3:15 a.m.
tree: git://people.freedesktop.org/~mlankhorst/linux locking-rework
head: 93635df9d2cb90420b6a12d3125708d7835dc273
commit: e1a39c7284bff8995e43acbcccfc3ff2681e067a [4/63] drm/i915: Pin timeline map after
first timeline pin, v3.
config: i386-randconfig-s002-20201016 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-15) 9.3.0
reproduce:
# apt-get install sparse
# sparse version: v0.6.3-rc1-2-g368fd9ce-dirty
git remote add mlankhorst git://people.freedesktop.org/~mlankhorst/linux
git fetch --no-tags mlankhorst locking-rework
git checkout e1a39c7284bff8995e43acbcccfc3ff2681e067a
# 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 <lkp(a)intel.com>
"sparse warnings: (new ones prefixed by >>)"
> drivers/gpu/drm/i915/gt/intel_timeline.c:67:25: sparse: sparse:
incorrect type in argument 1 (different modifiers) @@ expected void volatile *__p @@
got unsigned int const [usertype] *hwsp_seqno @@
> drivers/gpu/drm/i915/gt/intel_timeline.c:67:25: sparse: expected void volatile
*__p
> drivers/gpu/drm/i915/gt/intel_timeline.c:67:25: sparse: got unsigned int const
[usertype] *hwsp_seqno
vim +67 drivers/gpu/drm/i915/gt/intel_timeline.c
53
54 I915_SELFTEST_EXPORT int
55 intel_timeline_pin_map(struct intel_timeline *timeline)
56 {
57 struct drm_i915_gem_object *obj = timeline->hwsp_ggtt->obj;
58 u32 ofs = offset_in_page(timeline->hwsp_offset);
59 void *vaddr;
60
61 vaddr = i915_gem_object_pin_map(obj, I915_MAP_WB);
62 if (IS_ERR(vaddr))
63 return PTR_ERR(vaddr);
64
65 timeline->hwsp_map = vaddr;
66 timeline->hwsp_seqno = memset(vaddr + ofs, 0, CACHELINE_BYTES);
67 clflush(timeline->hwsp_seqno);
68
69 return 0;
70 }
71
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org