tree: https://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb.git testing/next head: 3c9722514c3fb74bbe0af87c20bc6b4c47121287 commit: a0f0bc95705446b8b1476338056bf869271ba36a [32/38] usb: dwc2: override PHY input signals with usb role switch support config: i386-randconfig-a014-20200914 (attached as .config) compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 reproduce (this is a W=1 build): git checkout a0f0bc95705446b8b1476338056bf869271ba36a # save the attached .config to linux build tree make W=1 ARCH=i386 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 >>): ld: drivers/usb/dwc2/drd.o: in function `dwc2_drd_role_sw_set': >> drivers/usb/dwc2/drd.c:71: undefined reference to `usb_role_switch_get_drvdata' ld: drivers/usb/dwc2/drd.o: in function `dwc2_drd_init': >> drivers/usb/dwc2/drd.c:134: undefined reference to `usb_role_switch_register' ld: drivers/usb/dwc2/drd.o: in function `dwc2_drd_exit': >> drivers/usb/dwc2/drd.c:179: undefined reference to `usb_role_switch_unregister' # https://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb.git/commit/?id=... git remote add balbi-usb https://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb.git git fetch --no-tags balbi-usb testing/next git checkout a0f0bc95705446b8b1476338056bf869271ba36a vim +71 drivers/usb/dwc2/drd.c 68 69 static int dwc2_drd_role_sw_set(struct usb_role_switch *sw, enum usb_role role) 70 { > 71 struct dwc2_hsotg *hsotg = usb_role_switch_get_drvdata(sw); 72 unsigned long flags; 73 int already = 0; 74 75 /* Skip session not in line with dr_mode */ 76 if ((role == USB_ROLE_DEVICE && hsotg->dr_mode == USB_DR_MODE_HOST) || 77 (role == USB_ROLE_HOST && hsotg->dr_mode == USB_DR_MODE_PERIPHERAL)) 78 return -EINVAL; 79 80 #if IS_ENABLED(CONFIG_USB_DWC2_PERIPHERAL) || \ 81 IS_ENABLED(CONFIG_USB_DWC2_DUAL_ROLE) 82 /* Skip session if core is in test mode */ 83 if (role == USB_ROLE_NONE && hsotg->test_mode) { 84 dev_dbg(hsotg->dev, "Core is in test mode\n"); 85 return -EBUSY; 86 } 87 #endif 88 89 spin_lock_irqsave(&hsotg->lock, flags); 90 91 if (role == USB_ROLE_HOST) { 92 already = dwc2_ovr_avalid(hsotg, true); 93 } else if (role == USB_ROLE_DEVICE) { 94 already = dwc2_ovr_bvalid(hsotg, true); 95 /* This clear DCTL.SFTDISCON bit */ 96 dwc2_hsotg_core_connect(hsotg); 97 } else { 98 if (dwc2_is_device_mode(hsotg)) { 99 if (!dwc2_ovr_bvalid(hsotg, false)) 100 /* This set DCTL.SFTDISCON bit */ 101 dwc2_hsotg_core_disconnect(hsotg); 102 } else { 103 dwc2_ovr_avalid(hsotg, false); 104 } 105 } 106 107 spin_unlock_irqrestore(&hsotg->lock, flags); 108 109 if (!already && hsotg->dr_mode == USB_DR_MODE_OTG) 110 /* This will raise a Connector ID Status Change Interrupt */ 111 dwc2_force_mode(hsotg, role == USB_ROLE_HOST); 112 113 dev_dbg(hsotg->dev, "%s-session valid\n", 114 role == USB_ROLE_NONE ? "No" : 115 role == USB_ROLE_HOST ? "A" : "B"); 116 117 return 0; 118 } 119 120 int dwc2_drd_init(struct dwc2_hsotg *hsotg) 121 { 122 struct usb_role_switch_desc role_sw_desc = {0}; 123 struct usb_role_switch *role_sw; 124 int ret; 125 126 if (!device_property_read_bool(hsotg->dev, "usb-role-switch")) 127 return 0; 128 129 role_sw_desc.driver_data = hsotg; 130 role_sw_desc.fwnode = dev_fwnode(hsotg->dev); 131 role_sw_desc.set = dwc2_drd_role_sw_set; 132 role_sw_desc.allow_userspace_control = true; 133 > 134 role_sw = usb_role_switch_register(hsotg->dev, &role_sw_desc); 135 if (IS_ERR(role_sw)) { 136 ret = PTR_ERR(role_sw); 137 dev_err(hsotg->dev, 138 "failed to register role switch: %d\n", ret); 139 return ret; 140 } 141 142 hsotg->role_sw = role_sw; 143 144 /* Enable override and initialize values */ 145 dwc2_ovr_init(hsotg); 146 147 return 0; 148 } 149 150 void dwc2_drd_suspend(struct dwc2_hsotg *hsotg) 151 { 152 u32 gintsts, gintmsk; 153 154 if (hsotg->role_sw && !hsotg->params.external_id_pin_ctl) { 155 gintmsk = dwc2_readl(hsotg, GINTMSK); 156 gintmsk &= ~GINTSTS_CONIDSTSCHNG; 157 dwc2_writel(hsotg, gintmsk, GINTMSK); 158 gintsts = dwc2_readl(hsotg, GINTSTS); 159 dwc2_writel(hsotg, gintsts | GINTSTS_CONIDSTSCHNG, GINTSTS); 160 } 161 } 162 163 void dwc2_drd_resume(struct dwc2_hsotg *hsotg) 164 { 165 u32 gintsts, gintmsk; 166 167 if (hsotg->role_sw && !hsotg->params.external_id_pin_ctl) { 168 gintsts = dwc2_readl(hsotg, GINTSTS); 169 dwc2_writel(hsotg, gintsts | GINTSTS_CONIDSTSCHNG, GINTSTS); 170 gintmsk = dwc2_readl(hsotg, GINTMSK); 171 gintmsk |= GINTSTS_CONIDSTSCHNG; 172 dwc2_writel(hsotg, gintmsk, GINTMSK); 173 } 174 } 175 176 void dwc2_drd_exit(struct dwc2_hsotg *hsotg) 177 { 178 if (hsotg->role_sw) > 179 usb_role_switch_unregister(hsotg->role_sw); --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org