[anolis-intel-cloud:devel-5.10 9/9] ./include/linux/iommu.h:1152:17: warning: 'iommu_get_pasid_from_domain' defined but not used

[anolis-intel-cloud:devel-5.10 9/9] ./include/linux/iommu.h:1152:17: warning: 'iommu_get_pasid_from_domain' defined but not used

[kernel test robot]

Hi Jacob,

FYI, the error/warning still remains.

tree:   https://gitee.com/anolis/intel-cloud-kernel.git devel-5.10
head:   e404899677bc470e620572471a562f09ea3de082
commit: ae98886a907851615758c891a5e488f1add0c69d [9/9] iommu: Add a helper to do PASID lookup from domain
config: x86_64-allnoconfig-bpf (https://download.01.org/0day-ci/archive/20261028/202610281354.OaDqIDLG-lkp@intel.com/config)
compiler: gcc-14 (Debian 14.2.0-19) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20261028/202610281354.OaDqIDLG-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/202610281354.OaDqIDLG-lkp@intel.com/

All warnings (new ones prefixed by >>):

   In file included from arch/x86/kernel/pci-dma.c:4:
>> ./include/linux/iommu.h:1152:17: warning: 'iommu_get_pasid_from_domain' defined but not used [-Wunused-function]
    1152 | static ioasid_t iommu_get_pasid_from_domain(struct device *dev,
         |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~


vim +/iommu_get_pasid_from_domain +1152 ./include/linux/iommu.h

  1147	
  1148	static inline void iommu_detach_device_pasid(struct iommu_domain *domain,
  1149						     struct device *dev, ioasid_t pasid)
  1150	{
  1151	}
> 1152	static ioasid_t iommu_get_pasid_from_domain(struct device *dev,
  1153						    struct iommu_domain *domain)
  1154	{
  1155		return INVALID_IOASID;
  1156	}
  1157	#endif /* CONFIG_IOMMU_API */
  1158	

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