From 2412aa1293a4159c610616305c17efd237c8208d Mon Sep 17 00:00:00 2001 From: "Luck, Tony" Date: Tue, 16 Apr 2013 11:35:56 -0700 Subject: [PATCH] ia64: Make sure interrupts enabled when we "safe_halt()" In commit d166991234347215dc23fc9dc15a63a83a1a54e1 idle: Implement generic idle function Thomas Gleixner cleaned up many things but perturbed some fragile code that was keeping ia64 alive. So we started seeing: WARNING: at kernel/cpu/idle.c:94 cpu_idle_loop+0x360/0x380() and other unpleasantness like system hangs during boot. We really shouldn't ever halt with interrupts disabled. Signed-off-by: Tony Luck Cc: Linus Torvalds Cc: Rusty Russell Cc: Peter Zijlstra Cc: Srivatsa S. Bhat Cc: Paul McKenney Cc: magnus.damm@gmail.com Link: http://lkml.kernel.org/r/516d9a0c26048eae9c@agluck-desk.sc.intel.com Signed-off-by: Thomas Gleixner --- arch/ia64/include/asm/irqflags.h | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/ia64/include/asm/irqflags.h b/arch/ia64/include/asm/irqflags.h index 2b68d856dc78..1bf2cf2f4ab4 100644 --- a/arch/ia64/include/asm/irqflags.h +++ b/arch/ia64/include/asm/irqflags.h @@ -89,6 +89,7 @@ static inline bool arch_irqs_disabled(void) static inline void arch_safe_halt(void) { + arch_local_irq_enable(); ia64_pal_halt_light(); /* PAL_HALT_LIGHT */ } -- 2.20.1