diff options
Diffstat (limited to 'drivers/tty/vt/vt.c')
| -rw-r--r-- | drivers/tty/vt/vt.c | 125 |
1 files changed, 20 insertions, 105 deletions
diff --git a/drivers/tty/vt/vt.c b/drivers/tty/vt/vt.c index 740202d8a5c4..9a8e8c5a0c73 100644 --- a/drivers/tty/vt/vt.c +++ b/drivers/tty/vt/vt.c @@ -828,7 +828,7 @@ static inline int resize_screen(struct vc_data *vc, int width, int height, * If the caller passes a tty structure then update the termios winsize * information and perform any necessary signal handling. * - * Caller must hold the console semaphore. Takes the termios mutex and + * Caller must hold the console semaphore. Takes the termios rwsem and * ctrl_lock of the tty IFF a tty is passed. */ @@ -972,7 +972,7 @@ int vc_resize(struct vc_data *vc, unsigned int cols, unsigned int rows) * the actual work. * * Takes the console sem and the called methods then take the tty - * termios_mutex and the tty ctrl_lock in that order. + * termios_rwsem and the tty ctrl_lock in that order. */ static int vt_resize(struct tty_struct *tty, struct winsize *ws) { @@ -2809,8 +2809,10 @@ static void con_shutdown(struct tty_struct *tty) console_unlock(); } +static int default_color = 7; /* white */ static int default_italic_color = 2; // green (ASCII) static int default_underline_color = 3; // cyan (ASCII) +module_param_named(color, default_color, int, S_IRUGO | S_IWUSR); module_param_named(italic, default_italic_color, int, S_IRUGO | S_IWUSR); module_param_named(underline, default_underline_color, int, S_IRUGO | S_IWUSR); @@ -2832,7 +2834,7 @@ static void vc_init(struct vc_data *vc, unsigned int rows, vc->vc_palette[k++] = default_grn[j] ; vc->vc_palette[k++] = default_blu[j] ; } - vc->vc_def_color = 0x07; /* white */ + vc->vc_def_color = default_color; vc->vc_ulcolor = default_underline_color; vc->vc_itcolor = default_italic_color; vc->vc_halfcolor = 0x08; /* grey */ @@ -3086,17 +3088,6 @@ 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 +3105,6 @@ 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 +3225,11 @@ 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 +3267,11 @@ 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 +3543,9 @@ 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 +3555,6 @@ 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 +3592,7 @@ 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 +3613,6 @@ 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 +3620,9 @@ 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 +4178,5 @@ 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 |