Some reverts and changes after discussion.

src/host/usbh.c

@@ -246,8 +246,8 @@ static uint8_t _usbh_ctrl_buf[CFG_TUH_ENUMERATION_BUFSIZE];
 
 // Control transfer: since most controller does not support multiple control transfer
 // on multiple devices concurrently. And control transfer is not used much except enumeration
-// We will only execute control transfer one at a time.CFG_TUSB_MEM_SECTION TU_ATTR_ALIGNED(4096)
-CFG_TUSB_MEM_SECTION struct
+// We will only execute control transfer one at a time.
+struct
 {
   tusb_control_request_t request TU_ATTR_ALIGNED(4);
   uint8_t* buffer;
@@ -509,7 +509,7 @@ void tuh_task_ext(uint32_t timeout_ms, bool in_isr)
       default: break;
     }
 
-#if CFG_TUSB_OS != OPT_OS_NONE && CFG_TUSB_OS != OPT_OS_PICO && CFG_TUSB_OS != OPT_OS_FREERTOS
+#if CFG_TUSB_OS != OPT_OS_NONE && CFG_TUSB_OS != OPT_OS_PICO
     // return if there is no more events, for application to run other background
     if (osal_queue_empty(_usbh_q)) return;
 #endif

src/osal/osal_freertos.h

@@ -74,6 +74,7 @@ TU_ATTR_ALWAYS_INLINE static inline osal_semaphore_t osal_semaphore_create(osal_
 #if configSUPPORT_STATIC_ALLOCATION == 1
   return xSemaphoreCreateBinaryStatic(semdef);
 #else
+  (void)(semdef);
   return xSemaphoreCreateBinary();
 #endif
 }
@@ -125,6 +126,7 @@ TU_ATTR_ALWAYS_INLINE static inline osal_mutex_t osal_mutex_create(osal_mutex_de
 #if configSUPPORT_STATIC_ALLOCATION == 1
   return xSemaphoreCreateMutexStatic(mdef);
 #else
+  (void)(mdef);
   return xSemaphoreCreateMutex();
 #endif
 
@@ -154,8 +156,9 @@ typedef struct
   uint16_t depth;
   uint16_t item_sz;
   void*    buf;
-
+#if configSUPPORT_STATIC_ALLOCATION == 1
   StaticQueue_t sq;
+#endif
 }osal_queue_def_t;
 
 typedef QueueHandle_t osal_queue_t;

src/portable/ehci/ehci.c

@@ -193,7 +193,8 @@ static void list_remove_qhd_by_addr(ehci_link_t* list_head, uint8_t dev_addr)
   {
     // TODO check type for ISO iTD and siTD
     // TODO Suppress cast-align warning
-    #pragma GCC diagnostic push
+	if( prev == NULL ) break;
+	#pragma GCC diagnostic push
     #pragma GCC diagnostic ignored "-Wcast-align"
     ehci_qhd_t* qhd = (ehci_qhd_t*) list_next(prev);
     #pragma GCC diagnostic pop