[PATCH 04/10] dma: imx-sdma: update sdma channel status for cyclic dma

From: Jiada Wang
Date: Mon May 16 2016 - 23:51:16 EST


Previously for cyclic dma mode, once sdma fails sdma channel status will
be set to DMA_ERROR, unless the transfer is prepared again, sdmac status
will always be kept to DMA_ERROR, even the transfer for following buffers
is successful.

This patch updates sdmac status to the status of current buffer descriptor.

Signed-off-by: Jiada Wang <jiada_wang@xxxxxxxxxx>
---
drivers/dma/imx-sdma.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c
index 1489de0..36f5e39 100644
--- a/drivers/dma/imx-sdma.c
+++ b/drivers/dma/imx-sdma.c
@@ -670,6 +670,8 @@ static void sdma_handle_channel_loop(struct sdma_channel *sdmac)

if (bd->mode.status & BD_RROR)
sdmac->status = DMA_ERROR;
+ else
+ sdmac->status = DMA_IN_PROGRESS;

bd->mode.status &= ~BD_RROR;
bd->mode.status |= BD_DONE;
--
2.4.5