From e29e175b0f40cffc86068156733def14a7a533ab Mon Sep 17 00:00:00 2001
From: Zilvinas Valinskas <zilvinas@wilibox.com>
Date: Fri, 16 Mar 2007 13:38:34 -0800
Subject: [PATCH] [PATCH] initialise pi_lock if CONFIG_RT_MUTEXES=N
Fixes a bogus lockdep warning which causes lockdep to disable itself.
Acked-by: Ingo Molnar <mingo@elte.hu>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
kernel/fork.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/fork.c b/kernel/fork.c
index d154cc786489..6af959c034d8 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -933,8 +933,8 @@ asmlinkage long sys_set_tid_address(int __user *tidptr)
static inline void rt_mutex_init_task(struct task_struct *p)
{
-#ifdef CONFIG_RT_MUTEXES
spin_lock_init(&p->pi_lock);
+#ifdef CONFIG_RT_MUTEXES
plist_head_init(&p->pi_waiters, &p->pi_lock);
p->pi_blocked_on = NULL;
#endif
--
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