diff options
| -rw-r--r-- | drivers/iommu/intel-svm.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/drivers/iommu/intel-svm.c b/drivers/iommu/intel-svm.c index ed1cf7c5a43b..6643277e321e 100644 --- a/drivers/iommu/intel-svm.c +++ b/drivers/iommu/intel-svm.c @@ -129,6 +129,7 @@ int intel_svm_enable_prq(struct intel_iommu *iommu) pr_err("IOMMU: %s: Failed to request IRQ for page request queue\n", iommu->name); dmar_free_hwirq(irq); + iommu->pr_irq = 0; goto err; } dmar_writeq(iommu->reg + DMAR_PQH_REG, 0ULL); @@ -144,9 +145,11 @@ int intel_svm_finish_prq(struct intel_iommu *iommu) dmar_writeq(iommu->reg + DMAR_PQT_REG, 0ULL); dmar_writeq(iommu->reg + DMAR_PQA_REG, 0ULL); - free_irq(iommu->pr_irq, iommu); - dmar_free_hwirq(iommu->pr_irq); - iommu->pr_irq = 0; + if (iommu->pr_irq) { + free_irq(iommu->pr_irq, iommu); + dmar_free_hwirq(iommu->pr_irq); + iommu->pr_irq = 0; + } free_pages((unsigned long)iommu->prq, PRQ_ORDER); iommu->prq = NULL; |