1 files changed, 4 insertions, 4 deletions

diff --git a/drivers/spi/atmel_spi.c b/drivers/spi/atmel_spi.c
index 1d8a2f6bb8eb..8b2601de3630 100644
--- a/drivers/spi/atmel_spi.c
+++ b/drivers/spi/atmel_spi.c
@@ -113,16 +113,16 @@ static void atmel_spi_next_xfer(struct spi_master *master,
 
         len = as->remaining_bytes;
 
-        tx_dma = xfer->tx_dma;
-        rx_dma = xfer->rx_dma;
+        tx_dma = xfer->tx_dma + xfer->len - len;
+        rx_dma = xfer->rx_dma + xfer->len - len;
 
         /* use scratch buffer only when rx or tx data is unspecified */
-        if (rx_dma == INVALID_DMA_ADDRESS) {
+        if (!xfer->rx_buf) {
                 rx_dma = as->buffer_dma;
                 if (len > BUFFER_SIZE)
                         len = BUFFER_SIZE;
         }
-        if (tx_dma == INVALID_DMA_ADDRESS) {
+        if (!xfer->tx_buf) {
                 tx_dma = as->buffer_dma;
                 if (len > BUFFER_SIZE)
                         len = BUFFER_SIZE;