Hi Jason, Thank you for the patch! Yet something to improve: [auto build test ERROR on drm-tip/drm-tip] [cannot apply to drm-intel/for-linux-next drm-exynos/exynos-drm-next tegra-drm/drm/tegra/for-next drm/drm-next v5.13-rc5 next-20210608] [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-ioct... base: git://anongit.freedesktop.org/drm/drm-tip drm-tip config: x86_64-randconfig-r011-20210608 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project d2012d965d60c3258b3a69d024491698f8aec386) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # install x86_64 cross compiling tool for clang build # apt-get install binutils-x86-64-linux-gnu # https://github.com/0day-ci/linux/commit/48a06ef4f7f3fbb4b4768b25829796cf2... 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-v6/20210609-123926 git checkout 48a06ef4f7f3fbb4b4768b25829796cf235de32c # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): drivers/gpu/drm/i915/gem/i915_gem_context.c:1910:1: error: no previous prototype for function 'finalize_create_context_locked' [-Werror,-Wmissing-prototypes] finalize_create_context_locked(struct drm_i915_file_private *file_priv, ^ drivers/gpu/drm/i915/gem/i915_gem_context.c:1909:1: note: declare 'static' if the function is not intended to be used outside of this translation unit struct i915_gem_context * ^ static gem_context_register(ctx, ext_data.fpriv, id); ^~ drivers/gpu/drm/i915/gem/i915_gem_context.c:1964:8: note: initialize the variable 'id' to silence this warning u32 id; ^ = 0 2 errors generated. vim +/id +2007 drivers/gpu/drm/i915/gem/i915_gem_context.c 1908 1909 struct i915_gem_context * 1911 struct i915_gem_proto_context *pc, u32 id) 1912 { 1913 struct i915_gem_context *ctx; 1914 void *old; 1915 1916 lockdep_assert_held(&file_priv->proto_context_lock); 1917 1918 ctx = i915_gem_create_context(file_priv->dev_priv, pc); 1919 if (IS_ERR(ctx)) 1920 return ctx; 1921 1922 gem_context_register(ctx, file_priv, id); 1923 1924 old = xa_erase(&file_priv->proto_context_xa, id); 1925 GEM_BUG_ON(old != pc); 1926 proto_context_close(pc); 1927 1928 /* One for the xarray and one for the caller */ 1929 return i915_gem_context_get(ctx); 1930 } 1931 1932 struct i915_gem_context * 1933 i915_gem_context_lookup(struct drm_i915_file_private *file_priv, u32 id) 1934 { 1935 struct i915_gem_proto_context *pc; 1936 struct i915_gem_context *ctx; 1937 1938 ctx = __context_lookup(file_priv, id); 1939 if (ctx) 1940 return ctx; 1941 1942 mutex_lock(&file_priv->proto_context_lock); 1943 /* Try one more time under the lock */ 1944 ctx = __context_lookup(file_priv, id); 1945 if (!ctx) { 1946 pc = xa_load(&file_priv->proto_context_xa, id); 1947 if (!pc) 1948 ctx = ERR_PTR(-ENOENT); 1949 else 1950 ctx = finalize_create_context_locked(file_priv, pc, id); 1951 } 1952 mutex_unlock(&file_priv->proto_context_lock); 1953 1954 return ctx; 1955 } 1956 1957 int i915_gem_context_create_ioctl(struct drm_device *dev, void *data, 1958 struct drm_file *file) 1959 { 1960 struct drm_i915_private *i915 = to_i915(dev); 1961 struct drm_i915_gem_context_create_ext *args = data; 1962 struct create_ext ext_data; 1963 int ret; 1964 u32 id; 1965 1966 if (!DRIVER_CAPS(i915)->has_logical_contexts) 1967 return -ENODEV; 1968 1969 if (args->flags & I915_CONTEXT_CREATE_FLAGS_UNKNOWN) 1970 return -EINVAL; 1971 1972 ret = intel_gt_terminally_wedged(&i915->gt); 1973 if (ret) 1974 return ret; 1975 1976 ext_data.fpriv = file->driver_priv; 1977 if (client_is_banned(ext_data.fpriv)) { 1978 drm_dbg(&i915->drm, 1979 "client %s[%d] banned from creating ctx\n", 1980 current->comm, task_pid_nr(current)); 1981 return -EIO; 1982 } 1983 1984 ext_data.pc = proto_context_create(i915, args->flags); 1985 if (IS_ERR(ext_data.pc)) 1986 return PTR_ERR(ext_data.pc); 1987 1988 if (args->flags & I915_CONTEXT_CREATE_FLAGS_USE_EXTENSIONS) { 1989 ret = i915_user_extensions(u64_to_user_ptr(args->extensions), 1990 create_extensions, 1991 ARRAY_SIZE(create_extensions), 1992 &ext_data); 1993 if (ret) 1994 goto err_pc; 1995 } 1996 1997 if (GRAPHICS_VER(i915) > 12) { 1998 struct i915_gem_context *ctx; 1999 2000 ctx = i915_gem_create_context(i915, ext_data.pc); 2001 if (IS_ERR(ctx)) { 2002 ret = PTR_ERR(ctx); 2003 goto err_pc; 2004 } 2005 2006 proto_context_close(ext_data.pc); 2008 } else { 2009 ret = proto_context_register(ext_data.fpriv, ext_data.pc, &id); 2010 if (ret < 0) 2011 goto err_pc; 2012 } 2013 2014 args->ctx_id = id; 2015 drm_dbg(&i915->drm, "HW context %d created\n", args->ctx_id); 2016 2017 return 0; 2018 2019 err_pc: 2020 proto_context_close(ext_data.pc); 2021 return ret; 2022 } 2023 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org