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-rw-r--r--drivers/spi/atmel_spi.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/spi/atmel_spi.c b/drivers/spi/atmel_spi.c
index 1d8a2f6bb8e..8b2601de363 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;