[kbuild-all] [zen-kernel-zen-kernel:5.11/zen-sauce 6/24] drivers/gpu/drm/drm_plane_helper.c:126:14: warning: 'visible' is used uninitialized in this function

tree: https://github.com/zen-kernel/zen-kernel 5.11/zen-sauce head: 791993e1c1fd68c5c05295efabebb8b4b3579f3a commit: 456aec2082a997b3bd1e27092eab880fc140119c [6/24] ZEN: Disable stack conservation for GCC config: mips-randconfig-m031-20210215 (attached as .config) compiler: mipsel-linux-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 # https://github.com/zen-kernel/zen-kernel/commit/456aec2082a997b3bd1e27092... git remote add zen-kernel-zen-kernel https://github.com/zen-kernel/zen-kernel git fetch --no-tags zen-kernel-zen-kernel 5.11/zen-sauce git checkout 456aec2082a997b3bd1e27092eab880fc140119c # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=mips 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': 126 | .visible = *visible, | ^~~~~~~~ drivers/gpu/drm/drm_plane_helper.c:178:7: note: 'visible' was declared here 178 | bool visible; | ^~~~~~~ vim +/visible +126 drivers/gpu/drm/drm_plane_helper.c c103d1cfb3543f Matt Roper 2014-04-01 100 84c0851794d40b Daniel Vetter 2018-10-04 101 static int drm_plane_helper_check_update(struct drm_plane *plane, df86af9133b495 Ville Syrjälä 2016-08-08 102 struct drm_crtc *crtc, df86af9133b495 Ville Syrjälä 2016-08-08 103 struct drm_framebuffer *fb, df86af9133b495 Ville Syrjälä 2016-08-08 104 struct drm_rect *src, df86af9133b495 Ville Syrjälä 2016-08-08 105 struct drm_rect *dst, df86af9133b495 Ville Syrjälä 2016-08-08 106 unsigned int rotation, df86af9133b495 Ville Syrjälä 2016-08-08 107 int min_scale, df86af9133b495 Ville Syrjälä 2016-08-08 108 int max_scale, df86af9133b495 Ville Syrjälä 2016-08-08 109 bool can_position, df86af9133b495 Ville Syrjälä 2016-08-08 110 bool can_update_disabled, df86af9133b495 Ville Syrjälä 2016-08-08 111 bool *visible) df86af9133b495 Ville Syrjälä 2016-08-08 112 { 10b47ee02d1ae6 Ville Syrjälä 2017-11-01 113 struct drm_plane_state plane_state = { df86af9133b495 Ville Syrjälä 2016-08-08 114 .plane = plane, df86af9133b495 Ville Syrjälä 2016-08-08 115 .crtc = crtc, df86af9133b495 Ville Syrjälä 2016-08-08 116 .fb = fb, df86af9133b495 Ville Syrjälä 2016-08-08 117 .src_x = src->x1, df86af9133b495 Ville Syrjälä 2016-08-08 118 .src_y = src->y1, df86af9133b495 Ville Syrjälä 2016-08-08 119 .src_w = drm_rect_width(src), df86af9133b495 Ville Syrjälä 2016-08-08 120 .src_h = drm_rect_height(src), df86af9133b495 Ville Syrjälä 2016-08-08 121 .crtc_x = dst->x1, df86af9133b495 Ville Syrjälä 2016-08-08 122 .crtc_y = dst->y1, df86af9133b495 Ville Syrjälä 2016-08-08 123 .crtc_w = drm_rect_width(dst), df86af9133b495 Ville Syrjälä 2016-08-08 124 .crtc_h = drm_rect_height(dst), df86af9133b495 Ville Syrjälä 2016-08-08 125 .rotation = rotation, df86af9133b495 Ville Syrjälä 2016-08-08 @126 .visible = *visible, df86af9133b495 Ville Syrjälä 2016-08-08 127 }; 10b47ee02d1ae6 Ville Syrjälä 2017-11-01 128 struct drm_crtc_state crtc_state = { 10b47ee02d1ae6 Ville Syrjälä 2017-11-01 129 .crtc = crtc, 10b47ee02d1ae6 Ville Syrjälä 2017-11-01 130 .enable = crtc->enabled, 81af63a4af82e7 Ville Syrjälä 2018-01-23 131 .mode = crtc->mode, 10b47ee02d1ae6 Ville Syrjälä 2017-11-01 132 }; df86af9133b495 Ville Syrjälä 2016-08-08 133 int ret; df86af9133b495 Ville Syrjälä 2016-08-08 134 a01cb8ba3f6282 Ville Syrjälä 2017-11-01 135 ret = drm_atomic_helper_check_plane_state(&plane_state, &crtc_state, 81af63a4af82e7 Ville Syrjälä 2018-01-23 136 min_scale, max_scale, df86af9133b495 Ville Syrjälä 2016-08-08 137 can_position, df86af9133b495 Ville Syrjälä 2016-08-08 138 can_update_disabled); df86af9133b495 Ville Syrjälä 2016-08-08 139 if (ret) df86af9133b495 Ville Syrjälä 2016-08-08 140 return ret; df86af9133b495 Ville Syrjälä 2016-08-08 141 10b47ee02d1ae6 Ville Syrjälä 2017-11-01 142 *src = plane_state.src; 10b47ee02d1ae6 Ville Syrjälä 2017-11-01 143 *dst = plane_state.dst; 10b47ee02d1ae6 Ville Syrjälä 2017-11-01 144 *visible = plane_state.visible; df86af9133b495 Ville Syrjälä 2016-08-08 145 df86af9133b495 Ville Syrjälä 2016-08-08 146 return 0; df86af9133b495 Ville Syrjälä 2016-08-08 147 } 7daf8d54c17c6d Matt Roper 2014-05-29 148 :::::: The code at line 126 was first introduced by commit :::::: df86af9133b4958a04c44828d29617eb1a6ff31c drm/plane-helper: Add drm_plane_helper_check_state() :::::: TO: Ville Syrjälä <ville.syrjala(a)linux.intel.com&gt; :::::: CC: Sean Paul <seanpaul(a)chromium.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org