From bbacb8e78a3b29ebdbb6af7d54fcf25d3f1c248f Mon Sep 17 00:00:00 2001

From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

Date: Tue, 10 Jul 2018 14:49:42 +0300

Subject: [PATCH] dmaengine: idma64: Support dmaengine_terminate_sync()

Git-commit: bbacb8e78a3b29ebdbb6af7d54fcf25d3f1c248f

Patch-mainline: v4.19-rc1

References: bsc#1051510

It appears that the driver misses the support of dmaengine_terminate_sync().

Since many of callers expects this behaviour implement the new

device_synchronize() callback to allow proper synchronization when stopping

a channel.

Fixes: b36f09c3c441 ("dmaengine: Add transfer termination synchronization support")

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

Signed-off-by: Vinod Koul <vkoul@kernel.org>

Acked-by: Takashi Iwai <tiwai@suse.de>

---

 drivers/dma/idma64.c | 8 ++++++++

 1 file changed, 8 insertions(+)

diff --git a/drivers/dma/idma64.c b/drivers/dma/idma64.c

index e5c911200bdb..1fbf9cb9b742 100644

--- a/drivers/dma/idma64.c

+++ b/drivers/dma/idma64.c

@@ -496,6 +496,13 @@ static int idma64_terminate_all(struct dma_chan *chan)

 	return 0;

 }

+static void idma64_synchronize(struct dma_chan *chan)

+{

+	struct idma64_chan *idma64c = to_idma64_chan(chan);

+

+	vchan_synchronize(&idma64c->vchan);

+}

+

 static int idma64_alloc_chan_resources(struct dma_chan *chan)

 {

 	struct idma64_chan *idma64c = to_idma64_chan(chan);

@@ -583,6 +590,7 @@ static int idma64_probe(struct idma64_chip *chip)

 	idma64->dma.device_pause = idma64_pause;

 	idma64->dma.device_resume = idma64_resume;

 	idma64->dma.device_terminate_all = idma64_terminate_all;

+	idma64->dma.device_synchronize = idma64_synchronize;

 	idma64->dma.src_addr_widths = IDMA64_BUSWIDTHS;

 	idma64->dma.dst_addr_widths = IDMA64_BUSWIDTHS;

-- 

2.18.0