[PATCH] VT binding: Make VT binding a Kconfig option (13ae6645) · Commits · 戴 / test

drivers/char/Kconfig

+17 −0

Original line number	Diff line number	Diff line
		@@ -62,6 +62,23 @@ config HW_CONSOLE
		depends on VT && !S390 && !UML
		default y

		config VT_HW_CONSOLE_BINDING
		bool "Support for binding and unbinding console drivers"
		depends on HW_CONSOLE
		default n
		---help---
		The virtual terminal is the device that interacts with the physical
		terminal through console drivers. On these systems, at least one
		console driver is loaded. In other configurations, additional console
		drivers may be enabled, such as the framebuffer console. If more than
		1 console driver is enabled, setting this to 'y' will allow you to
		select the console driver that will serve as the backend for the
		virtual terminals.

		See <file:Documentation/console/console.txt> for more
		information. For framebuffer console users, please refer to
		<file:Documentation/fb/fbcon.txt>.

		config SERIAL_NONSTANDARD
		bool "Non-standard serial port support"
		---help---

+27 −16

Original line number	Diff line number	Diff line
		@@ -2691,22 +2691,6 @@ int __init vty_init(void)

		static struct class *vtconsole_class;

		static int con_is_graphics(const struct consw *csw, int first, int last)
		{
		int i, retval = 0;

		for (i = first; i <= last; i++) {
		struct vc_data *vc = vc_cons[i].d;

		if (vc && vc->vc_mode == KD_GRAPHICS) {
		retval = 1;
		break;
		}
		}

		return retval;
		}

		static int bind_con_driver(const struct consw *csw, int first, int last,
		int deflt)
		{
		@@ -2808,6 +2792,23 @@ err:
		return retval;
		};

		#ifdef CONFIG_VT_HW_CONSOLE_BINDING
		static int con_is_graphics(const struct consw *csw, int first, int last)
		{
		int i, retval = 0;

		for (i = first; i <= last; i++) {
		struct vc_data *vc = vc_cons[i].d;

		if (vc && vc->vc_mode == KD_GRAPHICS) {
		retval = 1;
		break;
		}
		}

		return retval;
		}

		static int unbind_con_driver(const struct consw *csw, int first, int last,
		int deflt)
		{
		@@ -2984,6 +2985,16 @@ static int vt_unbind(struct con_driver *con)
		err:
		return 0;
		}
		#else
		static inline int vt_bind(struct con_driver *con)
		{
		return 0;
		}
		static inline int vt_unbind(struct con_driver *con)
		{
		return 0;
		}
		#endif /* CONFIG_VT_HW_CONSOLE_BINDING */

		static ssize_t store_bind(struct class_device *class_device,
		const char *buf, size_t count)