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iommu/vt-d: Don't dereference iommu_device if IOMMU_API is not built 

Since commit c40aaaac10 ("iommu/vt-d: Gracefully handle DMAR units
with no supported address widths") dmar.c needs struct iommu_device to
be selected. We can drop this dependency by not dereferencing struct
iommu_device if IOMMU_API is not selected and by reusing the information
stored in iommu->drhd->ignored instead.

This fixes the following build error when IOMMU_API is not selected:

drivers/iommu/intel/dmar.c: In function ‘free_iommu’:
drivers/iommu/intel/dmar.c:1139:41: error: ‘struct iommu_device’ has no member named ‘ops’
 1139 |  if (intel_iommu_enabled && iommu->iommu.ops) {
                                                ^

Fixes: c40aaaac10 ("iommu/vt-d: Gracefully handle DMAR units with no supported address widths")
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Acked-by: Lu Baolu <baolu.lu@linux.intel.com>
Acked-by: David Woodhouse <dwmw@amazon.co.uk>
Link: https://lore.kernel.org/r/20201013073055.11262-1-brgl@bgdev.pl
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Bartosz Golaszewski 2020-10-13 09:30:55 +02:00 committed by Joerg Roedel
parent 7e3c3883c3
commit 9def3b1a07
1 changed files with 1 additions and 1 deletions
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2
drivers/iommu/intel/dmar.c
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@ -1133,7 +1133,7 @@ error:
static void free_iommu(struct intel_iommu *iommu)
{
if (intel_iommu_enabled && iommu->iommu.ops) {
if (intel_iommu_enabled && !iommu->drhd->ignored) {
iommu_device_unregister(&iommu->iommu);
iommu_device_sysfs_remove(&iommu->iommu);
}