Hi Kuogee, Thank you for the patch! Yet something to improve: [auto build test ERROR on drm/drm-next] [also build test ERROR on next-20220526] [cannot apply to v5.18] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/intel-lab-lkp/linux/commits/Kuogee-Hsieh/drm-msm-dp-force-link-training-for-display-resolution-change/20220527-071202 base: git://anongit.freedesktop.org/drm/drm drm-next config: sparc-allmodconfig (https://download.01.org/0day-ci/archive/20220527/202205271424.ApfrMbAm-lkp@xxxxxxxxx/config) compiler: sparc64-linux-gcc (GCC) 11.3.0 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/intel-lab-lkp/linux/commit/42816831cad7ced23cdedbb77ef2ebf13247c623 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Kuogee-Hsieh/drm-msm-dp-force-link-training-for-display-resolution-change/20220527-071202 git checkout 42816831cad7ced23cdedbb77ef2ebf13247c623 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross W=1 O=build_dir ARCH=sparc SHELL=/bin/bash drivers/gpu/drm/msm/ If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): drivers/gpu/drm/msm/dp/dp_ctrl.c: In function 'dp_ctrl_on_stream': >> drivers/gpu/drm/msm/dp/dp_ctrl.c:1852:13: error: 'force_link_tarin' undeclared (first use in this function); did you mean 'force_link_train'? 1852 | if (force_link_tarin || !dp_ctrl_channel_eq_ok(ctrl)) | ^~~~~~~~~~~~~~~~ | force_link_train drivers/gpu/drm/msm/dp/dp_ctrl.c:1852:13: note: each undeclared identifier is reported only once for each function it appears in vim +1852 drivers/gpu/drm/msm/dp/dp_ctrl.c 1810 1811 int dp_ctrl_on_stream(struct dp_ctrl *dp_ctrl, bool force_link_train) 1812 { 1813 int ret = 0; 1814 bool mainlink_ready = false; 1815 struct dp_ctrl_private *ctrl; 1816 unsigned long pixel_rate_orig; 1817 1818 if (!dp_ctrl) 1819 return -EINVAL; 1820 1821 ctrl = container_of(dp_ctrl, struct dp_ctrl_private, dp_ctrl); 1822 1823 ctrl->dp_ctrl.pixel_rate = ctrl->panel->dp_mode.drm_mode.clock; 1824 1825 pixel_rate_orig = ctrl->dp_ctrl.pixel_rate; 1826 if (dp_ctrl->wide_bus_en) 1827 ctrl->dp_ctrl.pixel_rate >>= 1; 1828 1829 drm_dbg_dp(ctrl->drm_dev, "rate=%d, num_lanes=%d, pixel_rate=%d\n", 1830 ctrl->link->link_params.rate, 1831 ctrl->link->link_params.num_lanes, ctrl->dp_ctrl.pixel_rate); 1832 1833 if (!dp_power_clk_status(ctrl->power, DP_CTRL_PM)) { /* link clk is off */ 1834 ret = dp_ctrl_enable_mainlink_clocks(ctrl); 1835 if (ret) { 1836 DRM_ERROR("Failed to start link clocks. ret=%d\n", ret); 1837 goto end; 1838 } 1839 } 1840 1841 ret = dp_ctrl_enable_stream_clocks(ctrl); 1842 if (ret) { 1843 DRM_ERROR("Failed to start pixel clocks. ret=%d\n", ret); 1844 goto end; 1845 } 1846 1847 if (ctrl->link->sink_request & DP_TEST_LINK_PHY_TEST_PATTERN) { 1848 dp_ctrl_send_phy_test_pattern(ctrl); 1849 return 0; 1850 } 1851 > 1852 if (force_link_tarin || !dp_ctrl_channel_eq_ok(ctrl)) 1853 dp_ctrl_link_retrain(ctrl); 1854 1855 /* stop txing train pattern to end link training */ 1856 dp_ctrl_clear_training_pattern(ctrl); 1857 1858 /* 1859 * Set up transfer unit values and set controller state to send 1860 * video. 1861 */ 1862 reinit_completion(&ctrl->video_comp); 1863 1864 dp_ctrl_configure_source_params(ctrl); 1865 1866 dp_catalog_ctrl_config_msa(ctrl->catalog, 1867 ctrl->link->link_params.rate, 1868 pixel_rate_orig, dp_ctrl_use_fixed_nvid(ctrl)); 1869 1870 dp_ctrl_setup_tr_unit(ctrl); 1871 1872 dp_catalog_ctrl_state_ctrl(ctrl->catalog, DP_STATE_CTRL_SEND_VIDEO); 1873 1874 ret = dp_ctrl_wait4video_ready(ctrl); 1875 if (ret) 1876 return ret; 1877 1878 mainlink_ready = dp_catalog_ctrl_mainlink_ready(ctrl->catalog); 1879 drm_dbg_dp(ctrl->drm_dev, 1880 "mainlink %s\n", mainlink_ready ? "READY" : "NOT READY"); 1881 1882 end: 1883 return ret; 1884 } 1885 -- 0-DAY CI Kernel Test Service https://01.org/lkp
