278   if (husart == NULL)  in HAL_USART_Init()
294     if (husart->MspInitCallback == NULL)  in HAL_USART_Init()
339   if (husart == NULL)  in HAL_USART_DeInit()
354   if (husart->MspDeInitCallback == NULL)  in HAL_USART_DeInit()
432   if (pCallback == NULL)  in HAL_USART_RegisterCallback()
751     if ((pTxData == NULL) || (Size == 0U))  in HAL_USART_Transmit()
771       ptxdata8bits  = NULL;  in HAL_USART_Transmit()
777       ptxdata16bits = NULL;  in HAL_USART_Transmit()
787       if (ptxdata8bits == NULL)  in HAL_USART_Transmit()
850     if ((pRxData == NULL) || (Size == 0U))  in HAL_USART_Receive()
874       prxdata8bits  = NULL;  in HAL_USART_Receive()
880       prxdata16bits = NULL;  in HAL_USART_Receive()
905       if (prxdata8bits == NULL)  in HAL_USART_Receive()
967     if ((pTxData == NULL) || (pRxData == NULL) || (Size == 0U))  in HAL_USART_TransmitReceive()
993       prxdata8bits  = NULL;  in HAL_USART_TransmitReceive()
994       ptxdata8bits  = NULL;  in HAL_USART_TransmitReceive()
1002       ptxdata16bits = NULL;  in HAL_USART_TransmitReceive()
1003       prxdata16bits = NULL;  in HAL_USART_TransmitReceive()
1013       if (ptxdata8bits == NULL)  in HAL_USART_TransmitReceive()
1039         if (ptxdata8bits == NULL)  in HAL_USART_TransmitReceive()
1061         if (prxdata8bits == NULL)  in HAL_USART_TransmitReceive()
1106     if ((pTxData == NULL) || (Size == 0U))  in HAL_USART_Transmit_IT()
1117     husart->TxISR       = NULL;  in HAL_USART_Transmit_IT()
1192     if ((pRxData == NULL) || (Size == 0U))  in HAL_USART_Receive_IT()
1203     husart->RxISR       = NULL;  in HAL_USART_Receive_IT()
1306     if ((pTxData == NULL) || (pRxData == NULL) || (Size == 0U))  in HAL_USART_TransmitReceive_IT()
1416     if ((pTxData == NULL) || (Size == 0U))  in HAL_USART_Transmit_DMA()
1431     if (husart->hdmatx != NULL)  in HAL_USART_Transmit_DMA()
1503     if ((pRxData == NULL) || (Size == 0U))  in HAL_USART_Receive_DMA()
1519     if (husart->hdmarx != NULL)  in HAL_USART_Receive_DMA()
1542       if (husart->hdmatx != NULL)  in HAL_USART_Receive_DMA()
1544         husart->hdmatx->XferErrorCallback = NULL;  in HAL_USART_Receive_DMA()
1545         husart->hdmatx->XferHalfCpltCallback = NULL;  in HAL_USART_Receive_DMA()
1546         husart->hdmatx->XferCpltCallback = NULL;  in HAL_USART_Receive_DMA()
1577       if (husart->hdmarx != NULL)  in HAL_USART_Receive_DMA()
1624     if ((pTxData == NULL) || (pRxData == NULL) || (Size == 0U))  in HAL_USART_TransmitReceive_DMA()
1640     if ((husart->hdmarx != NULL) && (husart->hdmatx != NULL))  in HAL_USART_TransmitReceive_DMA()
1705       if (husart->hdmarx != NULL)  in HAL_USART_TransmitReceive_DMA()
1844   if (husart->hdmatx != NULL)  in HAL_USART_DMAStop()
1858   if (husart->hdmarx != NULL)  in HAL_USART_DMAStop()
1903     if (husart->hdmatx != NULL)  in HAL_USART_Abort()
1907       husart->hdmatx->XferAbortCallback = NULL;  in HAL_USART_Abort()
1928     if (husart->hdmarx != NULL)  in HAL_USART_Abort()
1932       husart->hdmarx->XferAbortCallback = NULL;  in HAL_USART_Abort()
1998   if (husart->hdmatx != NULL)  in HAL_USART_Abort_IT()
2008       husart->hdmatx->XferAbortCallback = NULL;  in HAL_USART_Abort_IT()
2012   if (husart->hdmarx != NULL)  in HAL_USART_Abort_IT()
2022       husart->hdmarx->XferAbortCallback = NULL;  in HAL_USART_Abort_IT()
2033     if (husart->hdmatx != NULL)  in HAL_USART_Abort_IT()
2041         husart->hdmatx->XferAbortCallback = NULL;  in HAL_USART_Abort_IT()
2056     if (husart->hdmarx != NULL)  in HAL_USART_Abort_IT()
2064         husart->hdmarx->XferAbortCallback = NULL;  in HAL_USART_Abort_IT()
2135       if (husart->RxISR != NULL)  in HAL_USART_IRQHandler()
2214         if (husart->RxISR != NULL)  in HAL_USART_IRQHandler()
2237           if (husart->hdmatx != NULL)  in HAL_USART_IRQHandler()
2241             husart->hdmatx->XferAbortCallback = NULL;  in HAL_USART_IRQHandler()
2248           if (husart->hdmarx != NULL)  in HAL_USART_IRQHandler()
2309     if (husart->TxISR != NULL)  in HAL_USART_IRQHandler()
2755   husart->hdmatx->XferAbortCallback = NULL;  in USART_DMATxAbortCallback()
2758   if (husart->hdmarx != NULL)  in USART_DMATxAbortCallback()
2760     if (husart->hdmarx->XferAbortCallback != NULL)  in USART_DMATxAbortCallback()
2803   husart->hdmarx->XferAbortCallback = NULL;  in USART_DMARxAbortCallback()
2806   if (husart->hdmatx != NULL)  in USART_DMARxAbortCallback()
2808     if (husart->hdmatx->XferAbortCallback != NULL)  in USART_DMARxAbortCallback()
2965   husart->RxISR   = NULL;  in USART_SetConfig()
2966   husart->TxISR   = NULL;  in USART_SetConfig()
3194   husart->TxISR = NULL;  in USART_EndTransmit_IT()
3265       husart->RxISR = NULL;  in USART_RxISR_8BIT()
3358       husart->RxISR = NULL;  in USART_RxISR_16BIT()
3457           husart->RxISR = NULL;  in USART_RxISR_8BIT_FIFOEN()
3592           husart->RxISR = NULL;  in USART_RxISR_16BIT_FIFOEN()