On Wed, Mar 18, 2026 at 07:45:19PM +0800, Shuai Xue wrote:

On 3/18/26 3:15 AM, Nicolin Chen wrote:

quoted

diff --git a/include/linux/iommu.h b/include/linux/iommu.h
index 9ba12b2164724..9b5f94e566ff9 100644
--- a/include/linux/iommu.h
+++ b/include/linux/iommu.h

@@ -891,6 +891,8 @@ static inline struct iommu_device *__iommu_get_iommu_dev(struct device *dev)
  #define iommu_get_iommu_dev(dev, type, member) \
  	container_of(__iommu_get_iommu_dev(dev), type, member)
+void iommu_report_device_broken(struct device *dev);
+

This declaration is inside the #ifdef CONFIG_IOMMU_API section, but
there's no corresponding stub in the #else block. While current
callers (arm-smmu-v3) always have CONFIG_IOMMU_API, for API
completeness, please add a stub.

Yes. That's a miss.

Thanks
Nicolin