[PATCH] dmaengine: fsl-edma: implement .device_synchronize callback

[Andrey Smirnov]

Implement .device_synchronize callback in order to be able to use
dmaengine_terminate_sync() and other primitives relying on said
callback.

Signed-off-by: Andrey Smirnov <andrew.smir...@gmail.com>
Cc: Stefan Agner <ste...@agner.ch>
Cc: Chris Healy <cphe...@gmail.com>
Cc: Vinod Koul <vk...@kernel.org>
Cc: linux-...@nxp.com
Cc: dmaeng...@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
---
 drivers/dma/fsl-edma.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/dma/fsl-edma.c b/drivers/dma/fsl-edma.c
index fcbad6ae954a..191fa71f67a3 100644
--- a/drivers/dma/fsl-edma.c
+++ b/drivers/dma/fsl-edma.c
@@ -20,6 +20,13 @@
 
 #include "fsl-edma-common.h"
 
+static void fsl_edma_synchronize(struct dma_chan *chan)
+{
+       struct fsl_edma_chan *fsl_chan = to_fsl_edma_chan(chan);
+
+       vchan_synchronize(&fsl_chan->vchan);
+}
+
 static irqreturn_t fsl_edma_tx_handler(int irq, void *dev_id)
 {
        struct fsl_edma_engine *fsl_edma = dev_id;
@@ -302,6 +309,7 @@ static int fsl_edma_probe(struct platform_device *pdev)
        fsl_edma->dma_dev.device_pause = fsl_edma_pause;
        fsl_edma->dma_dev.device_resume = fsl_edma_resume;
        fsl_edma->dma_dev.device_terminate_all = fsl_edma_terminate_all;
+       fsl_edma->dma_dev.device_synchronize = fsl_edma_synchronize;
        fsl_edma->dma_dev.device_issue_pending = fsl_edma_issue_pending;
 
        fsl_edma->dma_dev.src_addr_widths = FSL_EDMA_BUSWIDTHS;
-- 
2.21.0