diff --git a/arch/arm/src/stm32/Make.defs b/arch/arm/src/stm32/Make.defs
index 41a22a6072..68a856c78b 100644
--- a/arch/arm/src/stm32/Make.defs
+++ b/arch/arm/src/stm32/Make.defs
@@ -34,7 +34,7 @@
 ############################################################################
 
 ifeq ($(CONFIG_ARMV7M_CMNVECTOR),y)
-HEAD_ASRC = 
+HEAD_ASRC =
 else
 HEAD_ASRC = stm32_vectors.S
 endif
@@ -90,7 +90,7 @@ CMN_CSRCS += up_copyarmstate.c
 endif
 endif
 
-CHIP_ASRCS  = 
+CHIP_ASRCS  =
 
 CHIP_CSRCS  = stm32_allocateheap.c stm32_start.c stm32_rcc.c stm32_lse.c
 CHIP_CSRCS += stm32_lsi.c stm32_gpio.c stm32_exti_gpio.c stm32_flash.c stm32_irq.c
diff --git a/arch/arm/src/stm32/stm32_otgfshost.c b/arch/arm/src/stm32/stm32_otgfshost.c
index 0f70a521ef..3614a7b022 100644
--- a/arch/arm/src/stm32/stm32_otgfshost.c
+++ b/arch/arm/src/stm32/stm32_otgfshost.c
@@ -98,7 +98,7 @@
  *    packets. Depends on CONFIG_DEBUG.
  */
 
-/* Pre-requistites (partial) */
+/* Pre-requisites (partial) */
 
 #ifndef CONFIG_STM32_SYSCFG
 #  error "CONFIG_STM32_SYSCFG is required"
@@ -135,6 +135,11 @@
 #  undef CONFIG_STM32_USBHOST_PKTDUMP
 #endif
 
+#undef HAVE_USB_TRACE 1
+#if defined(CONFIG_USBHOST_TRACE) || (defined(CONFIG_DEBUG) && defined(CONFIG_DEBUG_USB))
+#  define HAVE_USB_TRACE 1
+#endif
+
 /* HCD Setup *******************************************************************/
 /* Hardware capabilities */
 
@@ -719,22 +724,26 @@ static void stm32_chan_configure(FAR struct stm32_usbhost_s *priv, int chidx)
   switch (priv->chan[chidx].eptype)
     {
     case OTGFS_EPTYPE_CTRL:
+    case OTGFS_EPTYPE_BULK:
       {
-        if (priv->chan[chidx].in)
+#ifdef HAVE_USB_TRACE
+        uint16_t intrace;
+        uint16_t outtrace;
+
+        /* Determine the definitive trace ID to use below */
+
+        if (priv->chan[chidx].eptype == OTGFS_EPTYPE_CTRL)
           {
-            usbhost_vtrace2(OTGFS_VTRACE2_CHANCONF_CTRL_IN, chidx,
-                            priv->chan[chidx].epno);
+            intrace  = OTGFS_VTRACE2_CHANCONF_CTRL_IN;
+            outtrace = OTGFS_VTRACE2_CHANCONF_CTRL_OUT;
           }
         else
           {
-            usbhost_vtrace2(OTGFS_VTRACE2_CHANCONF_CTRL_OUT, chidx,
-                            priv->chan[chidx].epno);
+            intrace  = OTGFS_VTRACE2_CHANCONF_BULK_IN;
+            outtrace = OTGFS_VTRACE2_CHANCONF_BULK_OUT;
           }
-      }
-      break;
+#endif
 
-    case OTGFS_EPTYPE_BULK:
-      {
         /* Interrupts required for CTRL and BULK endpoints */
 
         regval |= (OTGFS_HCINT_XFRC  | OTGFS_HCINT_STALL | OTGFS_HCINT_NAK |
@@ -744,14 +753,12 @@ static void stm32_chan_configure(FAR struct stm32_usbhost_s *priv, int chidx)
 
         if (priv->chan[chidx].in)
           {
-            usbhost_vtrace2(OTGFS_VTRACE2_CHANCONF_BULK_IN, chidx,
-                            priv->chan[chidx].epno);
+            usbhost_vtrace2(intrace, chidx, priv->chan[chidx].epno);
             regval |= OTGFS_HCINT_BBERR;
           }
         else
           {
-            usbhost_vtrace2(OTGFS_VTRACE2_CHANCONF_BULK_OUT, chidx,
-                            priv->chan[chidx].epno);
+            usbhost_vtrace2(outtrace, chidx, priv->chan[chidx].epno);
             regval |= OTGFS_HCINT_NYET;
           }
       }
@@ -772,11 +779,13 @@ static void stm32_chan_configure(FAR struct stm32_usbhost_s *priv, int chidx)
                             priv->chan[chidx].epno);
             regval |= OTGFS_HCINT_BBERR;
           }
+#ifdef HAVE_USB_TRACE
         else
           {
             usbhost_vtrace2(OTGFS_VTRACE2_CHANCONF_INTR_OUT, chidx,
                             priv->chan[chidx].epno);
           }
+#endif
       }
       break;
 
@@ -794,11 +803,13 @@ static void stm32_chan_configure(FAR struct stm32_usbhost_s *priv, int chidx)
                             priv->chan[chidx].epno);
             regval |= (OTGFS_HCINT_TXERR | OTGFS_HCINT_BBERR);
           }
+#ifdef HAVE_USB_TRACE
         else
           {
             usbhost_vtrace2(OTGFS_VTRACE2_CHANCONF_ISOC_OUT, chidx,
                             priv->chan[chidx].epno);
           }
+#endif
       }
       break;
     }
@@ -1044,16 +1055,9 @@ static void stm32_chan_wakeup(FAR struct stm32_usbhost_s *priv,
 
   if (chan->result != EBUSY && chan->waiter)
     {
-      if (chan->in)
-        {
-          usbhost_vtrace2(OTGFS_VTRACE2_CHANWAKEUP_IN, chan->epno,
-                          chan->result);
-        }
-      else
-        {
-          usbhost_vtrace2(OTGFS_VTRACE2_CHANWAKEUP_OUT, chan->epno,
-                          chan->result);
-        }
+      usbhost_vtrace2(chan->in ? OTGFS_VTRACE2_CHANWAKEUP_IN :
+                                 OTGFS_VTRACE2_CHANWAKEUP_OUT,
+                      chan->epno, chan->result);
 
       stm32_givesem(&chan->waitsem);
       chan->waiter = false;
@@ -1112,7 +1116,6 @@ static void stm32_transfer_start(FAR struct stm32_usbhost_s *priv, int chidx)
         {
           npackets = STM32_MAX_PKTCOUNT;
           chan->buflen = STM32_MAX_PKTCOUNT * maxpacket;
-
           usbhost_trace2(OTGFS_TRACE2_CLIP, chidx, chan->buflen);
         }
     }
diff --git a/arch/arm/src/stm32/stm32_usbhost.h b/arch/arm/src/stm32/stm32_usbhost.h
index b3a68cbeff..553a0d3ba7 100644
--- a/arch/arm/src/stm32/stm32_usbhost.h
+++ b/arch/arm/src/stm32/stm32_usbhost.h
@@ -172,14 +172,14 @@ extern "C" {
  *   Enable/disable driving of VBUS 5V output.  This function must be provided be
  *   each platform that implements the STM32 OTG FS host interface
  *
- *   "On-chip 5 V VBUS generation is not supported. For this reason, a charge pump 
- *    or, if 5 V are available on the application board, a basic power switch, must 
- *    be added externally to drive the 5 V VBUS line. The external charge pump can 
- *    be driven by any GPIO output. When the application decides to power on VBUS 
- *    using the chosen GPIO, it must also set the port power bit in the host port 
+ *   "On-chip 5 V VBUS generation is not supported. For this reason, a charge pump
+ *    or, if 5 V are available on the application board, a basic power switch, must
+ *    be added externally to drive the 5 V VBUS line. The external charge pump can
+ *    be driven by any GPIO output. When the application decides to power on VBUS
+ *    using the chosen GPIO, it must also set the port power bit in the host port
  *    control and status register (PPWR bit in OTG_FS_HPRT).
  *
- *   "The application uses this field to control power to this port, and the core 
+ *   "The application uses this field to control power to this port, and the core
  *    clears this bit on an overcurrent condition."
  *
  * Input Parameters:
diff --git a/drivers/usbhost/usbhost_enumerate.c b/drivers/usbhost/usbhost_enumerate.c
index 96ff066aad..1857499ed2 100644
--- a/drivers/usbhost/usbhost_enumerate.c
+++ b/drivers/usbhost/usbhost_enumerate.c
@@ -145,7 +145,7 @@ static inline int usbhost_devdesc(FAR const struct usb_devdesc_s *devdesc,
         id->base, id->subclass, id->proto, id->vid, id->pid);
   return OK;
 }
-                                
+
 /*******************************************************************************
  * Name: usbhost_configdesc
  *
@@ -193,7 +193,7 @@ static inline int usbhost_configdesc(const uint8_t *configdesc, int cfglen,
            * Typically these values are zero meaning that the "real" ID
            * information resides in the device descriptor.
            */
- 
+
           DEBUGASSERT(remaining >= sizeof(struct usb_ifdesc_s));
           id->base     = ifdesc->classid;
           id->subclass = ifdesc->subclass;
@@ -204,7 +204,7 @@ static inline int usbhost_configdesc(const uint8_t *configdesc, int cfglen,
         }
 
      /* Increment the address of the next descriptor */
- 
+
       configdesc += ifdesc->len;
       remaining  -= ifdesc->len;
     }
@@ -510,7 +510,7 @@ int usbhost_enumerate(FAR struct usbhost_driver_s *drvr, uint8_t funcaddr,
    * It is not needed further here but it may be needed by the class driver
    * during its connection operations.
    */
- 
+
   DRVR_FREE(drvr, (uint8_t*)ctrlreq);
   ctrlreq = NULL;
 
diff --git a/drivers/usbhost/usbhost_trace.c b/drivers/usbhost/usbhost_trace.c
index 92dc2c5703..d6d1f4dd40 100644
--- a/drivers/usbhost/usbhost_trace.c
+++ b/drivers/usbhost/usbhost_trace.c
@@ -301,5 +301,3 @@ int usbhost_trdump(void)
   return usbhost_trenumerate(usbhost_trsyslog, NULL);
 }
 #endif /* CONFIG_USBHOST_TRACE */
-
-