tree: https://github.com/intel/linux-intel-lts.git 4.19/android_r head: 968adf904a287574c10a384c2e3b1e88994ad843 commit: b652a52d36a85d1b731921ba08e701d7150ce200 [19120/21556] Merge branch 'aosp/android-4.19-stable' into android_r config: x86_64-randconfig-a013-20210201 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 275c6af7d7f1ed63a03d05b4484413e447133269) 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/intel/linux-intel-lts/commit/b652a52d36a85d1b731921ba0... git remote add intel-linux-intel-lts https://github.com/intel/linux-intel-lts.git git fetch --no-tags intel-linux-intel-lts 4.19/android_r git checkout b652a52d36a85d1b731921ba08e701d7150ce200 # 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 error/warnings (new ones prefixed by >>): In file included from drivers/media/pci/intel/ipu3/ipu3-cio2.c:15: In file included from include/linux/delay.h:22: In file included from include/linux/kernel.h:10: In file included from include/linux/bitops.h:19: In file included from arch/x86/include/asm/bitops.h:510: In file included from include/asm-generic/bitops/le.h:6: In file included from arch/x86/include/uapi/asm/byteorder.h:5: In file included from include/linux/byteorder/little_endian.h:11: for (i = 0; i < len; i++) ~ ^ ~~~ include/linux/byteorder/generic.h:203:16: warning: comparison of integers of different signs: 'int' and 'size_t' (aka 'unsigned long') [-Wsign-compare] for (i = 0; i < len; i++) ~ ^ ~~~ In file included from drivers/media/pci/intel/ipu3/ipu3-cio2.c:16: In file included from include/linux/interrupt.h:11: In file included from include/linux/hardirq.h:5: In file included from include/linux/preempt.h:81: In file included from arch/x86/include/asm/preempt.h:7: if (unlikely(sz >= 0 && sz < bytes)) { ~~ ^ ~~~~~ include/linux/compiler.h:77:42: note: expanded from macro 'unlikely' # define unlikely(x) __builtin_expect(!!(x), 0) ^ In file included from drivers/media/pci/intel/ipu3/ipu3-cio2.c:17: In file included from include/linux/module.h:13: In file included from include/linux/kmod.h:22: In file included from include/linux/umh.h:4: In file included from include/linux/gfp.h:6: if (likely(!nodes && zonelist_zone_idx(z) <= highest_zoneidx)) ~~~~~~~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~~ include/linux/compiler.h:76:40: note: expanded from macro 'likely' # define likely(x) __builtin_expect(!!(x), 1) ^ In file included from drivers/media/pci/intel/ipu3/ipu3-cio2.c:18: In file included from include/linux/pci.h:1365: In file included from include/linux/dmapool.h:14: In file included from include/linux/scatterlist.h:8: In file included from include/linux/mm.h:20: include/linux/percpu-refcount.h:183:3: warning: comparison of integers of different signs: 'unsigned long' and 'int' [-Wsign-compare] this_cpu_add(*percpu_count, nr); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/percpu-defs.h:510:33: note: expanded from macro 'this_cpu_add' #define this_cpu_add(pcp, val) __pcpu_size_call(this_cpu_add_, pcp, val) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/percpu-defs.h:381:11: note: expanded from macro '__pcpu_size_call' case 8: stem##8(variable, __VA_ARGS__);break; \ ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ <scratch space>:165:1: note: expanded from here this_cpu_add_8 ^ arch/x86/include/asm/percpu.h:480:35: note: expanded from macro 'this_cpu_add_8' #define this_cpu_add_8(pcp, val) percpu_add_op((pcp), val) ^~~~~~~~~~~~~~~~~~~~~~~~~ arch/x86/include/asm/percpu.h:131:31: note: expanded from macro 'percpu_add_op' ((val) == 1 || (val) == -1)) ? \ ~~~ ^ ~~ In file included from drivers/media/pci/intel/ipu3/ipu3-cio2.c:18: In file included from include/linux/pci.h:1365: In file included from include/linux/dmapool.h:14: In file included from include/linux/scatterlist.h:8: In file included from include/linux/mm.h:20: include/linux/percpu-refcount.h:282:3: warning: comparison of integers of different signs: 'unsigned long' and 'int' [-Wsign-compare] this_cpu_sub(*percpu_count, nr); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/percpu-defs.h:520:33: note: expanded from macro 'this_cpu_sub' #define this_cpu_sub(pcp, val) this_cpu_add(pcp, -(typeof(pcp))(val)) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/percpu-defs.h:510:33: note: expanded from macro 'this_cpu_add' #define this_cpu_add(pcp, val) __pcpu_size_call(this_cpu_add_, pcp, val) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/percpu-defs.h:381:11: note: expanded from macro '__pcpu_size_call' case 8: stem##8(variable, __VA_ARGS__);break; \ ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ <scratch space>:325:1: note: expanded from here this_cpu_add_8 ^ arch/x86/include/asm/percpu.h:480:35: note: expanded from macro 'this_cpu_add_8' #define this_cpu_add_8(pcp, val) percpu_add_op((pcp), val) ^~~~~~~~~~~~~~~~~~~~~~~~~ arch/x86/include/asm/percpu.h:131:31: note: expanded from macro 'percpu_add_op' ((val) == 1 || (val) == -1)) ? \ ~~~ ^ ~~ In file included from drivers/media/pci/intel/ipu3/ipu3-cio2.c:18: In file included from include/linux/pci.h:1365: In file included from include/linux/dmapool.h:14: In file included from include/linux/scatterlist.h:8: In file included from include/linux/mm.h:26: In file included from include/linux/page_ref.h:7: return page->flags == PAGE_POISON_PATTERN; ~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~~~~~~ for (i = 0; i < lops; i++) { ~ ^ ~~~~ 8 warnings generated. -- struct intel_digital_port *conn_to_dig_port(struct intel_connector *connector) ^ drivers/gpu/drm/i915/intel_hdcp.c:183:1: note: declare 'static' if the function is not intended to be used outside of this translation unit struct intel_digital_port *conn_to_dig_port(struct intel_connector *connector) ^ static int intel_hdcp_enable(struct intel_connector *connector) ^ drivers/gpu/drm/i915/intel_hdcp.c:846:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int intel_hdcp_enable(struct intel_connector *connector) ^ static int intel_hdcp_disable(struct intel_connector *connector) ^ drivers/gpu/drm/i915/intel_hdcp.c:858:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int intel_hdcp_disable(struct intel_connector *connector) ^ static 3 errors generated. -- i915_gem_object_create_gvtbuffer(struct drm_device *dev, ^ drivers/gpu/drm/i915/i915_gem_gvtbuffer.c:115:1: note: declare 'static' if the function is not intended to be used outside of this translation unit struct drm_i915_gem_object * ^ static 1 error generated. -- int bxt_check_planes(struct intel_vgpu *vgpu, int pipe) ^ drivers/gpu/drm/i915/gvt/display.c:527:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int bxt_check_planes(struct intel_vgpu *vgpu, int pipe) ^ static void intel_gvt_init_pipe_info(struct intel_gvt *gvt) ^ drivers/gpu/drm/i915/gvt/display.c:543:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void intel_gvt_init_pipe_info(struct intel_gvt *gvt) ^ static int setup_virtual_monitors(struct intel_vgpu *vgpu) ^ drivers/gpu/drm/i915/gvt/display.c:568:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int setup_virtual_monitors(struct intel_vgpu *vgpu) ^ static void clean_virtual_monitors(struct intel_vgpu *vgpu) ^ drivers/gpu/drm/i915/gvt/display.c:606:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void clean_virtual_monitors(struct intel_vgpu *vgpu) ^ static 4 errors generated. Kconfig warnings: (for reference only) WARNING: unmet direct dependencies detected for FB_BACKLIGHT Depends on HAS_IOMEM && FB Selected by - DRM_NOUVEAU && HAS_IOMEM && DRM && PCI && MMU && DRM_NOUVEAU_BACKLIGHT vim +/conn_to_dig_port +183 drivers/gpu/drm/i915/intel_hdcp.c ee5e5e7a5e0fde Sean Paul 2018-01-08 182 54c9b1c8df1df8 Romli, Khairul Anuar 2018-10-09 @183 struct intel_digital_port *conn_to_dig_port(struct intel_connector *connector) 54c9b1c8df1df8 Romli, Khairul Anuar 2018-10-09 184 { 54c9b1c8df1df8 Romli, Khairul Anuar 2018-10-09 185 return enc_to_dig_port(&intel_attached_encoder(&connector->base)->base); 54c9b1c8df1df8 Romli, Khairul Anuar 2018-10-09 186 } 54c9b1c8df1df8 Romli, Khairul Anuar 2018-10-09 187 :::::: The code at line 183 was first introduced by commit :::::: 54c9b1c8df1df89c0173aad2d559884a305c797c drm/i915: Passing the intel_connector to HDCP auth :::::: TO: Romli, Khairul Anuar <khairul.anuar.romli(a)intel.com&gt; :::::: CC: Pan, Kris <kris.pan(a)intel.com&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org