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@xxxxxxxxxxxxxxx>
---
Fixes tag is just an anchor for anyone who would like to see this change
backported.
drivers/dma/hsu/hsu.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/dma/hsu/hsu.c b/drivers/dma/hsu/hsu.c
index 29d04ca71d52..202ffa9f7611 100644
--- a/drivers/dma/hsu/hsu.c
+++ b/drivers/dma/hsu/hsu.c
@@ -413,6 +413,13 @@ static void hsu_dma_free_chan_resources(struct dma_chan *chan)
vchan_free_chan_resources(to_virt_chan(chan));
}
+static void hsu_dma_synchronize(struct dma_chan *chan)
+{
+ struct hsu_dma_chan *hsuc = to_hsu_dma_chan(chan);
+
+ vchan_synchronize(&hsuc->vchan);
+}
+
int hsu_dma_probe(struct hsu_dma_chip *chip)
{
struct hsu_dma *hsu;
@@ -459,6 +466,7 @@ int hsu_dma_probe(struct hsu_dma_chip *chip)
hsu->dma.device_pause = hsu_dma_pause;
hsu->dma.device_resume = hsu_dma_resume;
hsu->dma.device_terminate_all = hsu_dma_terminate_all;
+ hsu->dma.device_synchronize = hsu_dma_synchronize;
hsu->dma.src_addr_widths = HSU_DMA_BUSWIDTHS;
hsu->dma.dst_addr_widths = HSU_DMA_BUSWIDTHS;
--
2.18.0
--
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