diff options
| -rw-r--r-- | arch/arm64/kernel/irq.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/arch/arm64/kernel/irq.c b/arch/arm64/kernel/irq.c index ad63bd50fa7b..2fe0b535de30 100644 --- a/arch/arm64/kernel/irq.c +++ b/arch/arm64/kernel/irq.c @@ -71,14 +71,20 @@ static void init_irq_stacks(void) } #endif -void (*handle_arch_irq)(struct pt_regs *) __ro_after_init; +static void default_handle_irq(struct pt_regs *regs) +{ + panic("IRQ taken without a root IRQ handler\n"); +} + +void (*handle_arch_irq)(struct pt_regs *) __ro_after_init = default_handle_irq; int __init set_handle_irq(void (*handle_irq)(struct pt_regs *)) { - if (handle_arch_irq) + if (handle_arch_irq != default_handle_irq) return -EBUSY; handle_arch_irq = handle_irq; + pr_info("Root IRQ handler: %ps\n", handle_irq); return 0; } @@ -87,8 +93,6 @@ void __init init_IRQ(void) init_irq_stacks(); init_irq_scs(); irqchip_init(); - if (!handle_arch_irq) - panic("No interrupt controller found."); if (system_uses_irq_prio_masking()) { /* |