[PATCH 04/10] spi: dw-mid: follow new DMAengine workflow

[Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>]

Though intel-mid-dma does not follow a new DMA workflow let's prepare SPI DW
driver for that.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
---
 drivers/spi/spi-dw-mid.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/spi/spi-dw-mid.c b/drivers/spi/spi-dw-mid.c
index 27150c7..a62413d 100644
--- a/drivers/spi/spi-dw-mid.c
+++ b/drivers/spi/spi-dw-mid.c
@@ -152,7 +152,7 @@ static int mid_spi_dma_transfer(struct dw_spi *dws, int cs_change)
 				&dws->tx_sgl,
 				1,
 				DMA_MEM_TO_DEV,
-				DMA_PREP_INTERRUPT);
+				DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
 	txdesc->callback = dw_spi_dma_done;
 	txdesc->callback_param = dws;
 
@@ -175,13 +175,17 @@ static int mid_spi_dma_transfer(struct dw_spi *dws, int cs_change)
 				&dws->rx_sgl,
 				1,
 				DMA_DEV_TO_MEM,
-				DMA_PREP_INTERRUPT);
+				DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
 	rxdesc->callback = dw_spi_dma_done;
 	rxdesc->callback_param = dws;
 
 	/* rx must be started before tx due to spi instinct */
 	rxdesc->tx_submit(rxdesc);
 	txdesc->tx_submit(txdesc);
+
+	dma_async_issue_pending(rxchan);
+	dma_async_issue_pending(txchan);
+
 	return 0;
 }
 
-- 
2.1.0

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