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 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