Drop locking around TX and RX. The DMA channels are independent of each other

Author: Paul Thompson

targets/TARGET_STM/TARGET_STM32F7/device/stm32f7xx_hal_eth.c

@@ -667,9 +667,6 @@ HAL_StatusTypeDef HAL_ETH_TransmitFrame(ETH_HandleTypeDef *heth, uint32_t FrameL
 {
   uint32_t bufcount = 0, size = 0, i = 0;
 
-  /* Process Locked */
-  __HAL_LOCK(heth);
-  
   /* Set the ETH peripheral state to BUSY */
   heth->State = HAL_ETH_STATE_BUSY;
 
@@ -678,9 +675,6 @@ HAL_StatusTypeDef HAL_ETH_TransmitFrame(ETH_HandleTypeDef *heth, uint32_t FrameL
     /* Set ETH HAL state to READY */
     heth->State = HAL_ETH_STATE_READY;
 
-    /* Process Unlocked */
-    __HAL_UNLOCK(heth);
-    
     return  HAL_ERROR;                                    
   }  
 
@@ -690,9 +684,6 @@ HAL_StatusTypeDef HAL_ETH_TransmitFrame(ETH_HandleTypeDef *heth, uint32_t FrameL
     /* OWN bit set */
     heth->State = HAL_ETH_STATE_BUSY_TX;
 
-    /* Process Unlocked */
-    __HAL_UNLOCK(heth);
-    
     return HAL_ERROR;
   }
 
@@ -776,9 +767,6 @@ HAL_StatusTypeDef HAL_ETH_TransmitFrame(ETH_HandleTypeDef *heth, uint32_t FrameL
   /* Set ETH HAL State to Ready */
   heth->State = HAL_ETH_STATE_READY;
 
-  /* Process Unlocked */
-  __HAL_UNLOCK(heth);
-  
   /* Return function status */
   return HAL_OK;
 }
@@ -793,9 +781,6 @@ HAL_StatusTypeDef HAL_ETH_GetReceivedFrame(ETH_HandleTypeDef *heth)
 {
   uint32_t framelength = 0;
 
-  /* Process Locked */
-  __HAL_LOCK(heth);
-  
   /* Check the ETH state to BUSY */
   heth->State = HAL_ETH_STATE_BUSY;
 
@@ -930,9 +915,6 @@ HAL_StatusTypeDef HAL_ETH_GetReceivedFrame_IT(ETH_HandleTypeDef *heth)
       /* Set HAL State to Ready */
       heth->State = HAL_ETH_STATE_READY;
 
-      /* Process Unlocked */
-      __HAL_UNLOCK(heth);
-  
       /* Return function status */
       return HAL_OK;
     }
@@ -941,9 +923,6 @@ HAL_StatusTypeDef HAL_ETH_GetReceivedFrame_IT(ETH_HandleTypeDef *heth)
   /* Set HAL State to Ready */
   heth->State = HAL_ETH_STATE_READY;
 
-  /* Process Unlocked */
-  __HAL_UNLOCK(heth);
-  
   /* Return function status */
   return HAL_ERROR;
 }