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IOMMU Fix for v4.11-rc0

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* Fix a boot crash caused by the VT-d driver when booted with IOMMU
 	  disabled. This was introduced with the recent IOMMU changes.
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Merge tag 'iommu-fix-v4.11-rc0' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu

Pull IOMMU fix from Joerg Roedel:
 "Fix a boot crash caused by the VT-d driver when booted with IOMMU
  disabled. This was introduced with the recent IOMMU changes"

* tag 'iommu-fix-v4.11-rc0' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
  iommu/vt-d: Fix crash on boot when DMAR is disabled
This commit is contained in:
Linus Torvalds 2017-02-22 18:11:18 -08:00
commit 5066e4a340
1 changed files with 4 additions and 2 deletions
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6
drivers/iommu/dmar.c
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@ -1108,8 +1108,10 @@ static int alloc_iommu(struct dmar_drhd_unit *drhd)
static void free_iommu(struct intel_iommu *iommu)
{
iommu_device_sysfs_remove(&iommu->iommu);
iommu_device_unregister(&iommu->iommu);
if (intel_iommu_enabled) {
iommu_device_unregister(&iommu->iommu);
iommu_device_sysfs_remove(&iommu->iommu);
}
if (iommu->irq) {
if (iommu->pr_irq) {