linux-kernel - linux-next: build failure after merge of the iommu tree

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Message-ID: <aW57LhM6g2KnrV_w@sirena.org.uk>
Date: Mon, 19 Jan 2026 18:42:54 +0000
From: Mark Brown <broonie@...nel.org>
To: Joerg Roedel <joro@...tes.org>,
	Suravee Suthikulpanit <suravee.suthikulpanit@....com>
Cc: Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Linux Next Mailing List <linux-next@...r.kernel.org>
Subject: linux-next: build failure after merge of the iommu tree

Hi all,

After merging the iommu tree, today's linux-next build (x86_64
allmodconfig) failed like this:

/tmp/next/build/drivers/iommu/amd/iommufd.c: In function 'amd_iommufd_viommu_destroy':
/tmp/next/build/drivers/iommu/amd/iommufd.c:62:27: error: unused variable 'iommu' [-Werror=unused-variable]
   62 |         struct amd_iommu *iommu = container_of(viommu->iommu_dev, struct amd_iommu, iommu);
      |                           ^~~~~
cc1: all warnings being treated as errors

Caused by commit

   757d2b1fdf5b7 (iommu/amd: Introduce gDomID-to-hDomID Mapping and handle parent domain invalidation)

I used the version from 20260116 instead.