irq: make irq2_iommu to use dyn_array

Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 10 insertions, 2 deletions

diff --git a/drivers/pci/intr_remapping.c b/drivers/pci/intr_remapping.c
index 980566e3352b..6961be807684 100644
--- a/drivers/pci/intr_remapping.c
+++ b/drivers/pci/intr_remapping.c
@@ -1,3 +1,4 @@
+#include <linux/interrupt.h>
 #include <linux/dmar.h>
 #include <linux/spinlock.h>
 #include <linux/jiffies.h>
@@ -11,12 +12,19 @@ static struct ioapic_scope ir_ioapic[MAX_IO_APICS];
 static int ir_ioapic_num;
 int intr_remapping_enabled;
 
-static struct {
+struct irq_2_iommu {
         struct intel_iommu *iommu;
         u16 irte_index;
         u16 sub_handle;
         u8  irte_mask;
-} irq_2_iommu[NR_IRQS];
+};
+
+#ifdef CONFIG_HAVE_DYNA_ARRAY
+static struct irq_2_iommu *irq_2_iommu;
+DEFINE_DYN_ARRAY(irq_2_iommu, sizeof(struct irq_2_iommu), nr_irqs, PAGE_SIZE, NULL);
+#else
+static struct irq_2_iommu irq_2_iommu[NR_IRQS];
+#endif
 
 static DEFINE_SPINLOCK(irq_2_ir_lock);