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path: root/drivers/acpi/arm64/iort.c
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Diffstat (limited to 'drivers/acpi/arm64/iort.c')
-rw-r--r--drivers/acpi/arm64/iort.c22
1 files changed, 14 insertions, 8 deletions
diff --git a/drivers/acpi/arm64/iort.c b/drivers/acpi/arm64/iort.c
index c5fecf97ee2f..797b28dc7b34 100644
--- a/drivers/acpi/arm64/iort.c
+++ b/drivers/acpi/arm64/iort.c
@@ -666,14 +666,6 @@ static const struct iommu_ops *iort_iommu_xlate(struct device *dev,
int ret = -ENODEV;
struct fwnode_handle *iort_fwnode;
- /*
- * If we already translated the fwspec there
- * is nothing left to do, return the iommu_ops.
- */
- ops = iort_fwspec_iommu_ops(dev->iommu_fwspec);
- if (ops)
- return ops;
-
if (node) {
iort_fwnode = iort_get_fwnode(node);
if (!iort_fwnode)
@@ -735,6 +727,14 @@ const struct iommu_ops *iort_iommu_configure(struct device *dev)
u32 streamid = 0;
int err;
+ /*
+ * If we already translated the fwspec there
+ * is nothing left to do, return the iommu_ops.
+ */
+ ops = iort_fwspec_iommu_ops(dev->iommu_fwspec);
+ if (ops)
+ return ops;
+
if (dev_is_pci(dev)) {
struct pci_bus *bus = to_pci_dev(dev)->bus;
u32 rid;
@@ -782,6 +782,12 @@ const struct iommu_ops *iort_iommu_configure(struct device *dev)
if (err)
ops = ERR_PTR(err);
+ /* Ignore all other errors apart from EPROBE_DEFER */
+ if (IS_ERR(ops) && (PTR_ERR(ops) != -EPROBE_DEFER)) {
+ dev_dbg(dev, "Adding to IOMMU failed: %ld\n", PTR_ERR(ops));
+ ops = NULL;
+ }
+
return ops;
}