[jgunthorpe:iommu_pt_arm64 16/53] drivers/iommu/generic_pt/fmt/../iommu_pt.h:62:22: warning: variable 'item_lg2sz' set but not used

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

tree:   https://github.com/jgunthorpe/linux iommu_pt_arm64
head:   386de42c67a6d6b567ec9167593768eec79b8ce5
commit: 9f2e457e1598eab7d293e370fef201274accfc35 [16/53] iommupt: Add PT_FEAT_DETAILED_GATHER
config: x86_64-rhel-9.4-ltp (https://download.01.org/0day-ci/archive/20260403/202604030213.YCdrx73u-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/20260403/202604030213.YCdrx73u-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/202604030213.YCdrx73u-lkp@intel.com/

All warnings (new ones prefixed by >>):

   In file included from drivers/iommu/generic_pt/fmt/iommu_template.h:40,
                    from drivers/iommu/generic_pt/fmt/iommu_amdv1.c:15:
   drivers/iommu/generic_pt/fmt/../iommu_pt.h: In function 'gather_add_leaf':
>> drivers/iommu/generic_pt/fmt/../iommu_pt.h:62:22: warning: variable 'item_lg2sz' set but not used [-Wunused-but-set-variable]
      62 |         unsigned int item_lg2sz;
         |                      ^~~~~~~~~~


vim +/item_lg2sz +62 drivers/iommu/generic_pt/fmt/../iommu_pt.h

    58	
    59	static void gather_add_leaf(struct iommupt_pending_gather *pending,
    60				    const struct pt_state *pts)
    61	{
  > 62		unsigned int item_lg2sz;
    63	
    64		if (!pts_feature(pts, PT_FEAT_DETAILED_GATHER))
    65			return;
    66	
    67		item_lg2sz = pt_table_item_lg2sz(pts);
    68	
    69		pending->leaf_levels_bitmap |= BIT(pts->level);
    70	}
    71	

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