tree: git://anongit.freedesktop.org/drm/drm-misc drm-misc-next head: b26975593b17c2c7188b96dba6fe9fff14480538 commit: b26975593b17c2c7188b96dba6fe9fff14480538 [2/2] display/drm/bridge: TC358775 DSI/LVDS driver config: i386-randconfig-m021-20200816 (attached as .config) compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; smatch warnings: drivers/gpu/drm/bridge/tc358775.c:687 tc_probe() warn: passing zero to 'PTR_ERR' vim +/PTR_ERR +687 drivers/gpu/drm/bridge/tc358775.c 648 649 static int tc_probe(struct i2c_client *client, const struct i2c_device_id *id) 650 { 651 struct device *dev = &client->dev; 652 struct drm_panel *panel; 653 struct tc_data *tc; 654 int ret; 655 656 tc = devm_kzalloc(dev, sizeof(*tc), GFP_KERNEL); 657 if (!tc) 658 return -ENOMEM; 659 660 tc->dev = dev; 661 tc->i2c = client; 662 663 ret = drm_of_find_panel_or_bridge(dev->of_node, TC358775_LVDS_OUT0, 664 0, &panel, NULL); 665 if (ret < 0) 666 return ret; 667 if (!panel) 668 return -ENODEV; 669 670 tc->panel_bridge = devm_drm_panel_bridge_add(dev, panel); 671 if (IS_ERR(tc->panel_bridge)) 672 return PTR_ERR(tc->panel_bridge); 673 674 ret = tc358775_parse_dt(dev->of_node, tc); 675 if (ret) 676 return ret; 677 678 tc->vddio = devm_regulator_get(dev, "vddio-supply"); 679 if (IS_ERR(tc->vddio)) { 680 ret = PTR_ERR(tc->vddio); 681 dev_err(dev, "vddio-supply not found\n"); 682 return ret; 683 } 684 685 tc->vdd = devm_regulator_get(dev, "vdd-supply"); 686 if (IS_ERR(tc->vdd)) { 688 dev_err(dev, "vdd-supply not found\n"); 689 return ret; 690 } 691 692 tc->stby_gpio = devm_gpiod_get(dev, "stby", GPIOD_OUT_HIGH); 693 if (IS_ERR(tc->stby_gpio)) { 694 ret = PTR_ERR(tc->stby_gpio); 695 dev_err(dev, "cannot get stby-gpio %d\n", ret); 696 return ret; 697 } 698 699 tc->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH); 700 if (IS_ERR(tc->reset_gpio)) { 701 ret = PTR_ERR(tc->reset_gpio); 702 dev_err(dev, "cannot get reset-gpios %d\n", ret); 703 return ret; 704 } 705 706 tc->bridge.funcs = &tc_bridge_funcs; 707 tc->bridge.of_node = dev->of_node; 708 drm_bridge_add(&tc->bridge); 709 710 i2c_set_clientdata(client, tc); 711 712 return 0; 713 } 714 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org