last console to take over, maximum value is MAX_NR_CONSOLES -1
- *
- * DESCRIPTION: This function registers a console driver which can later
- * bind to a range of consoles specified by @first and @last. It will
- * also initialize the console driver by calling con_startup().
- */
-int register_con_driver(const struct consw *csw, int first, int last)
-{
- int retval;
-
- console_lock();
- retval = do_register_con_driver(csw, first, last);
- console_unlock();
- return retval;
-}
-EXPORT_SYMBOL(register_con_driver);

/**
* unregister_con_driver - unregister console driver from console layer
@@ -3677,30 +3657,6 @@ int do_take_over_console(const struct consw *csw, int first, int last, int deflt
}
EXPORT_SYMBOL_GPL(do_take_over_console);

-/*
- * If we support more console drivers, this function is used
- * when a driver wants to take over some existing consoles
- * and become default driver for newly opened ones.
- *
- * take_over_console is basically a register followed by unbind
- */
-int take_over_console(const struct consw *csw, int first, int last, int deflt)
-{
- int err;
-
- err = register_con_driver(csw, first, last);
- /*
- * If we get an busy error we still want to bind the console driver
- * and return success, as we may have unbound the console driver
- * but not unregistered it.
- */
- if (err == -EBUSY)
- err = 0;
- if (!err)
- bind_con_driver(csw, first, last, deflt);
-
- return err;
-}

/*
* give_up_console is a wrapper to unregister_con_driver. It will only
@@ -4264,6 +4220,5 @@ EXPORT_SYMBOL(console_blanked);
EXPORT_SYMBOL(vc_cons);
EXPORT_SYMBOL(global_cursor_default);
#ifndef VT_SINGLE_DRIVER
-EXPORT_SYMBOL(take_over_console);
EXPORT_SYMBOL(give_up_console);
#endif
diff --git a/include/linux/console.h b/include/linux/console.h
index 29680a8..c2b2d45 100644
--- a/include/linux/console.h
+++ b/include/linux/console.h
@@ -75,10 +75,8 @@ extern const struct consw newport_con; /* SGI Newport console */
extern const struct consw prom_con; /* SPARC PROM console */

int con_is_bound(const struct consw *csw);
-int register_con_driver(const struct consw *csw, int first, int last);
int unregister_con_driver(const struct consw *csw);
int do_unregister_con_driver(const struct consw *csw);
-int take_over_console(const struct consw *sw, int first, int last, int deflt);
int do_take_over_console(const struct consw *sw, int first, int last, int deflt);
void give_up_console(const struct consw *sw);
#ifdef CONFIG_HW_CONSOLE
--
1.7.12.4.dirty