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-rw-r--r--include/linux/iommu.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/iommu.h b/include/linux/iommu.h
index 3c9da1f8979e..20b592dec335 100644
--- a/include/linux/iommu.h
+++ b/include/linux/iommu.h
@@ -605,6 +605,10 @@ struct iommu_group *fsl_mc_device_group(struct device *dev);
* @flags: IOMMU_FWSPEC_* flags
* @num_ids: number of associated device IDs
* @ids: IDs which this device may present to the IOMMU
+ *
+ * Note that the IDs (and any other information, really) stored in this structure should be
+ * considered private to the IOMMU device driver and are not to be used directly by IOMMU
+ * consumers.
*/
struct iommu_fwspec {
const struct iommu_ops *ops;