summaryrefslogtreecommitdiff
path: root/drivers/tty/vt/vt.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/tty/vt/vt.c')
-rw-r--r--drivers/tty/vt/vt.c117
1 files changed, 15 insertions, 102 deletions
diff --git a/drivers/tty/vt/vt.c b/drivers/tty/vt/vt.c
index 740202d..c677829 100644
--- a/drivers/tty/vt/vt.c
+++ b/drivers/tty/vt/vt.c
@@ -3086,17 +3086,6 @@ err:
};
-static int bind_con_driver(const struct consw *csw, int first, int last,
- int deflt)
-{
- int ret;
-
- console_lock();
- ret = do_bind_con_driver(csw, first, last, deflt);
- console_unlock();
- return ret;
-}
-
#ifdef CONFIG_VT_HW_CONSOLE_BINDING
static int con_is_graphics(const struct consw *csw, int first, int last)
{
@@ -3114,34 +3103,6 @@ static int con_is_graphics(const struct consw *csw, int first, int last)
return retval;
}
-/**
- * unbind_con_driver - unbind a console driver
- * @csw: pointer to console driver to unregister
- * @first: first in range of consoles that @csw should be unbound from
- * @last: last in range of consoles that @csw should be unbound from
- * @deflt: should next bound console driver be default after @csw is unbound?
- *
- * To unbind a driver from all possible consoles, pass 0 as @first and
- * %MAX_NR_CONSOLES as @last.
- *
- * @deflt controls whether the console that ends up replacing @csw should be
- * the default console.
- *
- * RETURNS:
- * -ENODEV if @csw isn't a registered console driver or can't be unregistered
- * or 0 on success.
- */
-int unbind_con_driver(const struct consw *csw, int first, int last, int deflt)
-{
- int retval;
-
- console_lock();
- retval = do_unbind_con_driver(csw, first, last, deflt);
- console_unlock();
- return retval;
-}
-EXPORT_SYMBOL(unbind_con_driver);
-
/* unlocked version of unbind_con_driver() */
int do_unbind_con_driver(const struct consw *csw, int first, int last, int deflt)
{
@@ -3262,8 +3223,11 @@ static int vt_bind(struct con_driver *con)
if (first == 0 && last == MAX_NR_CONSOLES -1)
deflt = 1;
- if (first != -1)
- bind_con_driver(csw, first, last, deflt);
+ if (first != -1) {
+ console_lock();
+ do_bind_con_driver(csw, first, last, deflt);
+ console_unlock();
+ }
first = -1;
last = -1;
@@ -3301,8 +3265,11 @@ static int vt_unbind(struct con_driver *con)
if (first == 0 && last == MAX_NR_CONSOLES -1)
deflt = 1;
- if (first != -1)
- unbind_con_driver(csw, first, last, deflt);
+ if (first != -1) {
+ console_lock();
+ do_unbind_con_driver(csw, first, last, deflt);
+ console_unlock();
+ }
first = -1;
last = -1;
@@ -3574,29 +3541,9 @@ 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
+ * do_unregister_con_driver - unregister console driver from console layer
* @csw: console driver
*
* DESCRIPTION: All drivers that registers to the console layer must
@@ -3606,17 +3553,6 @@ EXPORT_SYMBOL(register_con_driver);
*
* The driver must unbind first prior to unregistration.
*/
-int unregister_con_driver(const struct consw *csw)
-{
- int retval;
-
- console_lock();
- retval = do_unregister_con_driver(csw);
- console_unlock();
- return retval;
-}
-EXPORT_SYMBOL(unregister_con_driver);
-
int do_unregister_con_driver(const struct consw *csw)
{
int i, retval = -ENODEV;
@@ -3654,7 +3590,7 @@ EXPORT_SYMBOL_GPL(do_unregister_con_driver);
* 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
+ * do_take_over_console is basically a register followed by unbind
*/
int do_take_over_console(const struct consw *csw, int first, int last, int deflt)
{
@@ -3675,30 +3611,6 @@ 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
@@ -3706,7 +3618,9 @@ int take_over_console(const struct consw *csw, int first, int last, int deflt)
*/
void give_up_console(const struct consw *csw)
{
- unregister_con_driver(csw);
+ console_lock();
+ do_unregister_con_driver(csw);
+ console_unlock();
}
static int __init vtconsole_class_init(void)
@@ -4262,6 +4176,5 @@ 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