change dcd_init() return from void to bool

src/device/dcd.h

@@ -108,7 +108,7 @@ void dcd_dcache_clean_invalidate(void const* addr, uint32_t data_size) TU_ATTR_W
 //--------------------------------------------------------------------+
 
 // Initialize controller to device mode
-void dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init);
+bool dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init);
 
 // Deinitialize controller, unset device mode.
 bool dcd_deinit(uint8_t rhport);

src/device/usbd.c

@@ -454,7 +454,7 @@ bool tud_rhport_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
   }
   TU_ASSERT(rh_init);
 
-  TU_LOG_USBD("USBD init on controller %u, speed = %s\r\n", rh_init->rhport,
+  TU_LOG_USBD("USBD init on controller %u, speed = %s\r\n", rhport,
     rh_init->speed == TUSB_SPEED_HIGH ? "High" : "Full");
   TU_LOG_INT(CFG_TUD_LOG_LEVEL, sizeof(usbd_device_t));
   TU_LOG_INT(CFG_TUD_LOG_LEVEL, sizeof(dcd_event_t));
@@ -490,15 +490,16 @@ bool tud_rhport_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
   _usbd_rhport = rhport;
 
   // Init device controller driver
-  dcd_init(rhport, rh_init);
+  TU_ASSERT(dcd_init(rhport, rh_init));
   dcd_int_enable(rhport);
 
   return true;
 }
 
 bool tud_deinit(uint8_t rhport) {
-  // skip if not initialized
-  if (!tud_inited()) return true;
+  if (!tud_inited()) {
+    return true; // skip if not initialized
+  }
 
   TU_LOG_USBD("USBD deinit on controller %u\r\n", rhport);
 

src/portable/bridgetek/ft9xx/dcd_ft9xx.c

@@ -517,7 +517,7 @@ static uint16_t _ft9xx_dusb_out(uint8_t ep_number, uint8_t *buffer, uint16_t len
  *------------------------------------------------------------------*/
 
 // Initialize controller to device mode
-void dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
+bool dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
   (void) rh_init;
   TU_LOG2("FT9xx initialisation\r\n");
 
@@ -526,6 +526,7 @@ void dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
   interrupt_attach(interrupt_usb_device, (int8_t)interrupt_usb_device, _ft9xx_usbd_ISR);
 
   dcd_connect(rhport);
+  return true;
 }
 
 // Enable device interrupt

src/portable/chipidea/ci_fs/dcd_ci_fs.c

@@ -267,7 +267,7 @@ static void process_bus_resume(uint8_t rhport)
 /*------------------------------------------------------------------*/
 /* Device API
  *------------------------------------------------------------------*/
-void dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
+bool dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
   (void) rhport;
   (void) rh_init;
 
@@ -296,6 +296,7 @@ void dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
 
   dcd_connect(rhport);
   // NVIC_ClearPendingIRQ(CIFS_IRQN);
+  return true;
 }
 
 void dcd_set_address(uint8_t rhport, uint8_t dev_addr)

src/portable/chipidea/ci_hs/dcd_ci_hs.c

@@ -234,13 +234,13 @@ static void bus_reset(uint8_t rhport)
   dcd_dcache_clean_invalidate(&_dcd_data, sizeof(dcd_data_t));
 }
 
-void dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
+bool dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
   (void) rh_init;
   tu_memclr(&_dcd_data, sizeof(dcd_data_t));
 
   ci_hs_regs_t* dcd_reg = CI_HS_REG(rhport);
 
-  TU_ASSERT(ci_ep_count(dcd_reg) <= TUP_DCD_ENDPOINT_MAX, );
+  TU_ASSERT(ci_ep_count(dcd_reg) <= TUP_DCD_ENDPOINT_MAX);
 
   // Reset controller
   dcd_reg->USBCMD |= USBCMD_RESET;
@@ -268,6 +268,8 @@ void dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
   usbcmd |= USBCMD_RUN_STOP; // run
 
   dcd_reg->USBCMD = usbcmd;
+
+  return true;
 }
 
 void dcd_int_enable(uint8_t rhport)

src/portable/dialog/da146xx/dcd_da146xx.c

@@ -804,15 +804,16 @@ static void handle_ep0_nak(void)
 /*------------------------------------------------------------------*/
 /* Controller API
  *------------------------------------------------------------------*/
-void dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
+bool dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
   (void) rhport;
   (void) rh_init;
 
   _dcd.init_called = true;
-  if (_dcd.vbus_present)
-  {
+  if (_dcd.vbus_present) {
     dcd_connect(rhport);
   }
+
+  return true;
 }
 
 void dcd_int_enable(uint8_t rhport)

src/portable/espressif/esp32sx/dcd_esp32sx.c

@@ -172,7 +172,7 @@ static void enum_done_processing(void)
 /*------------------------------------------------------------------*/
 /* Controller API
  *------------------------------------------------------------------*/
-void dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
+bool dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
   (void) rh_init;
   ESP_LOGV(TAG, "DCD init - Start");
 
@@ -211,6 +211,7 @@ void dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
                  USB_DISCONNINTMSK_M; // host most only
 
   dcd_connect(rhport);
+  return true;
 }
 
 void dcd_set_address(uint8_t rhport, uint8_t dev_addr)

src/portable/mentor/musb/dcd_musb.c

@@ -582,7 +582,7 @@ void print_musb_info(musb_regs_t* musb_regs) {
 }
 #endif
 
-void dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
+bool dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
   (void) rh_init;
   musb_regs_t* musb_regs = MUSB_REGS(rhport);
 
@@ -594,6 +594,7 @@ void dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
   musb_dcd_int_clear(rhport);
   musb_dcd_phy_init(rhport);
   dcd_connect(rhport);
+  return true;
 }
 
 void dcd_int_enable(uint8_t rhport) {

src/portable/microchip/pic/dcd_pic.c

@@ -470,7 +470,7 @@ static void process_bus_resume(uint8_t rhport)
 /*------------------------------------------------------------------*/
 /* Device API
  *------------------------------------------------------------------*/
-void dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
+bool dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
   (void) rh_init;
   intr_disable(rhport);
   intr_clear(rhport);
@@ -502,6 +502,7 @@ void dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
   U1IE = _U1IE_URSTIE_MASK;
 
   dcd_connect(rhport);
+  return true;
 }
 
 void dcd_int_enable(uint8_t rhport)

src/portable/microchip/pic32mz/dcd_pic32mz.c

@@ -120,7 +120,7 @@ static ep0_stage_t ep0_get_stage(void)
 /*------------------------------------------------------------------*/
 /* Controller API
  *------------------------------------------------------------------*/
-void dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
+bool dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
   (void) rh_init;
   // Disable endpoint interrupts for now
   USB_REGS->INTRRXEbits.w = 0;
@@ -129,6 +129,7 @@ void dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
   USB_REGS->INTRUSBEbits.w = 7;
 
   dcd_connect(rhport);
+  return true;
 }
 
 void dcd_int_enable(uint8_t rhport)

src/portable/microchip/samd/dcd_samd.c

@@ -78,8 +78,9 @@ static void bus_reset(void)
 /*------------------------------------------------------------------*/
 /* Controller API
  *------------------------------------------------------------------*/
-void dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
-  (void) rhport; (void) rh_init;
+bool dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
+  (void) rhport;
+  (void) rh_init;
 
   // Reset to get in a clean state.
   USB->DEVICE.CTRLA.bit.SWRST = true;
@@ -101,6 +102,8 @@ void dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
 
   USB->DEVICE.INTFLAG.reg |= USB->DEVICE.INTFLAG.reg; // clear pending
   USB->DEVICE.INTENSET.reg = /* USB_DEVICE_INTENSET_SOF | */ USB_DEVICE_INTENSET_EORST;
+
+  return true;
 }
 
 #if CFG_TUSB_MCU == OPT_MCU_SAMD51 || CFG_TUSB_MCU == OPT_MCU_SAME5X

src/portable/microchip/samg/dcd_samg.c

@@ -155,11 +155,13 @@ static void bus_reset(void)
 }
 
 // Initialize controller to device mode
-void dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
+bool dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
   (void) rhport;
   (void) rh_init;
+
   tu_memclr(_dcd_xfer, sizeof(_dcd_xfer));
   dcd_connect(rhport);
+  return true;
 }
 
 // Enable device interrupt

src/portable/microchip/samx7x/dcd_samx7x.c

@@ -104,9 +104,10 @@ TU_ATTR_ALWAYS_INLINE static inline void CleanInValidateCache(uint32_t *addr, in
 //------------------------------------------------------------------
 
 // Initialize controller to device mode
-void dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
+bool dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
   (void) rh_init;
   dcd_connect(rhport);
+  return true;
 }
 
 // Enable device interrupt

src/portable/mindmotion/mm32/dcd_mm32f327x_otg.c

@@ -245,7 +245,7 @@ static void process_bus_active(uint8_t rhport)
 /*------------------------------------------------------------------*/
 /* Device API
  *------------------------------------------------------------------*/
-void dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
+bool dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
   (void) rhport;
   (void) rh_init;
 
@@ -256,6 +256,7 @@ void dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
 
   dcd_connect(rhport);
   NVIC_ClearPendingIRQ(USB_FS_IRQn);
+  return true;
 }
 #define USB_DEVICE_INTERRUPT_PRIORITY (3U)
 void dcd_int_enable(uint8_t rhport)

src/portable/nordic/nrf5x/dcd_nrf5x.c

@@ -230,10 +230,11 @@ static void xact_in_dma(uint8_t epnum) {
 //--------------------------------------------------------------------+
 // Controller API
 //--------------------------------------------------------------------+
-void dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
+bool dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
   (void) rhport;
   (void) rh_init;
   TU_LOG2("dcd init\r\n");
+  return true;
 }
 
 void dcd_int_enable(uint8_t rhport) {

src/portable/nuvoton/nuc120/dcd_nuc120.c

@@ -201,7 +201,7 @@ static const uint32_t enabled_irqs = USBD_INTSTS_FLDET_STS_Msk | USBD_INTSTS_BUS
   NUC100/NUC120 TinyUSB API driver implementation
 */
 
-void dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
+bool dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
   (void) rhport;
   (void) rh_init;
 
@@ -215,6 +215,8 @@ void dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
 
   USBD->INTSTS = enabled_irqs;
   USBD->INTEN  = enabled_irqs;
+
+  return true;
 }
 
 void dcd_int_enable(uint8_t rhport)

src/portable/nuvoton/nuc121/dcd_nuc121.c

@@ -209,7 +209,7 @@ enum {
   NUC121/NUC125/NUC126 TinyUSB API driver implementation
 */
 
-void dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
+bool dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
   (void) rhport;
   (void) rh_init;
 
@@ -227,6 +227,8 @@ void dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
 
   USBD->INTSTS = ENABLED_IRQS;
   USBD->INTEN  = ENABLED_IRQS;
+
+  return true;
 }
 
 void dcd_int_enable(uint8_t rhport)

src/portable/nuvoton/nuc505/dcd_nuc505.c

@@ -279,7 +279,7 @@ static const uint32_t enabled_irqs = USBD_GINTEN_USBIEN_Msk | \
   NUC505 TinyUSB API driver implementation
 */
 
-void dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
+bool dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
   (void) rhport;
   (void) rh_init;
 
@@ -291,6 +291,8 @@ void dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
   bus_reset();
 
   usb_attach();
+
+  return true;
 }
 
 void dcd_int_enable(uint8_t rhport)

src/portable/nxp/khci/dcd_khci.c

@@ -265,7 +265,7 @@ static void process_bus_resume(uint8_t rhport)
 /*------------------------------------------------------------------*/
 /* Device API
  *------------------------------------------------------------------*/
-void dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
+bool dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
   (void) rhport;
   (void) rh_init;
 
@@ -294,6 +294,8 @@ void dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
 
   dcd_connect(rhport);
   NVIC_ClearPendingIRQ(USB0_IRQn);
+
+  return true;
 }
 
 void dcd_int_enable(uint8_t rhport)

src/portable/nxp/lpc17_40/dcd_lpc17_40.c

@@ -167,7 +167,7 @@ static void bus_reset(void)
   tu_memclr(&_dcd, sizeof(dcd_data_t));
 }
 
-void dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
+bool dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
   (void) rhport;
   (void) rh_init;
 
@@ -186,6 +186,8 @@ void dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
 
   // Clear pending IRQ
   NVIC_ClearPendingIRQ(USB_IRQn);
+
+  return true;
 }
 
 void dcd_int_enable(uint8_t rhport)

src/portable/nxp/lpc_ip3511/dcd_lpc_ip3511.c

@@ -289,7 +289,7 @@ static void edpt_reset_all(uint8_t rhport)
   }
   prepare_setup_packet(rhport);
 }
-void dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
+bool dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
   (void) rh_init;
   edpt_reset_all(rhport);
 
@@ -303,6 +303,8 @@ void dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
                            DEVCMDSTAT_RESET_CHANGE_MASK | DEVCMDSTAT_CONNECT_CHANGE_MASK | DEVCMDSTAT_SUSPEND_CHANGE_MASK;
 
   NVIC_ClearPendingIRQ(_dcd_controller[rhport].irqnum);
+
+  return true;
 }
 
 void dcd_int_enable(uint8_t rhport)

src/portable/raspberrypi/pio_usb/dcd_pio_usb.c

@@ -50,11 +50,13 @@ static usb_descriptor_buffers_t desc;
  *------------------------------------------------------------------*/
 
 // Initialize controller to device mode
-void dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
+bool dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
   (void) rhport;
   (void) rh_init;
   static pio_usb_configuration_t config = PIO_USB_DEFAULT_CONFIG;
   usb_device = pio_usb_device_init(&config, &desc);
+
+  return true;
 }
 
 // Enable device interrupt

src/portable/raspberrypi/rp2040/dcd_rp2040.c

@@ -369,7 +369,7 @@ static void __tusb_irq_path_func(dcd_rp2040_irq)(void) {
 #define PICO_SHARED_IRQ_HANDLER_HIGHEST_ORDER_PRIORITY 0xff
 #endif
 
-void dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
+bool dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
   (void) rh_init;
   assert(rhport == 0);
 
@@ -406,6 +406,7 @@ void dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
                  (FORCE_VBUS_DETECT ? 0 : USB_INTS_DEV_CONN_DIS_BITS);
 
   dcd_connect(rhport);
+  return true;
 }
 
 bool dcd_deinit(uint8_t rhport) {

src/portable/renesas/rusb2/dcd_rusb2.c

@@ -657,14 +657,14 @@ static void enable_interrupt(uint32_t pswi)
 }
 #endif
 
-void dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
+bool dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
   (void) rh_init;
   rusb2_reg_t* rusb = RUSB2_REG(rhport);
   rusb2_module_start(rhport, true);
 
-// We disable SOF for now until needed later on.
-// Since TinyUSB doesn't use SOF for now, and this interrupt often (1ms interval)
-_dcd.sof_enabled = false;
+  // We disable SOF for now until needed later on.
+  // Since TinyUSB doesn't use SOF for now, and this interrupt often (1ms interval)
+  _dcd.sof_enabled = false;
 
 #ifdef RUSB2_SUPPORT_HIGHSPEED
   if ( rusb2_is_highspeed_rhport(rhport) ) {
@@ -719,6 +719,8 @@ _dcd.sof_enabled = false;
   if (rusb->INTSTS0_b.VBSTS) {
     dcd_connect(rhport);
   }
+
+  return true;
 }
 
 void dcd_int_enable(uint8_t rhport) {

src/portable/sony/cxd56/dcd_cxd56.c

@@ -201,7 +201,7 @@ static void _dcd_resume(FAR struct usbdevclass_driver_s *driver, FAR struct usbd
   dcd_event_bus_signal(0, DCD_EVENT_RESUME, true);
 }
 
-void dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
+bool dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
   (void) rhport;
   (void) rh_init;
 
@@ -211,6 +211,8 @@ void dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
   usbdcd_driver.setup_queue = osal_queue_create(&_setup_queue_def);
 
   usbdev_register(&usbdcd_driver.usbdevclass_driver);
+
+  return true;
 }
 
 // Enable device interrupt

src/portable/st/stm32_fsdev/dcd_stm32_fsdev.c

@@ -184,7 +184,7 @@ TU_ATTR_ALWAYS_INLINE static inline xfer_ctl_t *xfer_ctl_ptr(uint8_t epnum, uint
 //--------------------------------------------------------------------+
 // Controller API
 //--------------------------------------------------------------------+
-void dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
+bool dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
   (void) rh_init;
   // Follow the RM mentions to use a special ordering of PDWN and FRES
   for (volatile uint32_t i = 0; i < 200; i++) { // should be a few us
@@ -224,6 +224,8 @@ void dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
 
   // Enable pull-up if supported
   dcd_connect(rhport);
+
+  return true;
 }
 
 void dcd_sof_enable(uint8_t rhport, bool en) {

src/portable/sunxi/dcd_sunxi_musb.c

@@ -867,8 +867,9 @@ static void usb_isr_handler(void) {
 	dcd_int_handler(0);
 }
 
-void dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
+bool dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
   (void) rh_init;
+
   dcd_disconnect(rhport);
   USBC_HardwareReset();
   USBC_PhyConfig();
@@ -895,6 +896,8 @@ void dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
   f1c100s_intc_set_isr(F1C100S_IRQ_USBOTG, usb_isr_handler);
 
   dcd_connect(rhport);
+
+  return true;
 }
 
 // Connect by enabling internal pull-up resistor on D+/D-

src/portable/synopsys/dwc2/dcd_dwc2.c

@@ -650,14 +650,15 @@ static bool check_dwc2(dwc2_regs_t* dwc2) {
   return true;
 }
 
-void dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
-  (void) rhport; (void) rh_init;
+bool dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
+  (void) rhport;
+  (void) rh_init;
   // Programming model begins in the last section of the chapter on the USB
   // peripheral in each Reference Manual.
   dwc2_regs_t* dwc2 = DWC2_REG(rhport);
 
   // Check Synopsys ID register, failed if controller clock/power is not enabled
-  TU_ASSERT(check_dwc2(dwc2), );
+  TU_ASSERT(check_dwc2(dwc2));
   dcd_disconnect(rhport);
 
   if (phy_hs_supported(dwc2)) {
@@ -726,6 +727,8 @@ void dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
 //  TU_LOG_HEX(DWC2_DEBUG, dwc2->gahbcfg);
 
   dcd_connect(rhport);
+
+  return true;
 }
 
 void dcd_int_enable(uint8_t rhport) {

src/portable/template/dcd_template.c

@@ -40,8 +40,9 @@
  *------------------------------------------------------------------*/
 
 // Initialize controller to device mode
-void dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
+bool dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
   (void) rhport; (void) rh_init;
+  return true;
 }
 
 // Enable device interrupt

src/portable/ti/msp430x5xx/dcd_msp430x5xx.c

@@ -130,7 +130,7 @@ static void enable_functional_reset(const bool enable)
 /*------------------------------------------------------------------*/
 /* Controller API
  *------------------------------------------------------------------*/
-void dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
+bool dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
   (void) rhport; (void) rh_init;
 
   USBKEYPID = USBKEY;
@@ -163,6 +163,8 @@ void dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
   }
 
   USBKEYPID = 0;
+
+  return true;
 }
 
 // There is no "USB peripheral interrupt disable" bit on MSP430, so we have

src/portable/valentyusb/eptri/dcd_eptri.c

@@ -336,7 +336,7 @@ static void dcd_reset(void)
 }
 
 // Initializes the USB peripheral for device mode and enables it.
-void dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
+bool dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
   (void) rhport;
   (void) rh_init;
 
@@ -352,6 +352,8 @@ void dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
 
   // Turn on the external pullup
   usb_pullup_out_write(1);
+
+  return true;
 }
 
 // Enables or disables the USB device interrupt(s). May be used to

src/portable/wch/dcd_ch32_usbfs.c

@@ -123,7 +123,7 @@ static void update_out(uint8_t rhport, uint8_t ep, size_t rx_len) {
 }
 
 /* public functions */
-void dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
+bool dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
   (void) rh_init;
   // init registers
   USBOTG_FS->BASE_CTRL = USBFS_CTRL_SYS_CTRL | USBFS_CTRL_INT_BUSY | USBFS_CTRL_DMA_EN;
@@ -154,6 +154,8 @@ void dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
   EP_DMA(3) = (uint32_t) &data.ep3_buffer.out[0];
 
   dcd_connect(rhport);
+
+  return true;
 }
 
 void dcd_int_handler(uint8_t rhport) {

src/portable/wch/dcd_ch32_usbhs.c

@@ -131,7 +131,7 @@ static void xfer_data_packet(uint8_t ep_num, tusb_dir_t ep_dir, xfer_ctl_t* xfer
   ep_set_response_and_toggle(ep_num, ep_dir, USBHS_EP_R_RES_ACK);
 }
 
-void dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
+bool dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
   (void) rhport;
   (void) rh_init;
 
@@ -171,6 +171,8 @@ void dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
 
   USBHSD->DEV_AD = 0;
   USBHSD->CONTROL |= USBHS_DEV_PU_EN;
+
+  return true;
 }
 
 void dcd_int_enable(uint8_t rhport) {

test/fuzz/dcd_fuzz.cc

@@ -46,10 +46,10 @@ tu_static State state = {false, 0, 0};
 // All no-ops as we are fuzzing.
 //--------------------------------------------------------------------+
 extern "C" {
-void dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
+bool dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
   UNUSED(rhport);
   UNUSED(rh_init);
-  return;
+  return true;
 }
 
 void dcd_int_handler(uint8_t rhport) {

test/unit-test/test/device/msc/test_msc_device.c

@@ -203,7 +203,7 @@ void setUp(void)
       .speed = TUSB_SPEED_AUTO
     };
 
-    dcd_init_Expect(0, &dev_init);
+    dcd_init_ExpectAndReturn(0, &dev_init, true);
     tusb_init(0, &dev_init);
   }
 

test/unit-test/test/device/usbd/test_usbd.c

@@ -127,7 +127,7 @@ void setUp(void) {
     };
 
     mscd_init_Expect();
-    dcd_init_Expect(0, &dev_init);
+    dcd_init_ExpectAndReturn(0, &dev_init, true);
 
     tusb_init(0, &dev_init);
   }