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Subject[PATCH] TTY: export NR_LDISC and N_* line discipline numbers to user-space
Date
From: Florian Fainelli <ffainelli@freebox.fr>

Since commit (4564f9e5: consolidate line discipline number definitions)
the patch moved all line discipline number from a per-architecture termios.h
to a shared one: tty.h. However, prior to this consolidation work, the
line discipline numbers were outside of an ifdef __KERNEL__/endif block
so these numbers used to be exported to user-space.

Since such numbers are kernel ABI anyway, and tty.h is already included
for user- space header processing, just move these relevant defines
outside of the ifdef __KERNEL__/endif block in include/linux/tty.h.

CC: Maxime Bizon <mbizon@freebox.fr>
Signed-off-by: Florian Fainelli <ffainelli@freebox.fr>
---
diff --git a/include/linux/tty.h b/include/linux/tty.h
index 9f469c7..272dc9a 100644
--- a/include/linux/tty.h
+++ b/include/linux/tty.h
@@ -5,24 +5,6 @@
* 'tty.h' defines some structures used by tty_io.c and some defines.
*/

-#ifdef __KERNEL__
-#include <linux/fs.h>
-#include <linux/major.h>
-#include <linux/termios.h>
-#include <linux/workqueue.h>
-#include <linux/tty_driver.h>
-#include <linux/tty_ldisc.h>
-#include <linux/mutex.h>
-
-#include <asm/system.h>
-
-
-/*
- * (Note: the *_driver.minor_start values 1, 64, 128, 192 are
- * hardcoded at present.)
- */
-#define NR_UNIX98_PTY_DEFAULT 4096 /* Default maximum for Unix98 ptys */
-#define NR_UNIX98_PTY_MAX (1 << MINORBITS) /* Absolute limit */
#define NR_LDISCS 30

/* line disciplines */
@@ -51,6 +33,25 @@
#define N_GSM0710 21 /* GSM 0710 Mux */
#define N_TI_WL 22 /* for TI's WL BT, FM, GPS combo chips */

+#ifdef __KERNEL__
+#include <linux/fs.h>
+#include <linux/major.h>
+#include <linux/termios.h>
+#include <linux/workqueue.h>
+#include <linux/tty_driver.h>
+#include <linux/tty_ldisc.h>
+#include <linux/mutex.h>
+
+#include <asm/system.h>
+
+
+/*
+ * (Note: the *_driver.minor_start values 1, 64, 128, 192 are
+ * hardcoded at present.)
+ */
+#define NR_UNIX98_PTY_DEFAULT 4096 /* Default maximum for Unix98 ptys */
+#define NR_UNIX98_PTY_MAX (1 << MINORBITS) /* Absolute limit */
+
/*
* This character is the same as _POSIX_VDISABLE: it cannot be used as
* a c_cc[] character, but indicates that a particular special character
--
1.7.4.1


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