spi: tegra: slink: do prepare dma transfer with DMA_CTRL_ACK flag
This reverts commit faa98f7ea6c720beec8a800c9ac6975f760467e2 which was
applied in error due to discussion ending up in the wrong thread.
diff --git a/drivers/spi/spi-tegra20-slink.c b/drivers/spi/spi-tegra20-slink.c
index 4e58b53..17224f0 100644
--- a/drivers/spi/spi-tegra20-slink.c
+++ b/drivers/spi/spi-tegra20-slink.c
@@ -467,7 +467,7 @@
INIT_COMPLETION(tspi->tx_dma_complete);
tspi->tx_dma_desc = dmaengine_prep_slave_single(tspi->tx_dma_chan,
tspi->tx_dma_phys, len, DMA_MEM_TO_DEV,
- DMA_PREP_INTERRUPT);
+ DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
if (!tspi->tx_dma_desc) {
dev_err(tspi->dev, "Not able to get desc for Tx\n");
return -EIO;
@@ -486,7 +486,7 @@
INIT_COMPLETION(tspi->rx_dma_complete);
tspi->rx_dma_desc = dmaengine_prep_slave_single(tspi->rx_dma_chan,
tspi->rx_dma_phys, len, DMA_DEV_TO_MEM,
- DMA_PREP_INTERRUPT);
+ DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
if (!tspi->rx_dma_desc) {
dev_err(tspi->dev, "Not able to get desc for Rx\n");
return -EIO;
