From 9a9d61b4f54baabed86936e36c1c90f72387057c Mon Sep 17 00:00:00 2001
From: Wu Zhangjin <wuzhangjin@gmail.com>
Date: Mon, 22 Feb 2010 00:47:45 +0800
Subject: [PATCH] RT: MIPS: Make the die_lock be raw

commit f892b149b98479d18f78275a7cd36aaa8fb91c72 in tip.

Kernel is going to die, the lock must be raw to ensure nobody can
preempt it at this urgent time.

Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>

diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c
index d612c6d..35ff8d6 100644
--- a/arch/mips/kernel/traps.c
+++ b/arch/mips/kernel/traps.c
@@ -350,7 +350,7 @@ void show_registers(const struct pt_regs *regs)
 	printk("\n");
 }
 
-static DEFINE_SPINLOCK(die_lock);
+static DEFINE_RAW_SPINLOCK(die_lock);
 
 void __noreturn die(const char * str, struct pt_regs * regs)
 {
@@ -361,7 +361,7 @@ void __noreturn die(const char * str, struct pt_regs * regs)
 #endif /* CONFIG_MIPS_MT_SMTC */
 
 	console_verbose();
-	spin_lock_irq(&die_lock);
+	raw_spin_lock_irq(&die_lock);
 	bust_spinlocks(1);
 #ifdef CONFIG_MIPS_MT_SMTC
 	mips_mt_regdump(dvpret);
@@ -373,7 +373,7 @@ void __noreturn die(const char * str, struct pt_regs * regs)
 	printk("%s[#%d]:\n", str, ++die_counter);
 	show_registers(regs);
 	add_taint(TAINT_DIE);
-	spin_unlock_irq(&die_lock);
+	raw_spin_unlock_irq(&die_lock);
 
 	if (in_interrupt())
 		panic("Fatal exception in interrupt");
-- 
1.7.1.1