Hi Chris,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on drm-intel/for-linux-next]
[also build test WARNING on drm-tip/drm-tip linus/master v5.9 next-20201021]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    
https://github.com/0day-ci/linux/commits/Chris-Wilson/drm-i915-gt-Use-the-local-HWSP-offset-during-submission/20201022-060619
base:   git://anongit.freedesktop.org/drm-intel for-linux-next
config: i386-randconfig-s002-20201021 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-15) 9.3.0
reproduce:
        # apt-get install sparse
        # sparse version: v0.6.3-dirty
        # 
https://github.com/0day-ci/linux/commit/034e13871db55a3eed93d3157408443584dddd1f
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review 
Chris-Wilson/drm-i915-gt-Use-the-local-HWSP-offset-during-submission/20201022-060619
        git checkout 034e13871db55a3eed93d3157408443584dddd1f
        # save the attached .config to linux build tree
        make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=i386 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <l...@intel.com>


"sparse warnings: (new ones prefixed by >>)"
>> drivers/gpu/drm/i915/gt/intel_lrc.c:3553:26: sparse: sparse: dereference of 
>> noderef expression

vim +3553 drivers/gpu/drm/i915/gt/intel_lrc.c

  3549  
  3550  static u32 hwsp_offset(struct i915_request *rq)
  3551  {
  3552          if (rq->hwsp_cacheline)
> 3553                  return rq->hwsp_cacheline->ggtt_offset;
  3554          else
  3555                  return i915_request_active_timeline(rq)->hwsp_offset;
  3556  }
  3557  

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-...@lists.01.org

Attachment: .config.gz
Description: application/gzip

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