Hi Sandor, FYI, the error/warning still remains. tree: https://github.com/Freescale/linux-fslc 5.10-2.1.x-imx head: 3b81a70be1099d44fdafaa6766bf75a2bd9e297e commit: 917ccba3733c36d1d777cf58bf44081c4148fcb8 [5943/15242] LF-3322: drm: cdns_mhdp: change HDMI hotplug debounce time to 50ms config: sparc-allyesconfig (attached as .config) compiler: sparc64-linux-gcc (GCC) 11.2.0 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/Freescale/linux-fslc/commit/917ccba3733c36d1d777cf58bf... git remote add freescale-fslc https://github.com/Freescale/linux-fslc git fetch --no-tags freescale-fslc 5.10-2.1.x-imx git checkout 917ccba3733c36d1d777cf58bf44081c4148fcb8 # save the attached .config to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=sparc SHELL=/bin/bash drivers/net/ drivers/pwm/ drivers/soc/imx/ drivers/staging/fsl_qbman/ drivers/staging/media/imx/ drivers/usb/chipidea/ drivers/video/fbdev/mxc/ 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/staging/media/imx/hdmirx/cdns-hdmirx.c: In function 'tmdsmon_fn': drivers/staging/media/imx/hdmirx/cdns-hdmirx.c:907:58: warning: variable 'events' set but not used [-Wunused-but-set-variable] 907 | uint32_t events; | ^~~~~~ drivers/staging/media/imx/hdmirx/cdns-hdmirx.c: At top level: 1149 | #define HOTPLUG_DEBOUNCE_MS 200 | In file included from drivers/staging/media/imx/hdmirx/cdns-mhdp-hdmirx.h:32, from drivers/staging/media/imx/hdmirx/cdns-hdmirx-phy.h:15, from drivers/staging/media/imx/hdmirx/cdns-hdmirx.c:16: include/drm/bridge/cdns-mhdp.h:526: note: this is the location of the previous definition 526 | #define HOTPLUG_DEBOUNCE_MS 50 | vim +/HOTPLUG_DEBOUNCE_MS +1149 drivers/staging/media/imx/hdmirx/cdns-hdmirx.c d65a484d43ff3b Sandor Yu 2020-12-09 1148 d65a484d43ff3b Sandor Yu 2020-12-09 @1149 #define HOTPLUG_DEBOUNCE_MS 200 d65a484d43ff3b Sandor Yu 2020-12-09 1150 static irqreturn_t hdp5v_irq_thread(int irq, void *data) d65a484d43ff3b Sandor Yu 2020-12-09 1151 { d65a484d43ff3b Sandor Yu 2020-12-09 1152 struct cdns_hdmirx_device *hdmirx = data; d65a484d43ff3b Sandor Yu 2020-12-09 1153 d65a484d43ff3b Sandor Yu 2020-12-09 1154 dev_dbg(&hdmirx->pdev->dev, "%s hello\n", __func__); d65a484d43ff3b Sandor Yu 2020-12-09 1155 d65a484d43ff3b Sandor Yu 2020-12-09 1156 disable_irq_nosync(irq); d65a484d43ff3b Sandor Yu 2020-12-09 1157 d65a484d43ff3b Sandor Yu 2020-12-09 1158 mod_delayed_work(system_wq, &hdmirx->hpd5v_work, d65a484d43ff3b Sandor Yu 2020-12-09 1159 msecs_to_jiffies(HOTPLUG_DEBOUNCE_MS)); d65a484d43ff3b Sandor Yu 2020-12-09 1160 d65a484d43ff3b Sandor Yu 2020-12-09 1161 return IRQ_HANDLED; d65a484d43ff3b Sandor Yu 2020-12-09 1162 } d65a484d43ff3b Sandor Yu 2020-12-09 1163 :::::: The code at line 1149 was first introduced by commit :::::: d65a484d43ff3b50f62e6b7197421548f0630f83 MLK-24081-06: staging: media: imx: Add hdmi rx driver :::::: TO: Sandor Yu <Sandor.yu(a)nxp.com&gt; :::::: CC: Sandor Yu <Sandor.yu(a)nxp.com&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org