tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 17cb8a20bde66a520a2ca7aad1063e1ce7382240 commit: c5d296bad640b190c52ef7508114d70e971a4bba [3871/8213] usb: typec: nb7vpq904m: switch to DRM_AUX_BRIDGE config: x86_64-randconfig-161-20231218 (https://download.01.org/0day-ci/archive/20231218/202312181205.Yx4PmXXe-lkp@xxxxxxxxx/config) compiler: gcc-12 (Debian 12.2.0-14) 12.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231218/202312181205.Yx4PmXXe-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202312181205.Yx4PmXXe-lkp@xxxxxxxxx/ Note: the linux-next/master HEAD 17cb8a20bde66a520a2ca7aad1063e1ce7382240 builds fine. It may have been fixed somewhere. All errors (new ones prefixed by >>): ld: drivers/gpu/drm/bridge/aux-bridge.o: in function `drm_aux_bridge_register': >> drivers/gpu/drm/bridge/aux-bridge.c:63: undefined reference to `auxiliary_device_init' >> ld: drivers/gpu/drm/bridge/aux-bridge.c:70: undefined reference to `__auxiliary_device_add' ld: drivers/gpu/drm/bridge/aux-bridge.o: in function `drm_aux_bridge_drv_init': >> drivers/gpu/drm/bridge/aux-bridge.c:136: undefined reference to `__auxiliary_driver_register' ld: drivers/gpu/drm/bridge/aux-bridge.o: in function `drm_aux_bridge_drv_exit': >> drivers/gpu/drm/bridge/aux-bridge.c:136: undefined reference to `auxiliary_driver_unregister' Kconfig warnings: (for reference only) WARNING: unmet direct dependencies detected for DRM_AUX_BRIDGE Depends on [n]: HAS_IOMEM [=y] && DRM_BRIDGE [=y] && OF [=n] Selected by [y]: - TYPEC_MUX_NB7VPQ904M [=y] && USB_SUPPORT [=y] && TYPEC [=y] && I2C [=y] && (DRM [=y] || DRM [=y]=n) && DRM_BRIDGE [=y] vim +63 drivers/gpu/drm/bridge/aux-bridge.c 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 31 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 32 /** 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 33 * drm_aux_bridge_register - Create a simple bridge device to link the chain 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 34 * @parent: device instance providing this bridge 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 35 * 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 36 * Creates a simple DRM bridge that doesn't implement any drm_bridge 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 37 * operations. Such bridges merely fill a place in the bridge chain linking 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 38 * surrounding DRM bridges. 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 39 * 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 40 * Return: zero on success, negative error code on failure 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 41 */ 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 42 int drm_aux_bridge_register(struct device *parent) 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 43 { 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 44 struct auxiliary_device *adev; 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 45 int ret; 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 46 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 47 adev = kzalloc(sizeof(*adev), GFP_KERNEL); 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 48 if (!adev) 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 49 return -ENOMEM; 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 50 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 51 ret = ida_alloc(&drm_aux_bridge_ida, GFP_KERNEL); 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 52 if (ret < 0) { 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 53 kfree(adev); 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 54 return ret; 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 55 } 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 56 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 57 adev->id = ret; 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 58 adev->name = "aux_bridge"; 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 59 adev->dev.parent = parent; 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 60 adev->dev.of_node = parent->of_node; 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 61 adev->dev.release = drm_aux_bridge_release; 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 62 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 @63 ret = auxiliary_device_init(adev); 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 64 if (ret) { 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 65 ida_free(&drm_aux_bridge_ida, adev->id); 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 66 kfree(adev); 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 67 return ret; 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 68 } 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 69 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 @70 ret = auxiliary_device_add(adev); 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 71 if (ret) { 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 72 auxiliary_device_uninit(adev); 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 73 return ret; 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 74 } 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 75 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 76 return devm_add_action_or_reset(parent, drm_aux_bridge_unregister_adev, adev); 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 77 } 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 78 EXPORT_SYMBOL_GPL(drm_aux_bridge_register); 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 79 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 80 struct drm_aux_bridge_data { 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 81 struct drm_bridge bridge; 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 82 struct drm_bridge *next_bridge; 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 83 struct device *dev; 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 84 }; 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 85 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 86 static int drm_aux_bridge_attach(struct drm_bridge *bridge, 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 87 enum drm_bridge_attach_flags flags) 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 88 { 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 89 struct drm_aux_bridge_data *data; 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 90 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 91 if (!(flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)) 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 92 return -EINVAL; 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 93 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 94 data = container_of(bridge, struct drm_aux_bridge_data, bridge); 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 95 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 96 return drm_bridge_attach(bridge->encoder, data->next_bridge, bridge, 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 97 DRM_BRIDGE_ATTACH_NO_CONNECTOR); 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 98 } 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 99 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 100 static const struct drm_bridge_funcs drm_aux_bridge_funcs = { 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 101 .attach = drm_aux_bridge_attach, 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 102 }; 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 103 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 104 static int drm_aux_bridge_probe(struct auxiliary_device *auxdev, 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 105 const struct auxiliary_device_id *id) 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 106 { 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 107 struct drm_aux_bridge_data *data; 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 108 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 109 data = devm_kzalloc(&auxdev->dev, sizeof(*data), GFP_KERNEL); 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 110 if (!data) 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 111 return -ENOMEM; 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 112 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 113 data->dev = &auxdev->dev; 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 114 data->next_bridge = devm_drm_of_get_bridge(&auxdev->dev, auxdev->dev.of_node, 0, 0); 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 115 if (IS_ERR(data->next_bridge)) 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 116 return dev_err_probe(&auxdev->dev, PTR_ERR(data->next_bridge), 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 117 "failed to acquire drm_bridge\n"); 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 118 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 119 data->bridge.funcs = &drm_aux_bridge_funcs; 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 120 data->bridge.of_node = data->dev->of_node; 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 121 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 122 return devm_drm_bridge_add(data->dev, &data->bridge); 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 123 } 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 124 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 125 static const struct auxiliary_device_id drm_aux_bridge_table[] = { 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 126 { .name = KBUILD_MODNAME ".aux_bridge" }, 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 127 {}, 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 128 }; 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 129 MODULE_DEVICE_TABLE(auxiliary, drm_aux_bridge_table); 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 130 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 131 static struct auxiliary_driver drm_aux_bridge_drv = { 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 132 .name = "aux_bridge", 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 133 .id_table = drm_aux_bridge_table, 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 134 .probe = drm_aux_bridge_probe, 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 135 }; 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 @136 module_auxiliary_driver(drm_aux_bridge_drv); 2a04739139b2b2 Dmitry Baryshkov 2023-12-03 137 :::::: The code at line 63 was first introduced by commit :::::: 2a04739139b2b2761571e18937e2400e71eff664 drm/bridge: add transparent bridge helper :::::: TO: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx> :::::: CC: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx> -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
