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| author | Russell King <rmk@dyn-67.arm.linux.org.uk> | 2005-07-16 16:43:33 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2005-07-16 16:43:33 +0100 |
| commit | 109d89ca0ee76138e04b41726b7f719c7df65e88 (patch) | |
| tree | 3653f48740d7812e21e15d09648e58edbc0416b9 | |
| parent | 54ea06f6afe85aaf419e51343d4e4b5599197113 (diff) | |
| download | linux-3.10-109d89ca0ee76138e04b41726b7f719c7df65e88.tar.gz linux-3.10-109d89ca0ee76138e04b41726b7f719c7df65e88.tar.bz2 linux-3.10-109d89ca0ee76138e04b41726b7f719c7df65e88.zip | |
[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 <rmk+kernel@arm.linux.org.uk>
| -rw-r--r-- | arch/arm/kernel/traps.c | 12 |
1 files 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) |