[kbuild-all] [zen-kernel-zen-kernel:5.9/zen-sauce 24/24] drivers/gpu/drm/drm_plane_helper.c:113:25: warning: 'visible' is used uninitialized in this function

tree: https://github.com/zen-kernel/zen-kernel 5.9/zen-sauce head: a49dc684580cbc31949bfc4220f8ed5346382c49 commit: a49dc684580cbc31949bfc4220f8ed5346382c49 [24/24] kbuild: Disable stack conservation for GCC config: x86_64-randconfig-s022-20201012 (attached as .config) compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.3-rc1-dirty # https://github.com/zen-kernel/zen-kernel/commit/a49dc684580cbc31949bfc422... git remote add zen-kernel-zen-kernel https://github.com/zen-kernel/zen-kernel git fetch --no-tags zen-kernel-zen-kernel 5.9/zen-sauce git checkout a49dc684580cbc31949bfc4220f8ed5346382c49 # save the attached .config to linux build tree make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' 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 warnings (new ones prefixed by >>): drivers/gpu/drm/drm_plane_helper.c: In function 'drm_primary_helper_update': 113 | struct drm_plane_state plane_state = { | ^~~~~~~~~~~ drivers/gpu/drm/drm_plane_helper.c:178:7: note: 'visible' was declared here 178 | bool visible; | ^~~~~~~ vim +/visible +113 drivers/gpu/drm/drm_plane_helper.c c103d1cfb3543f6 Matt Roper 2014-04-01 100 84c0851794d40b1 Daniel Vetter 2018-10-04 101 static int drm_plane_helper_check_update(struct drm_plane *plane, df86af9133b4958 Ville Syrjälä 2016-08-08 102 struct drm_crtc *crtc, df86af9133b4958 Ville Syrjälä 2016-08-08 103 struct drm_framebuffer *fb, df86af9133b4958 Ville Syrjälä 2016-08-08 104 struct drm_rect *src, df86af9133b4958 Ville Syrjälä 2016-08-08 105 struct drm_rect *dst, df86af9133b4958 Ville Syrjälä 2016-08-08 106 unsigned int rotation, df86af9133b4958 Ville Syrjälä 2016-08-08 107 int min_scale, df86af9133b4958 Ville Syrjälä 2016-08-08 108 int max_scale, df86af9133b4958 Ville Syrjälä 2016-08-08 109 bool can_position, df86af9133b4958 Ville Syrjälä 2016-08-08 110 bool can_update_disabled, df86af9133b4958 Ville Syrjälä 2016-08-08 111 bool *visible) df86af9133b4958 Ville Syrjälä 2016-08-08 112 { 10b47ee02d1ae66 Ville Syrjälä 2017-11-01 @113 struct drm_plane_state plane_state = { df86af9133b4958 Ville Syrjälä 2016-08-08 114 .plane = plane, df86af9133b4958 Ville Syrjälä 2016-08-08 115 .crtc = crtc, df86af9133b4958 Ville Syrjälä 2016-08-08 116 .fb = fb, df86af9133b4958 Ville Syrjälä 2016-08-08 117 .src_x = src->x1, df86af9133b4958 Ville Syrjälä 2016-08-08 118 .src_y = src->y1, df86af9133b4958 Ville Syrjälä 2016-08-08 119 .src_w = drm_rect_width(src), df86af9133b4958 Ville Syrjälä 2016-08-08 120 .src_h = drm_rect_height(src), df86af9133b4958 Ville Syrjälä 2016-08-08 121 .crtc_x = dst->x1, df86af9133b4958 Ville Syrjälä 2016-08-08 122 .crtc_y = dst->y1, df86af9133b4958 Ville Syrjälä 2016-08-08 123 .crtc_w = drm_rect_width(dst), df86af9133b4958 Ville Syrjälä 2016-08-08 124 .crtc_h = drm_rect_height(dst), df86af9133b4958 Ville Syrjälä 2016-08-08 125 .rotation = rotation, df86af9133b4958 Ville Syrjälä 2016-08-08 126 .visible = *visible, df86af9133b4958 Ville Syrjälä 2016-08-08 127 }; 10b47ee02d1ae66 Ville Syrjälä 2017-11-01 128 struct drm_crtc_state crtc_state = { 10b47ee02d1ae66 Ville Syrjälä 2017-11-01 129 .crtc = crtc, 10b47ee02d1ae66 Ville Syrjälä 2017-11-01 130 .enable = crtc->enabled, 81af63a4af82e73 Ville Syrjälä 2018-01-23 131 .mode = crtc->mode, 10b47ee02d1ae66 Ville Syrjälä 2017-11-01 132 }; df86af9133b4958 Ville Syrjälä 2016-08-08 133 int ret; df86af9133b4958 Ville Syrjälä 2016-08-08 134 a01cb8ba3f62829 Ville Syrjälä 2017-11-01 135 ret = drm_atomic_helper_check_plane_state(&plane_state, &crtc_state, 81af63a4af82e73 Ville Syrjälä 2018-01-23 136 min_scale, max_scale, df86af9133b4958 Ville Syrjälä 2016-08-08 137 can_position, df86af9133b4958 Ville Syrjälä 2016-08-08 138 can_update_disabled); df86af9133b4958 Ville Syrjälä 2016-08-08 139 if (ret) df86af9133b4958 Ville Syrjälä 2016-08-08 140 return ret; df86af9133b4958 Ville Syrjälä 2016-08-08 141 10b47ee02d1ae66 Ville Syrjälä 2017-11-01 142 *src = plane_state.src; 10b47ee02d1ae66 Ville Syrjälä 2017-11-01 143 *dst = plane_state.dst; 10b47ee02d1ae66 Ville Syrjälä 2017-11-01 144 *visible = plane_state.visible; df86af9133b4958 Ville Syrjälä 2016-08-08 145 df86af9133b4958 Ville Syrjälä 2016-08-08 146 return 0; df86af9133b4958 Ville Syrjälä 2016-08-08 147 } 7daf8d54c17c6da Matt Roper 2014-05-29 148 :::::: The code at line 113 was first introduced by commit :::::: 10b47ee02d1ae66160058241cf5b962f64e81b47 drm: Check crtc_state->enable rather than crtc->enabled in drm_plane_helper_check_state() :::::: TO: Ville Syrjälä <ville.syrjala(a)linux.intel.com&gt; :::::: CC: Ville Syrjälä <ville.syrjala(a)linux.intel.com&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org