Revert "Variables total_length and rem_length moved into device specific context"

This reverts commit 9d71bad.

Signed-off-by: Frederic Pillon <frederic.pillon@st.com>

Author: makarenya

cores/arduino/stm32/usb/cdc/usbd_cdc.c

@@ -651,9 +651,9 @@ static uint8_t  USBD_CDC_DataIn(USBD_HandleTypeDef *pdev, uint8_t epnum)
   USBD_CDC_ItfTypeDef *ctrl = (USBD_CDC_ItfTypeDef *)pdev->pUserData;
 
   if (pdev->pClassData != NULL) {
-    if ((hcdc->TxLastLength > 0U) && ((hcdc->TxLastLength % hpcd->IN_ep[epnum].maxpacket) == 0U)) {
+    if ((pdev->ep_in[epnum].total_length > 0U) && ((pdev->ep_in[epnum].total_length % hpcd->IN_ep[epnum].maxpacket) == 0U)) {
       /* Update the packet total length */
-      hcdc->TxLastLength = 0U;
+      pdev->ep_in[epnum].total_length = 0U;
 
       /* Send ZLP */
       USBD_LL_Transmit(pdev, epnum, NULL, 0U);
@@ -835,7 +835,7 @@ uint8_t  USBD_CDC_TransmitPacket(USBD_HandleTypeDef *pdev)
       hcdc->TxState = 1U;
 
       /* Update the packet total length */
-      hcdc->TxLastLength = hcdc->TxLength;
+      pdev->ep_in[CDC_IN_EP & 0xFU].total_length = hcdc->TxLength;
 
       /* Transmit next packet */
       USBD_LL_Transmit(pdev, CDC_IN_EP, hcdc->TxBuffer,

cores/arduino/stm32/usb/cdc/usbd_cdc.h

@@ -115,7 +115,6 @@ typedef struct {
   uint8_t  *TxBuffer;
   uint32_t RxLength;
   uint32_t TxLength;
-  uint32_t TxLastLength;
 
   __IO uint32_t TxState;
   __IO uint32_t RxState;