[Intel-gfx] [PATCH 2/6] drm/i915/gt: Lock intel_engine_apply_whitelist with uncore->lock

[kernel test robot]

Hi Umesh,

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-rc7 next-20201002]
[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/Umesh-Nerlige-Ramappa/Allow-privileged-user-to-map-the-OA-buffer/20201003-073003
base:   git://anongit.freedesktop.org/drm-intel for-linux-next
config: x86_64-allyesconfig (attached as .config)
compiler: gcc-9 (Debian 9.3.0-15) 9.3.0
reproduce (this is a W=1 build):
        # https://github.com/0day-ci/linux/commit/d8a4c73d3c843dd6cb5bb248a90e5b4e0b28953c
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Umesh-Nerlige-Ramappa/Allow-privileged-user-to-map-the-OA-buffer/20201003-073003
        git checkout d8a4c73d3c843dd6cb5bb248a90e5b4e0b28953c
        # save the attached .config to linux build tree
        make W=1 ARCH=x86_64 

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

All warnings (new ones prefixed by >>):

>> drivers/gpu/drm/i915/gt/intel_workarounds.c:1648:6: warning: no previous prototype for 'intel_engine_apply_whitelist_locked' [-Wmissing-prototypes]
    1648 | void intel_engine_apply_whitelist_locked(struct intel_engine_cs *engine)
         |      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

vim +/intel_engine_apply_whitelist_locked +1648 drivers/gpu/drm/i915/gt/intel_workarounds.c

  1647	
> 1648	void intel_engine_apply_whitelist_locked(struct intel_engine_cs *engine)
  1649	{
  1650		const struct i915_wa_list *wal = &engine->whitelist;
  1651		struct intel_uncore *uncore = engine->uncore;
  1652		const u32 base = engine->mmio_base;
  1653		struct i915_wa *wa;
  1654		unsigned int i;
  1655		enum forcewake_domains fw;
  1656	
  1657		lockdep_assert_held(&uncore->lock);
  1658	
  1659		fw = wal_get_fw(uncore, wal, FW_REG_WRITE);
  1660		intel_uncore_forcewake_get__locked(uncore, fw);
  1661	
  1662		for (i = 0, wa = wal->list; i < wal->count; i++, wa++)
  1663			intel_uncore_write_fw(uncore,
  1664					      RING_FORCE_TO_NONPRIV(base, i),
  1665					      i915_mmio_reg_offset(wa->reg));
  1666	
  1667		/* And clear the rest just in case of garbage */
  1668		for (; i < RING_MAX_NONPRIV_SLOTS; i++)
  1669			intel_uncore_write_fw(uncore,
  1670					      RING_FORCE_TO_NONPRIV(base, i),
  1671					      i915_mmio_reg_offset(RING_NOPID(base)));
  1672	
  1673		intel_uncore_forcewake_put__locked(uncore, fw);
  1674	}
  1675	

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