Re: [PATCH V3 1/3] iommu/arm-smmu-v3: Add device-tree support for CMDQV driver

[Ashish Mhetre <amhetre@nvidia.com>]

On 12/3/2025 2:05 PM, kernel test robot wrote:
> External email: Use caution opening links or attachments
>
>
> Hi Ashish,
>
> kernel test robot noticed the following build errors:
>
> [auto build test ERROR on next-20251201]
> [also build test ERROR on v6.18]
> [cannot apply to robh/for-next linus/master v6.18 v6.18-rc7 v6.18-rc6]
> [If your patch is applied to the wrong git tree, kindly drop us a note.
> And when submitting patch, we suggest to use '--base' as documented in
> https://git-scm.com/docs/git-format-patch#_base_tree_information]
>
> url:    https://github.com/intel-lab-lkp/linux/commits/Ashish-Mhetre/iommu-arm-smmu-v3-Add-device-tree-support-for-CMDQV-driver/20251202-003517
> base:   next-20251201
> patch link:    https://lore.kernel.org/r/20251201163219.3237266-2-amhetre%40nvidia.com
> patch subject: [PATCH V3 1/3] iommu/arm-smmu-v3: Add device-tree support for CMDQV driver
> config: arm64-allmodconfig (https://download.01.org/0day-ci/archive/20251203/202512031601.IpliwbHW-lkp@intel.com/config)
> compiler: clang version 19.1.7 (https://github.com/llvm/llvm-project cd708029e0b2869e80abe31ddb175f7c35361f90)
> reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251203/202512031601.IpliwbHW-lkp@intel.com/reproduce)
>
> If you fix the issue in a separate patch/commit (i.e. not just a new version of
> the same patch/commit), kindly add following tags
> | Reported-by: kernel test robot <lkp@intel.com>
> | Closes: https://lore.kernel.org/oe-kbuild-all/202512031601.IpliwbHW-lkp@intel.com/
>
> All errors (new ones prefixed by >>):
>
>>> ld.lld: error: duplicate symbol: init_module
>     >>> defined at arm-smmu-v3.c
>     >>>            drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.o:(init_module)
>     >>> defined at tegra241-cmdqv.c
>     >>>            drivers/iommu/arm/arm-smmu-v3/tegra241-cmdqv.o:(.init.text+0x4)
> --
>>> ld.lld: error: duplicate symbol: cleanup_module
>     >>> defined at arm-smmu-v3.c
>     >>>            drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.o:(cleanup_module)
>     >>> defined at tegra241-cmdqv.c
>     >>>            drivers/iommu/arm/arm-smmu-v3/tegra241-cmdqv.o:(.exit.text+0x4)

Hi Nic, Robin,

How do you suggest fixing this? Is it fine to compile tegra241-cmdqv as 
separate module
and export tegra241_cmdqv_probe() to fix this warning?
I am using GCC compiler and was not able to reproduce this with W=1 build.

Thanks,
Ashish Mhetre

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