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From 0ae3e11113b3132167308c26259f25b504da6ddc Mon Sep 17 00:00:00 2001
From: Robin Gong <yibin.gong@nxp.com>
Date: Tue, 24 Jul 2018 22:12:24 +0800
Subject: [PATCH] MLK-19022-2: dmaengine: fsl-edma-v3: add device_synchronize
Add device_synchronize for edma driver, since some driver such as
Audio need it to make sure dma done callback never come out after
resource related with dma channel free-ed by Audio driver. Android
team report such issue on MA-12087.
Signed-off-by: Robin Gong <yibin.gong@nxp.com>
(cherry picked from commit 483519c063b08fc1ce0dd297b6c186799cf639d6)
(cherry picked from commit 29ab274aca01ef8f5fc70e8c0a6d43a5bdb3c689)
---
drivers/dma/fsl-edma-v3.c | 8 ++++++++
1 file changed, 8 insertions(+)
--- a/drivers/dma/fsl-edma-v3.c
+++ b/drivers/dma/fsl-edma-v3.c
@@ -812,6 +812,13 @@ static void fsl_edma3_free_chan_resource
fsl_chan->used = false;
}
+static void fsl_edma3_synchronize(struct dma_chan *chan)
+{
+ struct fsl_edma3_chan *fsl_chan = to_fsl_edma3_chan(chan);
+
+ vchan_synchronize(&fsl_chan->vchan);
+}
+
static int fsl_edma3_probe(struct platform_device *pdev)
{
struct device_node *np = pdev->dev.of_node;
@@ -927,6 +934,7 @@ static int fsl_edma3_probe(struct platfo
fsl_edma3->dma_dev.device_resume = fsl_edma3_resume;
fsl_edma3->dma_dev.device_terminate_all = fsl_edma3_terminate_all;
fsl_edma3->dma_dev.device_issue_pending = fsl_edma3_issue_pending;
+ fsl_edma3->dma_dev.device_synchronize = fsl_edma3_synchronize;
fsl_edma3->dma_dev.src_addr_widths = FSL_EDMA_BUSWIDTHS;
fsl_edma3->dma_dev.dst_addr_widths = FSL_EDMA_BUSWIDTHS;
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