[anolis-intel-cloud:devel-6.6 98/98] ./include/linux/iommu.h:1918:40: error: 'struct iommu_plb_gather' declared inside parameter list will not be visible outside of this definition or declaration

[kernel test robot <lkp@intel.com>]

:::::: 
:::::: Manual check reason: "low confidence bisect report"
:::::: 

BCC: lkp@intel.com
CC: oe-kbuild-all@lists.linux.dev
TO: aubrey.li@linux.intel.com

tree:   https://gitee.com/anolis/intel-cloud-kernel.git devel-6.6
head:   02e32237447fad73b1113af3e12dddaf2b08b5f6
commit: 51aee14260ab017517da536fbc531488b8e67975 [98/98] iommu/ummu-core: introduce iommu sva permission operation
:::::: branch date: 33 hours ago
:::::: commit date: 8 days ago
config: x86_64-allnoconfig-bpf (https://download.01.org/0day-ci/archive/20260930/202609301517.uGvbfJft-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/20260930/202609301517.uGvbfJft-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/r/202609301517.uGvbfJft-lkp@intel.com/

All error/warnings (new ones prefixed by >>):

   In file included from kernel/fork.c:103:
>> ./include/linux/iommu.h:1918:40: warning: 'struct iommu_plb_gather' declared inside parameter list will not be visible outside of this definition or declaration
    1918 |                                 struct iommu_plb_gather *plb_gather) {}
         |                                        ^~~~~~~~~~~~~~~~
--
   In file included from drivers/net/ethernet/linkdata/sxe2/base/compat/sxe2_compat.h:22,
                    from drivers/net/ethernet/linkdata/sxe2/sxe2pf/sxe2.h:35,
                    from drivers/net/ethernet/linkdata/sxe2/sxe2pf/sxe2_acl.c:25:
>> ./include/linux/iommu.h:1918:40: error: 'struct iommu_plb_gather' declared inside parameter list will not be visible outside of this definition or declaration [-Werror]
    1918 |                                 struct iommu_plb_gather *plb_gather) {}
         |                                        ^~~~~~~~~~~~~~~~
   cc1: all warnings being treated as errors
--
   In file included from drivers/net/ethernet/linkdata/sxe2/base/compat/sxe2_compat.h:22,
                    from drivers/net/ethernet/linkdata/sxe2/sxe2pf/sxe2_main.c:23:
>> ./include/linux/iommu.h:1918:40: error: 'struct iommu_plb_gather' declared inside parameter list will not be visible outside of this definition or declaration [-Werror]
    1918 |                                 struct iommu_plb_gather *plb_gather) {}
         |                                        ^~~~~~~~~~~~~~~~
   drivers/net/ethernet/linkdata/sxe2/sxe2pf/sxe2_main.c:1533:27: error: 'sxe2_pm_resume' declared 'static' but never defined [-Werror=unused-function]
    1533 | static int __maybe_unused sxe2_pm_resume(struct device *dev);
         |                           ^~~~~~~~~~~~~~
   drivers/net/ethernet/linkdata/sxe2/sxe2pf/sxe2_main.c:1534:27: error: 'sxe2_pm_suspend' declared 'static' but never defined [-Werror=unused-function]
    1534 | static int __maybe_unused sxe2_pm_suspend(struct device *dev);
         |                           ^~~~~~~~~~~~~~~
   cc1: all warnings being treated as errors
--
   In file included from drivers/net/ethernet/linkdata/sxe2vf/base/compat/sxe2_compat.h:22,
                    from drivers/net/ethernet/linkdata/sxe2vf/sxe2vf/sxe2vf_main.c:24:
>> ./include/linux/iommu.h:1918:40: error: 'struct iommu_plb_gather' declared inside parameter list will not be visible outside of this definition or declaration [-Werror]
    1918 |                                 struct iommu_plb_gather *plb_gather) {}
         |                                        ^~~~~~~~~~~~~~~~
   drivers/net/ethernet/linkdata/sxe2vf/sxe2vf/sxe2vf_main.c:1864:27: error: 'sxe2vf_pm_resume' declared 'static' but never defined [-Werror=unused-function]
    1864 | static int __maybe_unused sxe2vf_pm_resume(struct device *dev);
         |                           ^~~~~~~~~~~~~~~~
   drivers/net/ethernet/linkdata/sxe2vf/sxe2vf/sxe2vf_main.c:1865:27: error: 'sxe2vf_pm_suspend' declared 'static' but never defined [-Werror=unused-function]
    1865 | static int __maybe_unused sxe2vf_pm_suspend(struct device *dev);
         |                           ^~~~~~~~~~~~~~~~~
   cc1: all warnings being treated as errors


vim +1918 ./include/linux/iommu.h

51aee14260ab01 Lei Gong 2025-08-21  1910  
51aee14260ab01 Lei Gong 2025-08-21  1911  static inline int iommu_sva_ungrant(struct iommu_sva *sva, void *va,
51aee14260ab01 Lei Gong 2025-08-21  1912  				    size_t size, void *cookie)
51aee14260ab01 Lei Gong 2025-08-21  1913  {
51aee14260ab01 Lei Gong 2025-08-21  1914  	return -EOPNOTSUPP;
51aee14260ab01 Lei Gong 2025-08-21  1915  }
51aee14260ab01 Lei Gong 2025-08-21  1916  static inline void iommu_plb_sync_all(struct iommu_domain *domain) {}
51aee14260ab01 Lei Gong 2025-08-21  1917  static inline void iommu_plb_sync(struct iommu_domain *domain,
51aee14260ab01 Lei Gong 2025-08-21 @1918  				struct iommu_plb_gather *plb_gather) {}

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