diff --git a/src/class/audio/audio_device.c b/src/class/audio/audio_device.c
index 81df95139..de5a20d6d 100644
--- a/src/class/audio/audio_device.c
+++ b/src/class/audio/audio_device.c
@@ -2199,7 +2199,7 @@ bool tud_audio_buffer_and_schedule_control_xfer(uint8_t rhport, tusb_control_req
   if (len > _audiod_fct[func_id].ctrl_buf_sz) len = _audiod_fct[func_id].ctrl_buf_sz;
 
   // Copy into buffer
-  TU_VERIFY(tu_memcpy_s(_audiod_fct[func_id].ctrl_buf, sizeof(_audiod_fct[func_id].ctrl_buf), data, (size_t)len)==0);
+  TU_VERIFY(0 == tu_memcpy_s(_audiod_fct[func_id].ctrl_buf, sizeof(_audiod_fct[func_id].ctrl_buf), data, (size_t)len));
 
   // Schedule transmit
   return tud_control_xfer(rhport, p_request, (void*)_audiod_fct[func_id].ctrl_buf, len);
diff --git a/src/class/hid/hid_device.c b/src/class/hid/hid_device.c
index 40654eef9..37a22b609 100644
--- a/src/class/hid/hid_device.c
+++ b/src/class/hid/hid_device.c
@@ -93,11 +93,11 @@ bool tud_hid_n_report(uint8_t instance, uint8_t report_id, void const* report, u
   if (report_id)
   {
     p_hid->epin_buf[0] = report_id;
-    TU_VERIFY(tu_memcpy_s(p_hid->epin_buf+1, CFG_TUD_HID_EP_BUFSIZE-1, report, len)==0);
+    TU_VERIFY(0 == tu_memcpy_s(p_hid->epin_buf+1, CFG_TUD_HID_EP_BUFSIZE-1, report, len));
     len++;
   }else
   {
-    TU_VERIFY(tu_memcpy_s(p_hid->epin_buf, CFG_TUD_HID_EP_BUFSIZE, report, len)==0);
+    TU_VERIFY(0 == tu_memcpy_s(p_hid->epin_buf, CFG_TUD_HID_EP_BUFSIZE, report, len));
   }
 
   return usbd_edpt_xfer(rhport, p_hid->ep_in, p_hid->epin_buf, len);
@@ -122,7 +122,7 @@ bool tud_hid_n_keyboard_report(uint8_t instance, uint8_t report_id, uint8_t modi
 
   if ( keycode )
   {
-    TU_VERIFY(tu_memcpy_s(report.keycode, sizeof(report.keycode), keycode, sizeof(report.keycode))==0);
+    memcpy(report.keycode, keycode, sizeof(report.keycode));
   }else
   {
     tu_memclr(report.keycode, 6);
diff --git a/src/class/midi/midi_device.c b/src/class/midi/midi_device.c
index 0b52be181..92689dfb0 100644
--- a/src/class/midi/midi_device.c
+++ b/src/class/midi/midi_device.c
@@ -182,7 +182,7 @@ uint32_t tud_midi_n_stream_read(uint8_t itf, uint8_t cable_num, void* buffer, ui
     uint8_t const count = (uint8_t) tu_min32(stream->total - stream->index, bufsize);
 
     // Skip the header (1st byte) in the buffer
-    TU_VERIFY(tu_memcpy_s(buf8, bufsize, stream->buffer + 1 + stream->index, count)==0);
+    TU_VERIFY(0 == tu_memcpy_s(buf8, bufsize, stream->buffer + 1 + stream->index, count));
 
     total_read += count;
     stream->index += count;
diff --git a/src/class/msc/msc_device.c b/src/class/msc/msc_device.c
index ed4a3e86c..ecc95377f 100644
--- a/src/class/msc/msc_device.c
+++ b/src/class/msc/msc_device.c
@@ -707,7 +707,7 @@ static int32_t proc_builtin_scsi(uint8_t lun, uint8_t const scsi_cmd[16], uint8_
         read_capa10.block_size = tu_htonl(block_size);
 
         resplen = sizeof(read_capa10);
-        TU_VERIFY(tu_memcpy_s(buffer, bufsize, &read_capa10, (size_t) resplen));
+        TU_VERIFY(0 == tu_memcpy_s(buffer, bufsize, &read_capa10, (size_t) resplen));
       }
     }
     break;
@@ -741,7 +741,7 @@ static int32_t proc_builtin_scsi(uint8_t lun, uint8_t const scsi_cmd[16], uint8_
         read_fmt_capa.block_size_u16 = tu_htons(block_size);
 
         resplen = sizeof(read_fmt_capa);
-        TU_VERIFY(tu_memcpy_s(buffer, bufsize, &read_fmt_capa, (size_t) resplen)==0);
+        TU_VERIFY(0 == tu_memcpy_s(buffer, bufsize, &read_fmt_capa, (size_t) resplen));
       }
     }
     break;
@@ -764,7 +764,7 @@ static int32_t proc_builtin_scsi(uint8_t lun, uint8_t const scsi_cmd[16], uint8_
       tud_msc_inquiry_cb(lun, inquiry_rsp.vendor_id, inquiry_rsp.product_id, inquiry_rsp.product_rev);
 
       resplen = sizeof(inquiry_rsp);
-      TU_VERIFY(tu_memcpy_s(buffer, bufsize, &inquiry_rsp, (size_t) resplen)==0);
+      TU_VERIFY(0 == tu_memcpy_s(buffer, bufsize, &inquiry_rsp, (size_t) resplen));
     }
     break;
 
@@ -788,7 +788,7 @@ static int32_t proc_builtin_scsi(uint8_t lun, uint8_t const scsi_cmd[16], uint8_
       mode_resp.write_protected = !writable;
 
       resplen = sizeof(mode_resp);
-      TU_VERIFY(tu_memcpy_s(buffer, bufsize, &mode_resp, (size_t) resplen)==0);
+      TU_VERIFY(0 == tu_memcpy_s(buffer, bufsize, &mode_resp, (size_t) resplen));
     }
     break;
 
@@ -806,7 +806,7 @@ static int32_t proc_builtin_scsi(uint8_t lun, uint8_t const scsi_cmd[16], uint8_
       sense_rsp.add_sense_qualifier = p_msc->add_sense_qualifier;
 
       resplen = sizeof(sense_rsp);
-      TU_VERIFY(tu_memcpy_s(buffer, bufsize, &sense_rsp, (size_t) resplen)==0);
+      TU_VERIFY(0 == tu_memcpy_s(buffer, bufsize, &sense_rsp, (size_t) resplen));
 
       // request sense callback could overwrite the sense data
       if (tud_msc_request_sense_cb)
diff --git a/src/common/tusb_common.h b/src/common/tusb_common.h
index 78fdcfe36..3e5e1d427 100644
--- a/src/common/tusb_common.h
+++ b/src/common/tusb_common.h
@@ -84,11 +84,26 @@
 #define tu_varclr(_var)          tu_memclr(_var, sizeof(*(_var)))
 
 // This is a backport of memset_s from c11
-int32_t tu_memset_s(void *dest, size_t destsz, int ch, size_t count); 
+TU_ATTR_ALWAYS_INLINE static inline int tu_memset_s(void *dest, size_t destsz, int ch, size_t count)
+{
+  // TODO may check if desst and src is not NULL
+  if (count > destsz) {
+    return -1;
+  }
+  memset(dest, ch, count);
+  return 0;
+}
 
 // This is a backport of memcpy_s from c11
-int32_t tu_memcpy_s(void *dest, size_t destsz,
-                  const void * src, size_t count );
+TU_ATTR_ALWAYS_INLINE static inline int tu_memcpy_s(void *dest, size_t destsz, const void * src, size_t count )
+{
+  // TODO may check if desst and src is not NULL
+  if (count > destsz) {
+    return -1;
+  }
+  memcpy(dest, src, count);
+  return 0;
+}
 
 
 //------------- Bytes -------------//
diff --git a/src/device/usbd_control.c b/src/device/usbd_control.c
index ce4ddab66..b8a200845 100644
--- a/src/device/usbd_control.c
+++ b/src/device/usbd_control.c
@@ -94,7 +94,7 @@ static bool _data_stage_xact(uint8_t rhport)
   {
     ep_addr = EDPT_CTRL_IN;
     if ( xact_len ) {
-      TU_VERIFY(tu_memcpy_s(_usbd_ctrl_buf, CFG_TUD_ENDPOINT0_SIZE, _ctrl_xfer.buffer, xact_len)==0);
+      TU_VERIFY(0 == tu_memcpy_s(_usbd_ctrl_buf, CFG_TUD_ENDPOINT0_SIZE, _ctrl_xfer.buffer, xact_len));
     }
   }
 
diff --git a/src/tusb.c b/src/tusb.c
index c918b0248..8318e5275 100644
--- a/src/tusb.c
+++ b/src/tusb.c
@@ -24,7 +24,6 @@
  * This file is part of the TinyUSB stack.
  */
 
-#include "common/tusb_common.h"
 #include "tusb_option.h"
 
 #if CFG_TUH_ENABLED || CFG_TUD_ENABLED
@@ -487,23 +486,3 @@ void tu_print_mem(void const *buf, uint32_t count, uint8_t indent)
 #endif
 
 #endif // host or device enabled
-
-//--------------------------------------------------------------------+
-// Common
-//--------------------------------------------------------------------+
-
-int32_t tu_memset_s(void *dest, size_t destsz, int ch, size_t count) {
-  if (count > destsz) {
-    return -1;
-  }
-  memset(dest, ch, count);
-  return 0;
-}
-
-int32_t tu_memcpy_s(void *dest, size_t destsz, const void *src, size_t count) {
-  if (count > destsz) {
-    return -1;
-  }
-  memcpy(dest, src, count);
-  return 0;
-}
\ No newline at end of file