From 109d89ca0ee76138e04b41726b7f719c7df65e88 Mon Sep 17 00:00:00 2001 From: Russell King Date: Sat, 16 Jul 2005 16:43:33 +0100 Subject: [PATCH] [PATCH] ARM: Allow register_undef_hook to be called with IRQs off Preserve the interrupt status across a call to register_undef_hook. This allows it to be called while interrupts are disabled. Signed-off-by: Russell King --- arch/arm/kernel/traps.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c index df2cb06ce42..d571c37ac30 100644 --- a/arch/arm/kernel/traps.c +++ b/arch/arm/kernel/traps.c @@ -248,16 +248,20 @@ static DEFINE_SPINLOCK(undef_lock); void register_undef_hook(struct undef_hook *hook) { - spin_lock_irq(&undef_lock); + unsigned long flags; + + spin_lock_irqsave(&undef_lock, flags); list_add(&hook->node, &undef_hook); - spin_unlock_irq(&undef_lock); + spin_unlock_irqrestore(&undef_lock, flags); } void unregister_undef_hook(struct undef_hook *hook) { - spin_lock_irq(&undef_lock); + unsigned long flags; + + spin_lock_irqsave(&undef_lock, flags); list_del(&hook->node); - spin_unlock_irq(&undef_lock); + spin_unlock_irqrestore(&undef_lock, flags); } asmlinkage void do_undefinstr(struct pt_regs *regs) -- 2.41.0