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