Re: linux-next: build warning after merge of the iommufd tree

Jason Gunthorpe
2025-07-11T14:04:15Z

On Fri, Jul 11, 2025 at 06:35:26PM +1000, Stephen Rothwell wrote:
> Hi all,
>
> After merging the iommufd tree, today's linux-next build (htmldocs)
> produced this warning:
>
> include/uapi/linux/iommufd.h:607: warning: cannot understand function prototype: 'struct iommu_hw_info_tegra241_cmdqv '
>
> Introduced by commit
>
> b135de24cfc0 ("iommu/tegra241-cmdqv: Add user-space use support")
>
> You forgot the "struct" in the kerneldoc comment.

I fixed it with this:

--- a/include/uapi/linux/iommufd.h
+++ b/include/uapi/linux/iommufd.h
@@ -592,8 +592,9 @@ struct iommu_hw_info_arm_smmuv3 {
};

/**
- * iommu_hw_info_tegra241_cmdqv - NVIDIA Tegra241 CMDQV Hardware Information
- * (IOMMU_HW_INFO_TYPE_TEGRA241_CMDQV)
+ * struct iommu_hw_info_tegra241_cmdqv - NVIDIA Tegra241 CMDQV Hardware
+ * Information (IOMMU_HW_INFO_TYPE_TEGRA241_CMDQV)
+ *
* @flags: Must be 0
* @version: Version number for the CMDQ-V HW for PARAM bits[03:00]
* @log2vcmdqs: Log2 of the total number of VCMDQs for PARAM bits[07:04]

Thanks,
Jason