From c2bb524b2e1a6eddae65139601bee24cb60856a0 Mon Sep 17 00:00:00 2001
From: Peter Hurley <peter@hurleysoftware.com>
Date: Sat, 9 Jan 2016 21:13:51 -0800
Subject: [PATCH] tty: Remove __lockfunc annotation from tty lock functions

The tty lock/unlock code does not belong in the special lockfunc section
which is treated specially by stack backtraces.

Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/tty/tty_ldisc.c | 16 +++++++---------
 drivers/tty/tty_mutex.c |  8 ++++----
 include/linux/tty.h     |  8 ++++----
 3 files changed, 15 insertions(+), 17 deletions(-)

diff --git a/drivers/tty/tty_ldisc.c b/drivers/tty/tty_ldisc.c
index 49f0cea1e538..713cc2d48846 100644
--- a/drivers/tty/tty_ldisc.c
+++ b/drivers/tty/tty_ldisc.c
@@ -304,13 +304,13 @@ void tty_ldisc_deref(struct tty_ldisc *ld)
 EXPORT_SYMBOL_GPL(tty_ldisc_deref);
 
 
-static inline int __lockfunc
+static inline int
 __tty_ldisc_lock(struct tty_struct *tty, unsigned long timeout)
 {
 	return ldsem_down_write(&tty->ldisc_sem, timeout);
 }
 
-static inline int __lockfunc
+static inline int
 __tty_ldisc_lock_nested(struct tty_struct *tty, unsigned long timeout)
 {
 	return ldsem_down_write_nested(&tty->ldisc_sem,
@@ -322,8 +322,7 @@ static inline void __tty_ldisc_unlock(struct tty_struct *tty)
 	ldsem_up_write(&tty->ldisc_sem);
 }
 
-static int __lockfunc
-tty_ldisc_lock(struct tty_struct *tty, unsigned long timeout)
+static int tty_ldisc_lock(struct tty_struct *tty, unsigned long timeout)
 {
 	int ret;
 
@@ -340,7 +339,7 @@ static void tty_ldisc_unlock(struct tty_struct *tty)
 	__tty_ldisc_unlock(tty);
 }
 
-static int __lockfunc
+static int
 tty_ldisc_lock_pair_timeout(struct tty_struct *tty, struct tty_struct *tty2,
 			    unsigned long timeout)
 {
@@ -376,14 +375,13 @@ tty_ldisc_lock_pair_timeout(struct tty_struct *tty, struct tty_struct *tty2,
 	return 0;
 }
 
-static void __lockfunc
-tty_ldisc_lock_pair(struct tty_struct *tty, struct tty_struct *tty2)
+static void tty_ldisc_lock_pair(struct tty_struct *tty, struct tty_struct *tty2)
 {
 	tty_ldisc_lock_pair_timeout(tty, tty2, MAX_SCHEDULE_TIMEOUT);
 }
 
-static void __lockfunc tty_ldisc_unlock_pair(struct tty_struct *tty,
-					     struct tty_struct *tty2)
+static void tty_ldisc_unlock_pair(struct tty_struct *tty,
+				  struct tty_struct *tty2)
 {
 	__tty_ldisc_unlock(tty);
 	if (tty2)
diff --git a/drivers/tty/tty_mutex.c b/drivers/tty/tty_mutex.c
index d2f3c4cd697f..75351e4b77df 100644
--- a/drivers/tty/tty_mutex.c
+++ b/drivers/tty/tty_mutex.c
@@ -10,7 +10,7 @@
  * Getting the big tty mutex.
  */
 
-void __lockfunc tty_lock(struct tty_struct *tty)
+void tty_lock(struct tty_struct *tty)
 {
 	if (WARN(tty->magic != TTY_MAGIC, "L Bad %p\n", tty))
 		return;
@@ -27,7 +27,7 @@ int tty_lock_interruptible(struct tty_struct *tty)
 	return mutex_lock_interruptible(&tty->legacy_mutex);
 }
 
-void __lockfunc tty_unlock(struct tty_struct *tty)
+void tty_unlock(struct tty_struct *tty)
 {
 	if (WARN(tty->magic != TTY_MAGIC, "U Bad %p\n", tty))
 		return;
@@ -36,13 +36,13 @@ void __lockfunc tty_unlock(struct tty_struct *tty)
 }
 EXPORT_SYMBOL(tty_unlock);
 
-void __lockfunc tty_lock_slave(struct tty_struct *tty)
+void tty_lock_slave(struct tty_struct *tty)
 {
 	if (tty && tty != tty->link)
 		tty_lock(tty);
 }
 
-void __lockfunc tty_unlock_slave(struct tty_struct *tty)
+void tty_unlock_slave(struct tty_struct *tty)
 {
 	if (tty && tty != tty->link)
 		tty_unlock(tty);
diff --git a/include/linux/tty.h b/include/linux/tty.h
index 57c4e03ec2aa..83f127673bc9 100644
--- a/include/linux/tty.h
+++ b/include/linux/tty.h
@@ -643,11 +643,11 @@ extern long vt_compat_ioctl(struct tty_struct *tty,
 
 /* tty_mutex.c */
 /* functions for preparation of BKL removal */
-extern void __lockfunc tty_lock(struct tty_struct *tty);
+extern void tty_lock(struct tty_struct *tty);
 extern int  tty_lock_interruptible(struct tty_struct *tty);
-extern void __lockfunc tty_unlock(struct tty_struct *tty);
-extern void __lockfunc tty_lock_slave(struct tty_struct *tty);
-extern void __lockfunc tty_unlock_slave(struct tty_struct *tty);
+extern void tty_unlock(struct tty_struct *tty);
+extern void tty_lock_slave(struct tty_struct *tty);
+extern void tty_unlock_slave(struct tty_struct *tty);
 extern void tty_set_lock_subclass(struct tty_struct *tty);
 
 #ifdef CONFIG_PROC_FS
-- 
2.20.1