diff --git a/demos/host/host_os_none/host_os_none.uvopt b/demos/host/host_os_none/host_os_none.uvopt
index 4790d5e0a..d54fd60d0 100644
--- a/demos/host/host_os_none/host_os_none.uvopt
+++ b/demos/host/host_os_none/host_os_none.uvopt
@@ -928,10 +928,10 @@
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <Focus>0</Focus>
-      <ColumnNumber>12</ColumnNumber>
+      <ColumnNumber>1</ColumnNumber>
       <tvExpOptDlg>0</tvExpOptDlg>
-      <TopLine>141</TopLine>
-      <CurrentLine>160</CurrentLine>
+      <TopLine>122</TopLine>
+      <CurrentLine>142</CurrentLine>
       <bDave2>0</bDave2>
       <PathWithFileName>..\src\msc_app.c</PathWithFileName>
       <FilenameWithoutPath>msc_app.c</FilenameWithoutPath>
@@ -1018,8 +1018,8 @@
       <Focus>0</Focus>
       <ColumnNumber>0</ColumnNumber>
       <tvExpOptDlg>0</tvExpOptDlg>
-      <TopLine>0</TopLine>
-      <CurrentLine>0</CurrentLine>
+      <TopLine>147</TopLine>
+      <CurrentLine>166</CurrentLine>
       <bDave2>0</bDave2>
       <PathWithFileName>..\..\..\tinyusb\host\hub.c</PathWithFileName>
       <FilenameWithoutPath>hub.c</FilenameWithoutPath>
@@ -1114,7 +1114,7 @@
       <Focus>0</Focus>
       <ColumnNumber>17</ColumnNumber>
       <tvExpOptDlg>0</tvExpOptDlg>
-      <TopLine>31</TopLine>
+      <TopLine>32</TopLine>
       <CurrentLine>45</CurrentLine>
       <bDave2>0</bDave2>
       <PathWithFileName>..\..\..\tinyusb\hal\hal_lpc175x_6x.c</PathWithFileName>
@@ -1160,10 +1160,10 @@
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <Focus>0</Focus>
-      <ColumnNumber>6</ColumnNumber>
+      <ColumnNumber>0</ColumnNumber>
       <tvExpOptDlg>0</tvExpOptDlg>
-      <TopLine>250</TopLine>
-      <CurrentLine>271</CurrentLine>
+      <TopLine>1</TopLine>
+      <CurrentLine>34</CurrentLine>
       <bDave2>0</bDave2>
       <PathWithFileName>..\..\..\tinyusb\class\cdc_host.c</PathWithFileName>
       <FilenameWithoutPath>cdc_host.c</FilenameWithoutPath>
@@ -1210,8 +1210,8 @@
       <Focus>0</Focus>
       <ColumnNumber>0</ColumnNumber>
       <tvExpOptDlg>0</tvExpOptDlg>
-      <TopLine>359</TopLine>
-      <CurrentLine>380</CurrentLine>
+      <TopLine>1</TopLine>
+      <CurrentLine>1</CurrentLine>
       <bDave2>0</bDave2>
       <PathWithFileName>..\..\..\tinyusb\class\msc_host.c</PathWithFileName>
       <FilenameWithoutPath>msc_host.c</FilenameWithoutPath>
@@ -1306,7 +1306,7 @@
       <Focus>0</Focus>
       <ColumnNumber>63</ColumnNumber>
       <tvExpOptDlg>0</tvExpOptDlg>
-      <TopLine>583</TopLine>
+      <TopLine>584</TopLine>
       <CurrentLine>605</CurrentLine>
       <bDave2>0</bDave2>
       <PathWithFileName>..\..\..\tinyusb\host\ohci\ohci.c</PathWithFileName>
diff --git a/tinyusb/class/msc_host.h b/tinyusb/class/msc_host.h
index 3dcf18704..46ee139dd 100644
--- a/tinyusb/class/msc_host.h
+++ b/tinyusb/class/msc_host.h
@@ -139,7 +139,7 @@ tusb_error_t tusbh_msc_write10(uint8_t dev_addr, uint8_t lun, void const * p_buf
  * \retval      TUSB_ERROR_INVALID_PARA if input parameters are not correct
  * \note        This function is non-blocking and returns immediately. The result of USB transfer will be reported by the interface's callback function
  */
-tusb_error_t tusbh_msc_request_sense(uint8_t dev_addr, uint8_t lun, uint8_t *p_data) ATTR_WARN_UNUSED_RESULT;
+tusb_error_t tusbh_msc_request_sense(uint8_t dev_addr, uint8_t lun, uint8_t *p_data);
 
 /** \brief 			Perform SCSI TEST UNIT READY command to test if MassStorage device is ready
  * \param[in]		dev_addr	device address
diff --git a/tinyusb/hal/hal_lpc175x_6x.c b/tinyusb/hal/hal_lpc175x_6x.c
index bb840a40d..c04b1660c 100644
--- a/tinyusb/hal/hal_lpc175x_6x.c
+++ b/tinyusb/hal/hal_lpc175x_6x.c
@@ -47,11 +47,13 @@
 tusb_error_t hal_init(void)
 {
   enum {
-    USBCLK_DEVCIE = 0x12, // AHB + Device
-    USBCLK_HOST   = 0x19  // AHB + Host + OTG (!)
+    USBCLK_DEVCIE = 0x12,     // AHB + Device
+    USBCLK_HOST   = 0x19,     // AHB + Host + OTG (!)
+
+    PCONP_PCUSB   = BIT_(31)
   };
 
-  LPC_SC->PCONP |= CLKPWR_PCONP_PCUSB; // enable USB Peripherals
+  LPC_SC->PCONP |= PCONP_PCUSB; // enable USB Peripherals
 
   //------------- user manual 11.13 usb device controller initialization -------------//
   PINSEL_ConfigPin( &(PINSEL_CFG_Type) { .Portnum = 0, .Pinnum = 29, .Funcnum = 1} ); // P0.29 as D+
diff --git a/tinyusb/hal/hal_lpc175x_6x.h b/tinyusb/hal/hal_lpc175x_6x.h
index 47b38747b..e0ab4f59a 100644
--- a/tinyusb/hal/hal_lpc175x_6x.h
+++ b/tinyusb/hal/hal_lpc175x_6x.h
@@ -47,7 +47,6 @@
 #define _TUSB_HAL_LPC175X_6X_H_
 
 #include "LPC17xx.h"
-#include "lpc17xx_clkpwr.h"
 #include "lpc17xx_pinsel.h"
 
 #ifdef __cplusplus