Hi Ville, FYI, the error/warning still remains. tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: aab7ee9f8ff0110bfcd594b33dc33748dc1baf46 commit: 42acb06b01b12a2205757a46d3ff75e38840968f [545/9127] drm: pahole struct drm_display_mode config: arm-randconfig-r026-20200717 (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 42acb06b01b12a2205757a46d3ff75e38840968f # 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 warnings (new ones prefixed by >>): drivers/gpu/drm/omapdrm/omap_connector.c: In function 'omap_connector_mode_valid': 92 | struct drm_display_mode new_mode = { { 0 } }; | ^~~~~~~~~~~~~~~~ drivers/gpu/drm/omapdrm/omap_connector.c:92:9: note: (near initialization for 'new_mode.clock') vim +92 drivers/gpu/drm/omapdrm/omap_connector.c d68164fe296422 drivers/gpu/drm/omapdrm/omap_connector.c Laurent Pinchart 2018-09-21 87 d68164fe296422 drivers/gpu/drm/omapdrm/omap_connector.c Laurent Pinchart 2018-09-21 88 static enum drm_mode_status omap_connector_mode_valid(struct drm_connector *connector, d68164fe296422 drivers/gpu/drm/omapdrm/omap_connector.c Laurent Pinchart 2018-09-21 89 struct drm_display_mode *mode) d68164fe296422 drivers/gpu/drm/omapdrm/omap_connector.c Laurent Pinchart 2018-09-21 90 { d68164fe296422 drivers/gpu/drm/omapdrm/omap_connector.c Laurent Pinchart 2018-09-21 91 struct omap_connector *omap_connector = to_omap_connector(connector); d68164fe296422 drivers/gpu/drm/omapdrm/omap_connector.c Laurent Pinchart 2018-09-21 @92 struct drm_display_mode new_mode = { { 0 } }; d68164fe296422 drivers/gpu/drm/omapdrm/omap_connector.c Laurent Pinchart 2018-09-21 93 enum drm_mode_status status; d68164fe296422 drivers/gpu/drm/omapdrm/omap_connector.c Laurent Pinchart 2018-09-21 94 d68164fe296422 drivers/gpu/drm/omapdrm/omap_connector.c Laurent Pinchart 2018-09-21 95 status = omap_connector_mode_fixup(omap_connector->output, mode, d68164fe296422 drivers/gpu/drm/omapdrm/omap_connector.c Laurent Pinchart 2018-09-21 96 &new_mode); d68164fe296422 drivers/gpu/drm/omapdrm/omap_connector.c Laurent Pinchart 2018-09-21 97 if (status != MODE_OK) d68164fe296422 drivers/gpu/drm/omapdrm/omap_connector.c Laurent Pinchart 2018-09-21 98 goto done; d68164fe296422 drivers/gpu/drm/omapdrm/omap_connector.c Laurent Pinchart 2018-09-21 99 d68164fe296422 drivers/gpu/drm/omapdrm/omap_connector.c Laurent Pinchart 2018-09-21 100 /* Check if vrefresh is still valid. */ d68164fe296422 drivers/gpu/drm/omapdrm/omap_connector.c Laurent Pinchart 2018-09-21 101 if (drm_mode_vrefresh(mode) != drm_mode_vrefresh(&new_mode)) d68164fe296422 drivers/gpu/drm/omapdrm/omap_connector.c Laurent Pinchart 2018-09-21 102 status = MODE_NOCLOCK; cd5351f4d2b1b8 drivers/staging/omapdrm/omap_connector.c Rob Clark 2011-11-12 103 28120302c2fdf2 drivers/gpu/drm/omapdrm/omap_connector.c Laurent Pinchart 2018-06-06 104 done: c39ff7ea780549 drivers/gpu/drm/omapdrm/omap_connector.c Shayenne Moura 2018-12-20 105 DBG("connector: mode %s: " DRM_MODE_FMT, d68164fe296422 drivers/gpu/drm/omapdrm/omap_connector.c Laurent Pinchart 2018-09-21 106 (status == MODE_OK) ? "valid" : "invalid", c39ff7ea780549 drivers/gpu/drm/omapdrm/omap_connector.c Shayenne Moura 2018-12-20 107 DRM_MODE_ARG(mode)); cd5351f4d2b1b8 drivers/staging/omapdrm/omap_connector.c Rob Clark 2011-11-12 108 d68164fe296422 drivers/gpu/drm/omapdrm/omap_connector.c Laurent Pinchart 2018-09-21 109 return status; cd5351f4d2b1b8 drivers/staging/omapdrm/omap_connector.c Rob Clark 2011-11-12 110 } cd5351f4d2b1b8 drivers/staging/omapdrm/omap_connector.c Rob Clark 2011-11-12 111 :::::: The code at line 92 was first introduced by commit :::::: d68164fe29642270ffba64ed64b0178ef7d916bf drm/omap: Factor out common mode validation code :::::: TO: Laurent Pinchart <laurent.pinchart(a)ideasonboard.com&gt; :::::: CC: Tomi Valkeinen <tomi.valkeinen(a)ti.com&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org