Hi stable folks,

Please apply commit fc7bf4c0d65a ("drm/i915/selftests: Fix inconsistent IS_ERR and PTR_ERR") to 5.15, where it resolves a couple of instances of -Wuninitialized with clang-21 or newer that were introduced by commit cdb35d1ed6d2 ("drm/i915/gem: Migrate to system at dma-buf attach time (v7)") in 5.15.

In file included from drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c:329: drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c:105:18: error: variable 'dmabuf' is uninitialized when used here [-Werror,-Wuninitialized] 105 | PTR_ERR(dmabuf)); | ^~~~~~ drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c:94:24: note: initialize the variable 'dmabuf' to silence this warning 94 | struct dma_buf *dmabuf; | ^ | = NULL drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c:161:18: error: variable 'dmabuf' is uninitialized when used here [-Werror,-Wuninitialized] 161 | PTR_ERR(dmabuf)); | ^~~~~~ drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c:149:24: note: initialize the variable 'dmabuf' to silence this warning 149 | struct dma_buf *dmabuf; | ^ | = NULL

It applies and builds cleanly for me. If there are any issues, please let me know.

Cheers, Nathan