sparseirq: fix intr-remap with dyn_array/nr_irqs changes]
In irq_2_iommu_alloc() and set_irte_irq(), irq_to_desc or
irq_2_iommu pointers may not be allocated. So use the routines
which will allocate them if they are not already allocated.
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/drivers/pci/intr_remapping.c b/drivers/pci/intr_remapping.c
index 23372c8..2dcf973 100644
--- a/drivers/pci/intr_remapping.c
+++ b/drivers/pci/intr_remapping.c
@@ -76,9 +76,10 @@
struct irq_desc *desc;
struct irq_2_iommu *irq_iommu;
- desc = irq_to_desc(irq);
-
- BUG_ON(!desc);
+ /*
+ * alloc irq desc if not allocated already.
+ */
+ desc = irq_to_desc_alloc(irq);
irq_iommu = desc->irq_2_iommu;
@@ -255,11 +256,8 @@
struct irq_2_iommu *irq_iommu;
spin_lock(&irq_2_ir_lock);
- irq_iommu = valid_irq_2_iommu(irq);
- if (!irq_iommu) {
- spin_unlock(&irq_2_ir_lock);
- return -1;
- }
+
+ irq_iommu = irq_2_iommu_alloc(irq);
irq_iommu->iommu = iommu;
irq_iommu->irte_index = index;