[Intel-gfx] [PATCH 16/21] drm/i915/gem: Delay context creation

[kernel test robot]

Hi Jason,

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 drm-exynos/exynos-drm-next next-20210423]
[cannot apply to tegra-drm/drm/tegra/for-next drm/drm-next v5.12-rc8]
[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/Jason-Ekstrand/drm-i915-gem-ioctl-clean-ups/20210424-063511
base:   git://anongit.freedesktop.org/drm-intel for-linux-next
config: x86_64-rhel-8.3 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce (this is a W=1 build):
        # https://github.com/0day-ci/linux/commit/e00622bd8a3f3eccbb22721c2f8857bdfb7d5d9d
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Jason-Ekstrand/drm-i915-gem-ioctl-clean-ups/20210424-063511
        git checkout e00622bd8a3f3eccbb22721c2f8857bdfb7d5d9d
        # save the attached .config to linux build tree
        make W=1 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/gem/i915_gem_context.c:2439:1: warning: no previous prototype for 'lazy_create_context_locked' [-Wmissing-prototypes]
    2439 | lazy_create_context_locked(struct drm_i915_file_private *file_priv,
         | ^~~~~~~~~~~~~~~~~~~~~~~~~~


vim +/lazy_create_context_locked +2439 drivers/gpu/drm/i915/gem/i915_gem_context.c

  2437	
  2438	struct i915_gem_context *
> 2439	lazy_create_context_locked(struct drm_i915_file_private *file_priv,
  2440				   struct i915_gem_proto_context *pc, u32 id)
  2441	{
  2442		struct i915_gem_context *ctx;
  2443		void *old;
  2444	
  2445		ctx = i915_gem_create_context(file_priv->dev_priv, pc);
  2446		if (IS_ERR(ctx))
  2447			return ctx;
  2448	
  2449		gem_context_register(ctx, file_priv, id);
  2450	
  2451		old = xa_erase(&file_priv->proto_context_xa, id);
  2452		GEM_BUG_ON(old != pc);
  2453		proto_context_close(pc);
  2454	
  2455		/* One for the xarray and one for the caller */
  2456		return i915_gem_context_get(ctx);
  2457	}
  2458	

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