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authorJiang Liu <jiang.liu@linux.intel.com>2014-11-09 22:48:01 +0800
committerJoerg Roedel <jroedel@suse.de>2014-11-18 11:18:36 +0100
commit51acce33c4df6ee23b5ad4c2e6c239e0d6f25771 (patch)
treeb2862ac19da7f683be590e49d94e3c57eae89ca0 /drivers/iommu/intel_irq_remapping.c
parenta7a3dad944344caf034699b0c0e8dc51b469cf20 (diff)
iommu/vt-d: Enhance error recovery in function intel_enable_irq_remapping()
Enhance error recovery in function intel_enable_irq_remapping() by tearing down all created data structures. Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Reviewed-by: Yijing Wang <wangyijing@huawei.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu/intel_irq_remapping.c')
-rw-r--r--drivers/iommu/intel_irq_remapping.c8
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/iommu/intel_irq_remapping.c b/drivers/iommu/intel_irq_remapping.c
index 7af0b56dc2d1..27541d440849 100644
--- a/drivers/iommu/intel_irq_remapping.c
+++ b/drivers/iommu/intel_irq_remapping.c
@@ -702,9 +702,11 @@ static int __init intel_enable_irq_remapping(void)
return eim ? IRQ_REMAP_X2APIC_MODE : IRQ_REMAP_XAPIC_MODE;
error:
- /*
- * handle error condition gracefully here!
- */
+ for_each_iommu(iommu, drhd)
+ if (ecap_ir_support(iommu->ecap)) {
+ iommu_disable_irq_remapping(iommu);
+ intel_teardown_irq_remapping(iommu);
+ }
if (x2apic_present)
pr_warn("Failed to enable irq remapping. You are vulnerable to irq-injection attacks.\n");