Hi Sandor, FYI, the error/warning still remains. tree: https://github.com/Freescale/linux-fslc pr/521 head: e1200a7e26459892adfac6cb313bd8458b21fa95 commit: a10ae796897faee61308958f1497c7948a2165d4 [6296/9999] LF-4229-1: drm: bridge: it6161: add enable gpio config: m68k-allmodconfig (https://download.01.org/0day-ci/archive/20220116/202201160411.Ft6GbgO5-lk...) compiler: m68k-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/a10ae796897faee61308958f14... git remote add freescale-fslc https://github.com/Freescale/linux-fslc git fetch --no-tags freescale-fslc pr/521 git checkout a10ae796897faee61308958f1497c7948a2165d4 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=m68k SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): In file included from include/linux/ioport.h:13, from include/linux/acpi.h:12, from include/linux/i2c.h:13, from include/drm/drm_crtc.h:28, from include/drm/drm_atomic_helper.h:31, from drivers/gpu/drm/bridge/it6161.c:5: include/linux/scatterlist.h: In function 'sg_set_buf': arch/m68k/include/asm/page_mm.h:169:50: warning: ordered comparison of pointer with null pointer [-Wextra] 169 | #define virt_addr_valid(kaddr) ((void *)(kaddr) >= (void *)PAGE_OFFSET && (void *)(kaddr) < high_memory) | ^~ include/linux/compiler.h:78:45: note: in definition of macro 'unlikely' 78 | # define unlikely(x) __builtin_expect(!!(x), 0) | ^ include/linux/scatterlist.h:143:9: note: in expansion of macro 'BUG_ON' 143 | BUG_ON(!virt_addr_valid(buf)); | ^~~~~~ include/linux/scatterlist.h:143:17: note: in expansion of macro 'virt_addr_valid' 143 | BUG_ON(!virt_addr_valid(buf)); | ^~~~~~~~~~~~~~~ drivers/gpu/drm/bridge/it6161.c: In function 'it6161_hdmi_tx_abort_ddc': drivers/gpu/drm/bridge/it6161.c:841:22: warning: variable 'ddc_master' set but not used [-Wunused-but-set-variable] 841 | u8 sw_reset, ddc_master, retry = 2; | ^~~~~~~~~~ drivers/gpu/drm/bridge/it6161.c: At top level: drivers/gpu/drm/bridge/it6161.c:1372:5: warning: no previous prototype for 'hdmi_tx_calc_pclk' [-Wmissing-prototypes] 1372 | u32 hdmi_tx_calc_pclk(struct it6161 *it6161) | ^~~~~~~~~~~~~~~~~ drivers/gpu/drm/bridge/it6161.c: In function 'hdmi_tx_get_display_mode': drivers/gpu/drm/bridge/it6161.c:1429:33: warning: variable 'display_mode' set but not used [-Wunused-but-set-variable] 1429 | struct drm_display_mode display_mode; | ^~~~~~~~~~~~ drivers/gpu/drm/bridge/it6161.c: In function 'setHDMITX_NLPCMAudio': drivers/gpu/drm/bridge/it6161.c:1833:25: warning: variable 'AudioFormat' set but not used [-Wunused-but-set-variable] 1833 | u8 AudioEnable, AudioFormat; | ^~~~~~~~~~~ drivers/gpu/drm/bridge/it6161.c: In function 'mipi_rx_prec_get_display_mode': drivers/gpu/drm/bridge/it6161.c:2361:39: warning: variable 'p_vback_porch' set but not used [-Wunused-but-set-variable] 2361 | int p_vfront_porch, p_vsyncw, p_vback_porch, p_vactive, p_vtotal; | ^~~~~~~~~~~~~ drivers/gpu/drm/bridge/it6161.c:2360:39: warning: variable 'p_hback_porch' set but not used [-Wunused-but-set-variable] 2360 | int p_hfront_porch, p_hsyncw, p_hback_porch, p_hactive, p_htotal; | ^~~~~~~~~~~~~ drivers/gpu/drm/bridge/it6161.c: In function 'it6161_i2c_probe': 2798 | it6161->enable_gpio = devm_gpiod_get_optional(dev, "enable", GPIOD_OUT_LOW); | ^~~~~~~~~~~~~~~~~~~~~~~ | devm_regulator_get_optional 2798 | it6161->enable_gpio = devm_gpiod_get_optional(dev, "enable", GPIOD_OUT_LOW); | ^~~~~~~~~~~~~ drivers/gpu/drm/bridge/it6161.c:2798:70: note: each undeclared identifier is reported only once for each function it appears in 2802 | gpiod_set_value_cansleep(it6161->enable_gpio, 1); | ^~~~~~~~~~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors Kconfig warnings: (for reference only) WARNING: unmet direct dependencies detected for NEED_MULTIPLE_NODES Depends on DISCONTIGMEM || NUMA Selected by - SINGLE_MEMORY_CHUNK && MMU vim +2798 drivers/gpu/drm/bridge/it6161.c 2753 2754 static int it6161_i2c_probe(struct i2c_client *i2c_mipi_rx, 2755 const struct i2c_device_id *id) 2756 { 2757 struct device *dev = &i2c_mipi_rx->dev; 2758 int err, intp_irq; 2759 2760 it6161 = devm_kzalloc(dev, sizeof(*it6161), GFP_KERNEL); 2761 if (!it6161) 2762 return -ENOMEM; 2763 2764 it6161->i2c_mipi_rx = i2c_mipi_rx; 2765 mutex_init(&it6161->mode_lock); 2766 2767 it6161->bridge.of_node = i2c_mipi_rx->dev.of_node; 2768 2769 it6161_parse_dt(it6161, dev->of_node); 2770 it6161->regmap_mipi_rx = devm_regmap_init_i2c(i2c_mipi_rx, &it6161_mipi_rx_bridge_regmap_config); 2771 if (IS_ERR(it6161->regmap_mipi_rx)) { 2772 DRM_DEV_ERROR(dev, "regmap_mipi_rx i2c init failed"); 2773 return PTR_ERR(it6161->regmap_mipi_rx); 2774 } 2775 2776 if (device_property_read_u32(dev, "it6161-addr-hdmi-tx", &it6161->it6161_addr_hdmi_tx) < 0) 2777 it6161->it6161_addr_hdmi_tx = 0x4C; 2778 it6161->i2c_hdmi_tx = i2c_new_dummy_device(i2c_mipi_rx->adapter, it6161->it6161_addr_hdmi_tx); 2779 it6161->regmap_hdmi_tx = devm_regmap_init_i2c(it6161->i2c_hdmi_tx, &it6161_hdmi_tx_bridge_regmap_config); 2780 if (IS_ERR(it6161->regmap_hdmi_tx)) { 2781 DRM_DEV_ERROR(dev, "regmap_hdmi_tx i2c init failed"); 2782 return PTR_ERR(it6161->regmap_mipi_rx); 2783 } 2784 2785 if (device_property_read_u32(dev, "it6161-addr-cec", &it6161->it6161_addr_cec) < 0) 2786 it6161->it6161_addr_cec = 0x4E; 2787 it6161->i2c_cec = i2c_new_dummy_device(i2c_mipi_rx->adapter, it6161->it6161_addr_cec); 2788 it6161->regmap_cec = devm_regmap_init_i2c(it6161->i2c_cec, &it6161_cec_bridge_regmap_config); 2789 if (IS_ERR(it6161->regmap_cec)) { 2790 DRM_DEV_ERROR(dev, "regmap_cec i2c init failed"); 2791 return PTR_ERR(it6161->regmap_cec); 2792 } 2793 2794 if (!it6161_check_device_ready(it6161)) 2795 return -ENODEV; 2796 2797 /* The enable GPIO is optional. */ 2799 if (IS_ERR(it6161->enable_gpio)) 2800 DRM_DEV_INFO(dev, "No enable GPIO"); 2801 else 2803 2804 it6161->enable_drv_hold = DEFAULT_DRV_HOLD; 2805 it6161_set_interrupts_active_level(HIGH); 2806 2807 intp_irq = i2c_mipi_rx->irq; 2808 2809 if (!intp_irq) { 2810 DRM_DEV_ERROR(dev, "it6112 failed to get INTP IRQ"); 2811 return -ENODEV; 2812 } 2813 2814 err = devm_request_threaded_irq(&i2c_mipi_rx->dev, intp_irq, NULL, 2815 it6161_intp_threaded_handler, 2816 IRQF_TRIGGER_HIGH | IRQF_ONESHOT, "it6161-intp", it6161); 2817 if (err) { 2818 DRM_DEV_ERROR(dev, "it6112 failed to request INTP threaded IRQ: %d", err); 2819 return err; 2820 } 2821 2822 i2c_set_clientdata(i2c_mipi_rx, it6161); 2823 it6161->bridge.funcs = &it6161_bridge_funcs; 2824 it6161->bridge.of_node = i2c_mipi_rx->dev.of_node; 2825 it6161->bridge.ops = DRM_BRIDGE_OP_DETECT | DRM_BRIDGE_OP_EDID | 2826 DRM_BRIDGE_OP_HPD | DRM_BRIDGE_OP_MODES; 2827 it6161->bridge.type = DRM_MODE_CONNECTOR_HDMIA; 2828 2829 drm_bridge_add(&it6161->bridge); 2830 2831 err = sysfs_create_files(&i2c_mipi_rx->dev.kobj, it6161_attrs); 2832 if (err) 2833 return err; 2834 2835 return 0; 2836 } 2837 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org