diff --git a/drivers/tty/Kconfig b/drivers/tty/Kconfig index 0840d27381ea..73aba9a31064 100644 --- a/drivers/tty/Kconfig +++ b/drivers/tty/Kconfig @@ -75,6 +75,19 @@ config VT_CONSOLE_SLEEP def_bool y depends on VT_CONSOLE && PM_SLEEP +config NR_TTY_DEVICES + int "Maximum tty device number" + depends on VT + range 12 63 + default 63 + help + This option is used to change the number of tty devices in /dev. + The default value is 63. The lowest number you can set is 12, + 63 is also the upper limit so we don't overrun the serial + consoles. + + If unsure, say 63. + config HW_CONSOLE bool depends on VT && !UML diff --git a/include/uapi/linux/vt.h b/include/uapi/linux/vt.h index e9d39c48520a..3bceead8da40 100644 --- a/include/uapi/linux/vt.h +++ b/include/uapi/linux/vt.h @@ -3,12 +3,25 @@ #define _UAPI_LINUX_VT_H +/* + * We will make this definition solely for the purpose of making packages + * such as splashutils build, because they can not understand that + * NR_TTY_DEVICES is defined in the kernel configuration. + */ +#ifndef CONFIG_NR_TTY_DEVICES +#define CONFIG_NR_TTY_DEVICES 63 +#endif + /* * These constants are also useful for user-level apps (e.g., VC * resizing). */ #define MIN_NR_CONSOLES 1 /* must be at least 1 */ -#define MAX_NR_CONSOLES 63 /* serial lines start at 64 */ +/* + * NR_TTY_DEVICES: + * Value MUST be at least 12 and must never be higher then 63 + */ +#define MAX_NR_CONSOLES CONFIG_NR_TTY_DEVICES /* serial lines start above this */ /* Note: the ioctl VT_GETSTATE does not work for consoles 16 and higher (since it returns a short) */