Hi Dave,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 
head:   1001354ca34179f3db924eb66672442a173147dc
commit: 85d1225ec066b2ef46fbd0ed1bae78ae1f3e6c91 drm/i915: Introduce & use new 
lightweight SGL iterators
date:   5 months ago
config: x86_64-randconfig-a0-10160938 (attached as .config)
compiler: gcc-4.4 (Debian 4.4.7-8) 4.4.7
        git checkout 85d1225ec066b2ef46fbd0ed1bae78ae1f3e6c91
        # save the attached .config to linux build tree
        make ARCH=x86_64 

Note: it may well be a FALSE warning. FWIW you are at least aware of it now.

All errors (new ones prefixed by >>):

   cc1: warnings being treated as errors
   drivers/gpu/drm/i915/i915_gem_gtt.c: In function 'gen8_ggtt_insert_entries':
>> drivers/gpu/drm/i915/i915_gem_gtt.c:2367: error: 'gtt_entry' may be used 
>> uninitialized in this function
   drivers/gpu/drm/i915/i915_gem_gtt.c: In function 'gen6_ggtt_insert_entries':
   drivers/gpu/drm/i915/i915_gem_gtt.c:2442: error: 'gtt_entry' may be used 
uninitialized in this function

vim +/gtt_entry +2367 drivers/gpu/drm/i915/i915_gem_gtt.c

  2361                                       enum i915_cache_level level, u32 
  2362  {
  2363          struct drm_i915_private *dev_priv = to_i915(vm->dev);
  2364          struct i915_ggtt *ggtt = i915_vm_to_ggtt(vm);
  2365          struct sgt_iter sgt_iter;
  2366          gen8_pte_t __iomem *gtt_entries;
> 2367          gen8_pte_t gtt_entry;
  2368          dma_addr_t addr;
  2369          int rpm_atomic_seq;
  2370          int i = 0;

0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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