tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: aab7ee9f8ff0110bfcd594b33dc33748dc1baf46 commit: 12885ecbfe62df4358d452080d3b8feef54ec8cb [8529/9127] drm/nouveau/kms/nvd9-: Add CRC support config: arm-tegra_defconfig (attached as .config) compiler: arm-linux-gnueabi-gcc (GCC) 9.3.0 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 git checkout 12885ecbfe62df4358d452080d3b8feef54ec8cb # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm 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/gpu/drm/nouveau/nouveau_display.c:47: drivers/gpu/drm/nouveau/dispnv50/crc.h: In function 'nv50_head_crc_late_register': > > drivers/gpu/drm/nouveau/dispnv50/crc.h:106:47: error: parameter name > > omitted 106 | static inline int nv50_head_crc_late_register(struct nv50_head *) {} | ^~~~~~~~~~~~~~~~~~ > > drivers/gpu/drm/nouveau/dispnv50/crc.h:106:54: warning: no return > > statement in function returning non-void [-Wreturn-type] 106 | static inline int nv50_head_crc_late_register(struct nv50_head *) {} | ^~~~~~~~~ drivers/gpu/drm/nouveau/dispnv50/crc.h: In function 'nv50_crc_handle_vblank': > > drivers/gpu/drm/nouveau/dispnv50/crc.h:108:57: warning: 'return' with a > > value, in function returning void [-Wreturn-type] 108 | nv50_crc_handle_vblank(struct nv50_head *head) { return 0; } | ^ drivers/gpu/drm/nouveau/dispnv50/crc.h:108:1: note: declared here 108 | nv50_crc_handle_vblank(struct nv50_head *head) { return 0; } | ^~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/nouveau/dispnv50/crc.h: In function 'nv50_crc_atomic_check': drivers/gpu/drm/nouveau/dispnv50/crc.h:111:23: error: parameter name omitted 111 | nv50_crc_atomic_check(struct nv50_head *, struct nv50_head_atom *, | ^~~~~~~~~~~~~~~~~~ drivers/gpu/drm/nouveau/dispnv50/crc.h:111:43: error: parameter name omitted 111 | nv50_crc_atomic_check(struct nv50_head *, struct nv50_head_atom *, | ^~~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/nouveau/dispnv50/crc.h:112:9: error: parameter name omitted 112 | struct nv50_head_atom *) {} | ^~~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/nouveau/dispnv50/crc.h:112:16: warning: no return statement in function returning non-void [-Wreturn-type] 112 | struct nv50_head_atom *) {} | ^~~~~~~~~~~~~~ drivers/gpu/drm/nouveau/dispnv50/crc.h: In function 'nv50_crc_atomic_stop_reporting': drivers/gpu/drm/nouveau/dispnv50/crc.h:114:32: error: parameter name omitted 114 | nv50_crc_atomic_stop_reporting(struct drm_atomic_state *) {} | ^~~~~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/nouveau/dispnv50/crc.h: In function 'nv50_crc_atomic_prepare_notifier_contexts': drivers/gpu/drm/nouveau/dispnv50/crc.h:116:43: error: parameter name omitted 116 | nv50_crc_atomic_prepare_notifier_contexts(struct drm_atomic_state *) {} | ^~~~~~~~~~~~~~~~~~~~~~~ ~~ drivers/gpu/drm/nouveau/dispnv50/crc.h: In function 'nv50_crc_atomic_start_reporting': drivers/gpu/drm/nouveau/dispnv50/crc.h:118:33: error: parameter name omitted 118 | nv50_crc_atomic_start_reporting(struct drm_atomic_state *) {} | ^~~~~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/nouveau/dispnv50/crc.h: In function 'nv50_crc_atomic_set': drivers/gpu/drm/nouveau/dispnv50/crc.h:120:21: error: parameter name omitted 120 | nv50_crc_atomic_set(struct nv50_head *, struct nv50_head_atom *) {} | ^~~~~~~~~~~~~~~~~~ drivers/gpu/drm/nouveau/dispnv50/crc.h:120:41: error: parameter name omitted 120 | nv50_crc_atomic_set(struct nv50_head *, struct nv50_head_atom *) {} | ^~~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/nouveau/dispnv50/crc.h: In function 'nv50_crc_atomic_clr': drivers/gpu/drm/nouveau/dispnv50/crc.h:122:21: error: parameter name omitted 122 | nv50_crc_atomic_clr(struct nv50_head *) {} | ^~~~~~~~~~~~~~~~~~ drivers/gpu/drm/nouveau/nouveau_display.c: In function 'nouveau_framebuffer_new': drivers/gpu/drm/nouveau/nouveau_display.c:286:15: warning: variable 'width' set but not used [-Wunused-but-set-variable] 286 | unsigned int width, height, i; | ^~~~~ -- In file included from drivers/gpu/drm/nouveau/dispnv50/atom.h:5, from drivers/gpu/drm/nouveau/dispnv50/disp.c:25: drivers/gpu/drm/nouveau/dispnv50/crc.h: In function 'nv50_head_crc_late_register': > > drivers/gpu/drm/nouveau/dispnv50/crc.h:106:47: error: parameter name > > omitted 106 | static inline int nv50_head_crc_late_register(struct nv50_head *) {} | ^~~~~~~~~~~~~~~~~~ > > drivers/gpu/drm/nouveau/dispnv50/crc.h:106:54: warning: no return > > statement in function returning non-void [-Wreturn-type] 106 | static inline int nv50_head_crc_late_register(struct nv50_head *) {} | ^~~~~~~~~ drivers/gpu/drm/nouveau/dispnv50/crc.h: In function 'nv50_crc_handle_vblank': > > drivers/gpu/drm/nouveau/dispnv50/crc.h:108:57: warning: 'return' with a > > value, in function returning void [-Wreturn-type] 108 | nv50_crc_handle_vblank(struct nv50_head *head) { return 0; } | ^ drivers/gpu/drm/nouveau/dispnv50/crc.h:108:1: note: declared here 108 | nv50_crc_handle_vblank(struct nv50_head *head) { return 0; } | ^~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/nouveau/dispnv50/crc.h: In function 'nv50_crc_atomic_check': drivers/gpu/drm/nouveau/dispnv50/crc.h:111:23: error: parameter name omitted 111 | nv50_crc_atomic_check(struct nv50_head *, struct nv50_head_atom *, | ^~~~~~~~~~~~~~~~~~ drivers/gpu/drm/nouveau/dispnv50/crc.h:111:43: error: parameter name omitted 111 | nv50_crc_atomic_check(struct nv50_head *, struct nv50_head_atom *, | ^~~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/nouveau/dispnv50/crc.h:112:9: error: parameter name omitted 112 | struct nv50_head_atom *) {} | ^~~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/nouveau/dispnv50/crc.h:112:16: warning: no return statement in function returning non-void [-Wreturn-type] 112 | struct nv50_head_atom *) {} | ^~~~~~~~~~~~~~ drivers/gpu/drm/nouveau/dispnv50/crc.h: In function 'nv50_crc_atomic_stop_reporting': drivers/gpu/drm/nouveau/dispnv50/crc.h:114:32: error: parameter name omitted 114 | nv50_crc_atomic_stop_reporting(struct drm_atomic_state *) {} | ^~~~~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/nouveau/dispnv50/crc.h: In function 'nv50_crc_atomic_prepare_notifier_contexts': drivers/gpu/drm/nouveau/dispnv50/crc.h:116:43: error: parameter name omitted 116 | nv50_crc_atomic_prepare_notifier_contexts(struct drm_atomic_state *) {} | ^~~~~~~~~~~~~~~~~~~~~~~ ~~ drivers/gpu/drm/nouveau/dispnv50/crc.h: In function 'nv50_crc_atomic_start_reporting': drivers/gpu/drm/nouveau/dispnv50/crc.h:118:33: error: parameter name omitted 118 | nv50_crc_atomic_start_reporting(struct drm_atomic_state *) {} | ^~~~~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/nouveau/dispnv50/crc.h: In function 'nv50_crc_atomic_set': drivers/gpu/drm/nouveau/dispnv50/crc.h:120:21: error: parameter name omitted 120 | nv50_crc_atomic_set(struct nv50_head *, struct nv50_head_atom *) {} | ^~~~~~~~~~~~~~~~~~ drivers/gpu/drm/nouveau/dispnv50/crc.h:120:41: error: parameter name omitted 120 | nv50_crc_atomic_set(struct nv50_head *, struct nv50_head_atom *) {} | ^~~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/nouveau/dispnv50/crc.h: In function 'nv50_crc_atomic_clr': drivers/gpu/drm/nouveau/dispnv50/crc.h:122:21: error: parameter name omitted 122 | nv50_crc_atomic_clr(struct nv50_head *) {} | ^~~~~~~~~~~~~~~~~~ drivers/gpu/drm/nouveau/dispnv50/disp.c: In function 'nv50_mstm_cleanup': drivers/gpu/drm/nouveau/dispnv50/disp.c:1232:6: warning: variable 'ret' set but not used [-Wunused-but-set-variable] 1232 | int ret; | ^~~ drivers/gpu/drm/nouveau/dispnv50/disp.c: In function 'nv50_mstm_prepare': drivers/gpu/drm/nouveau/dispnv50/disp.c:1256:6: warning: variable 'ret' set but not used [-Wunused-but-set-variable] 1256 | int ret; | ^~~ drivers/gpu/drm/nouveau/dispnv50/disp.c: At top level: drivers/gpu/drm/nouveau/dispnv50/disp.c:2465:1: warning: no previous prototype for 'nv50_display_create' [-Wmissing-prototypes] 2465 | nv50_display_create(struct drm_device *dev) | ^~~~~~~~~~~~~~~~~~~ -- In file included from drivers/gpu/drm/nouveau/dispnv50/atom.h:5, from drivers/gpu/drm/nouveau/dispnv50/core.h:4, from drivers/gpu/drm/nouveau/dispnv50/core.c:22: drivers/gpu/drm/nouveau/dispnv50/crc.h: In function 'nv50_head_crc_late_register': > > drivers/gpu/drm/nouveau/dispnv50/crc.h:106:47: error: parameter name > > omitted 106 | static inline int nv50_head_crc_late_register(struct nv50_head *) {} | ^~~~~~~~~~~~~~~~~~ > > drivers/gpu/drm/nouveau/dispnv50/crc.h:106:54: warning: no return > > statement in function returning non-void [-Wreturn-type] 106 | static inline int nv50_head_crc_late_register(struct nv50_head *) {} | ^~~~~~~~~ drivers/gpu/drm/nouveau/dispnv50/crc.h: In function 'nv50_crc_handle_vblank': > > drivers/gpu/drm/nouveau/dispnv50/crc.h:108:57: warning: 'return' with a > > value, in function returning void [-Wreturn-type] 108 | nv50_crc_handle_vblank(struct nv50_head *head) { return 0; } | ^ drivers/gpu/drm/nouveau/dispnv50/crc.h:108:1: note: declared here 108 | nv50_crc_handle_vblank(struct nv50_head *head) { return 0; } | ^~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/nouveau/dispnv50/crc.h: In function 'nv50_crc_atomic_check': drivers/gpu/drm/nouveau/dispnv50/crc.h:111:23: error: parameter name omitted 111 | nv50_crc_atomic_check(struct nv50_head *, struct nv50_head_atom *, | ^~~~~~~~~~~~~~~~~~ drivers/gpu/drm/nouveau/dispnv50/crc.h:111:43: error: parameter name omitted 111 | nv50_crc_atomic_check(struct nv50_head *, struct nv50_head_atom *, | ^~~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/nouveau/dispnv50/crc.h:112:9: error: parameter name omitted 112 | struct nv50_head_atom *) {} | ^~~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/nouveau/dispnv50/crc.h:112:16: warning: no return statement in function returning non-void [-Wreturn-type] 112 | struct nv50_head_atom *) {} | ^~~~~~~~~~~~~~ drivers/gpu/drm/nouveau/dispnv50/crc.h: In function 'nv50_crc_atomic_stop_reporting': drivers/gpu/drm/nouveau/dispnv50/crc.h:114:32: error: parameter name omitted 114 | nv50_crc_atomic_stop_reporting(struct drm_atomic_state *) {} | ^~~~~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/nouveau/dispnv50/crc.h: In function 'nv50_crc_atomic_prepare_notifier_contexts': drivers/gpu/drm/nouveau/dispnv50/crc.h:116:43: error: parameter name omitted 116 | nv50_crc_atomic_prepare_notifier_contexts(struct drm_atomic_state *) {} | ^~~~~~~~~~~~~~~~~~~~~~~ ~~ drivers/gpu/drm/nouveau/dispnv50/crc.h: In function 'nv50_crc_atomic_start_reporting': drivers/gpu/drm/nouveau/dispnv50/crc.h:118:33: error: parameter name omitted 118 | nv50_crc_atomic_start_reporting(struct drm_atomic_state *) {} | ^~~~~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/nouveau/dispnv50/crc.h: In function 'nv50_crc_atomic_set': drivers/gpu/drm/nouveau/dispnv50/crc.h:120:21: error: parameter name omitted 120 | nv50_crc_atomic_set(struct nv50_head *, struct nv50_head_atom *) {} | ^~~~~~~~~~~~~~~~~~ drivers/gpu/drm/nouveau/dispnv50/crc.h:120:41: error: parameter name omitted 120 | nv50_crc_atomic_set(struct nv50_head *, struct nv50_head_atom *) {} | ^~~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/nouveau/dispnv50/crc.h: In function 'nv50_crc_atomic_clr': drivers/gpu/drm/nouveau/dispnv50/crc.h:122:21: error: parameter name omitted 122 | nv50_crc_atomic_clr(struct nv50_head *) {} | ^~~~~~~~~~~~~~~~~~ -- In file included from drivers/gpu/drm/nouveau/dispnv50/atom.h:5, from drivers/gpu/drm/nouveau/dispnv50/head.h:7, from drivers/gpu/drm/nouveau/dispnv50/headc57d.c:22: drivers/gpu/drm/nouveau/dispnv50/crc.h: In function 'nv50_head_crc_late_register': > > drivers/gpu/drm/nouveau/dispnv50/crc.h:106:47: error: parameter name > > omitted 106 | static inline int nv50_head_crc_late_register(struct nv50_head *) {} | ^~~~~~~~~~~~~~~~~~ > > drivers/gpu/drm/nouveau/dispnv50/crc.h:106:54: warning: no return > > statement in function returning non-void [-Wreturn-type] 106 | static inline int nv50_head_crc_late_register(struct nv50_head *) {} | ^~~~~~~~~ drivers/gpu/drm/nouveau/dispnv50/crc.h: In function 'nv50_crc_handle_vblank': > > drivers/gpu/drm/nouveau/dispnv50/crc.h:108:57: warning: 'return' with a > > value, in function returning void [-Wreturn-type] 108 | nv50_crc_handle_vblank(struct nv50_head *head) { return 0; } | ^ drivers/gpu/drm/nouveau/dispnv50/crc.h:108:1: note: declared here 108 | nv50_crc_handle_vblank(struct nv50_head *head) { return 0; } | ^~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/nouveau/dispnv50/crc.h: In function 'nv50_crc_atomic_check': drivers/gpu/drm/nouveau/dispnv50/crc.h:111:23: error: parameter name omitted 111 | nv50_crc_atomic_check(struct nv50_head *, struct nv50_head_atom *, | ^~~~~~~~~~~~~~~~~~ drivers/gpu/drm/nouveau/dispnv50/crc.h:111:43: error: parameter name omitted 111 | nv50_crc_atomic_check(struct nv50_head *, struct nv50_head_atom *, | ^~~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/nouveau/dispnv50/crc.h:112:9: error: parameter name omitted 112 | struct nv50_head_atom *) {} | ^~~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/nouveau/dispnv50/crc.h:112:16: warning: no return statement in function returning non-void [-Wreturn-type] 112 | struct nv50_head_atom *) {} | ^~~~~~~~~~~~~~ drivers/gpu/drm/nouveau/dispnv50/crc.h: In function 'nv50_crc_atomic_stop_reporting': drivers/gpu/drm/nouveau/dispnv50/crc.h:114:32: error: parameter name omitted 114 | nv50_crc_atomic_stop_reporting(struct drm_atomic_state *) {} | ^~~~~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/nouveau/dispnv50/crc.h: In function 'nv50_crc_atomic_prepare_notifier_contexts': drivers/gpu/drm/nouveau/dispnv50/crc.h:116:43: error: parameter name omitted 116 | nv50_crc_atomic_prepare_notifier_contexts(struct drm_atomic_state *) {} | ^~~~~~~~~~~~~~~~~~~~~~~ ~~ drivers/gpu/drm/nouveau/dispnv50/crc.h: In function 'nv50_crc_atomic_start_reporting': drivers/gpu/drm/nouveau/dispnv50/crc.h:118:33: error: parameter name omitted 118 | nv50_crc_atomic_start_reporting(struct drm_atomic_state *) {} | ^~~~~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/nouveau/dispnv50/crc.h: In function 'nv50_crc_atomic_set': drivers/gpu/drm/nouveau/dispnv50/crc.h:120:21: error: parameter name omitted 120 | nv50_crc_atomic_set(struct nv50_head *, struct nv50_head_atom *) {} | ^~~~~~~~~~~~~~~~~~ drivers/gpu/drm/nouveau/dispnv50/crc.h:120:41: error: parameter name omitted 120 | nv50_crc_atomic_set(struct nv50_head *, struct nv50_head_atom *) {} | ^~~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/nouveau/dispnv50/crc.h: In function 'nv50_crc_atomic_clr': drivers/gpu/drm/nouveau/dispnv50/crc.h:122:21: error: parameter name omitted 122 | nv50_crc_atomic_clr(struct nv50_head *) {} | ^~~~~~~~~~~~~~~~~~ drivers/gpu/drm/nouveau/dispnv50/headc57d.c: At top level: drivers/gpu/drm/nouveau/dispnv50/headc57d.c:77:1: warning: no previous prototype for 'headc57d_olut_clr' [-Wmissing-prototypes] 77 | headc57d_olut_clr(struct nv50_head *head) | ^~~~~~~~~~~~~~~~~ drivers/gpu/drm/nouveau/dispnv50/headc57d.c:89:1: warning: no previous prototype for 'headc57d_olut_set' [-Wmissing-prototypes] 89 | headc57d_olut_set(struct nv50_head *head, struct nv50_head_atom *asyh) | ^~~~~~~~~~~~~~~~~ drivers/gpu/drm/nouveau/dispnv50/headc57d.c:159:1: warning: no previous prototype for 'headc57d_olut' [-Wmissing-prototypes] 159 | headc57d_olut(struct nv50_head *head, struct nv50_head_atom *asyh, int size) | ^~~~~~~~~~~~~ vim +106 drivers/gpu/drm/nouveau/dispnv50/crc.h 104 105 static inline void nv50_crc_init(struct drm_device *dev) {} > 106 static inline int nv50_head_crc_late_register(struct nv50_head *) {} 107 static inline void > 108 nv50_crc_handle_vblank(struct nv50_head *head) { return 0; } 109 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org