diff options
Diffstat (limited to 'drivers/iommu/intel_irq_remapping.c')
| -rw-r--r-- | drivers/iommu/intel_irq_remapping.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/iommu/intel_irq_remapping.c b/drivers/iommu/intel_irq_remapping.c index 757e0b0d19ff..0df41f6264f5 100644 --- a/drivers/iommu/intel_irq_remapping.c +++ b/drivers/iommu/intel_irq_remapping.c @@ -70,6 +70,11 @@ static int get_irte(int irq, struct irte *entry) raw_spin_lock_irqsave(&irq_2_ir_lock, flags); + if (unlikely(!irq_iommu->iommu)) { + raw_spin_unlock_irqrestore(&irq_2_ir_lock, flags); + return -1; + } + index = irq_iommu->irte_index + irq_iommu->sub_handle; *entry = *(irq_iommu->iommu->ir_table->base + index); |