[PATCH v4 2/3] drm/xe/sriov: Shifting GGTT area post migration

[Dan Carpenter]

Hi Tomasz,

kernel test robot noticed the following build warnings:

https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Tomasz-Lis/drm-drm_mm-Safe-macro-for-iterating-through-nodes-in-range/20250307-102511
base:   https://gitlab.freedesktop.org/drm/xe/kernel.git drm-xe-next
patch link:    https://lore.kernel.org/r/20250306222126.3382322-3-tomasz.lis%40intel.com
patch subject: [PATCH v4 2/3] drm/xe/sriov: Shifting GGTT area post migration
config: openrisc-randconfig-r073-20250321 (https://download.01.org/0day-ci/archive/20250323/202503231159.himCw1Ch-lkp@intel.com/config)
compiler: or1k-linux-gcc (GCC) 11.5.0

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 at intel.com>
| Reported-by: Dan Carpenter <dan.carpenter at linaro.org>
| Closes: https://lore.kernel.org/r/202503231159.himCw1Ch-lkp@intel.com/

smatch warnings:
drivers/gpu/drm/xe/xe_sriov_vf.c:191 vf_post_migration_fixup_ggtt_nodes() error: uninitialized symbol 'err'.

vim +/err +191 drivers/gpu/drm/xe/xe_sriov_vf.c

253478de2cb134 Tomasz Lis 2025-03-06  174  static int vf_post_migration_fixup_ggtt_nodes(struct xe_device *xe)
253478de2cb134 Tomasz Lis 2025-03-06  175  {
253478de2cb134 Tomasz Lis 2025-03-06  176  	struct xe_tile *tile;
253478de2cb134 Tomasz Lis 2025-03-06  177  	unsigned int id;
253478de2cb134 Tomasz Lis 2025-03-06  178  	int err;
253478de2cb134 Tomasz Lis 2025-03-06  179  
253478de2cb134 Tomasz Lis 2025-03-06  180  	for_each_tile(tile, xe, id) {
253478de2cb134 Tomasz Lis 2025-03-06  181  		struct xe_gt *gt = tile->primary_gt;
253478de2cb134 Tomasz Lis 2025-03-06  182  		int ret;
253478de2cb134 Tomasz Lis 2025-03-06  183  
253478de2cb134 Tomasz Lis 2025-03-06  184  		/* media doesn't have its own ggtt */
253478de2cb134 Tomasz Lis 2025-03-06  185  		if (xe_gt_is_media_type(gt))
253478de2cb134 Tomasz Lis 2025-03-06  186  			continue;
253478de2cb134 Tomasz Lis 2025-03-06  187  		ret = xe_gt_sriov_vf_fixup_ggtt_nodes(gt);
253478de2cb134 Tomasz Lis 2025-03-06  188  		if (ret != ENODATA)
253478de2cb134 Tomasz Lis 2025-03-06  189  			err = ret;

err isn't initialized on else path.

253478de2cb134 Tomasz Lis 2025-03-06  190  	}
253478de2cb134 Tomasz Lis 2025-03-06 @191  	return err;
253478de2cb134 Tomasz Lis 2025-03-06  192  }

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