diff --git a/configs/cloudctrl/src/up_usb.c b/configs/cloudctrl/src/up_usb.c
index 2ef928c14f1..f38689b5c06 100644
--- a/configs/cloudctrl/src/up_usb.c
+++ b/configs/cloudctrl/src/up_usb.c
@@ -211,14 +211,14 @@ int stm32_usbhost_initialize(void)
  *   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:
@@ -234,7 +234,7 @@ int stm32_usbhost_initialize(void)
 void stm32_usbhost_vbusdrive(int iface, bool enable)
 {
   DEBUGASSERT(iface == 0);
-  
+
   if (enable)
     {
       /* Enable the Power Switch by driving the enable pin low */
@@ -242,9 +242,9 @@ void stm32_usbhost_vbusdrive(int iface, bool enable)
       stm32_gpiowrite(GPIO_OTGFS_PWRON, false);
     }
   else
-    { 
+    {
       /* Disable the Power Switch by driving the enable pin high */
- 
+
       stm32_gpiowrite(GPIO_OTGFS_PWRON, true);
     }
 }
diff --git a/configs/mikroe-stm32f4/src/up_usb.c b/configs/mikroe-stm32f4/src/up_usb.c
index 967da72fb43..9a45c1a9b6e 100644
--- a/configs/mikroe-stm32f4/src/up_usb.c
+++ b/configs/mikroe-stm32f4/src/up_usb.c
@@ -210,14 +210,14 @@ int stm32_usbhost_initialize(void)
  *   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:
@@ -233,7 +233,7 @@ int stm32_usbhost_initialize(void)
 void stm32_usbhost_vbusdrive(int iface, bool enable)
 {
   DEBUGASSERT(iface == 0);
-  
+
   if (enable)
     {
       /* Enable the Power Switch by driving the enable pin low */
@@ -241,9 +241,9 @@ void stm32_usbhost_vbusdrive(int iface, bool enable)
       stm32_gpiowrite(GPIO_OTGFS_PWRON, false);
     }
   else
-    { 
+    {
       /* Disable the Power Switch by driving the enable pin high */
- 
+
       stm32_gpiowrite(GPIO_OTGFS_PWRON, true);
     }
 }
diff --git a/configs/shenzhou/src/up_usb.c b/configs/shenzhou/src/up_usb.c
index 95e3a3c39c0..e3416d86e70 100644
--- a/configs/shenzhou/src/up_usb.c
+++ b/configs/shenzhou/src/up_usb.c
@@ -210,14 +210,14 @@ int stm32_usbhost_initialize(void)
  *   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:
@@ -233,7 +233,7 @@ int stm32_usbhost_initialize(void)
 void stm32_usbhost_vbusdrive(int iface, bool enable)
 {
   DEBUGASSERT(iface == 0);
-  
+
   if (enable)
     {
       /* Enable the Power Switch by driving the enable pin low */
@@ -241,9 +241,9 @@ void stm32_usbhost_vbusdrive(int iface, bool enable)
       stm32_gpiowrite(GPIO_OTGFS_PWRON, false);
     }
   else
-    { 
+    {
       /* Disable the Power Switch by driving the enable pin high */
- 
+
       stm32_gpiowrite(GPIO_OTGFS_PWRON, true);
     }
 }
diff --git a/configs/stm3220g-eval/src/up_usb.c b/configs/stm3220g-eval/src/up_usb.c
index 72187d00911..d1638b21011 100644
--- a/configs/stm3220g-eval/src/up_usb.c
+++ b/configs/stm3220g-eval/src/up_usb.c
@@ -210,14 +210,14 @@ int stm32_usbhost_initialize(void)
  *   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:
@@ -233,7 +233,7 @@ int stm32_usbhost_initialize(void)
 void stm32_usbhost_vbusdrive(int iface, bool enable)
 {
   DEBUGASSERT(iface == 0);
-  
+
   if (enable)
     {
       /* Enable the Power Switch by driving the enable pin low */
@@ -241,9 +241,9 @@ void stm32_usbhost_vbusdrive(int iface, bool enable)
       stm32_gpiowrite(GPIO_OTGFS_PWRON, false);
     }
   else
-    { 
+    {
       /* Disable the Power Switch by driving the enable pin high */
- 
+
       stm32_gpiowrite(GPIO_OTGFS_PWRON, true);
     }
 }
diff --git a/configs/stm3240g-eval/src/up_usb.c b/configs/stm3240g-eval/src/up_usb.c
index d27ac37351b..e12e65e43ed 100644
--- a/configs/stm3240g-eval/src/up_usb.c
+++ b/configs/stm3240g-eval/src/up_usb.c
@@ -210,14 +210,14 @@ int stm32_usbhost_initialize(void)
  *   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:
@@ -233,7 +233,7 @@ int stm32_usbhost_initialize(void)
 void stm32_usbhost_vbusdrive(int iface, bool enable)
 {
   DEBUGASSERT(iface == 0);
-  
+
   if (enable)
     {
       /* Enable the Power Switch by driving the enable pin low */
@@ -241,9 +241,9 @@ void stm32_usbhost_vbusdrive(int iface, bool enable)
       stm32_gpiowrite(GPIO_OTGFS_PWRON, false);
     }
   else
-    { 
+    {
       /* Disable the Power Switch by driving the enable pin high */
- 
+
       stm32_gpiowrite(GPIO_OTGFS_PWRON, true);
     }
 }
diff --git a/configs/stm32f429i-disco/src/stm32_usb.c b/configs/stm32f429i-disco/src/stm32_usb.c
index 11369638e7b..433ceaccd20 100644
--- a/configs/stm32f429i-disco/src/stm32_usb.c
+++ b/configs/stm32f429i-disco/src/stm32_usb.c
@@ -209,14 +209,14 @@ int stm32_usbhost_initialize(void)
  *   Enable/disable driving of VBUS 5V output.  This function must be provided be
  *   each platform that implements the STM32 OTG HS 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_HS_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:
@@ -232,7 +232,7 @@ int stm32_usbhost_initialize(void)
 void stm32_usbhost_vbusdrive(int iface, bool enable)
 {
   DEBUGASSERT(iface == 0);
-  
+
   if (enable)
     {
       /* Enable the Power Switch by driving the enable pin low */
@@ -240,9 +240,9 @@ void stm32_usbhost_vbusdrive(int iface, bool enable)
       stm32_gpiowrite(GPIO_OTGHS_PWRON, false);
     }
   else
-    { 
+    {
       /* Disable the Power Switch by driving the enable pin high */
- 
+
       stm32_gpiowrite(GPIO_OTGHS_PWRON, true);
     }
 }