From: Andy Shevchenko andriy.shevchenko@linux.intel.com
[ Upstream commit 2abc66cd499aa16876e45c6438788902f7d1ce22 ]
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 Signed-off-by: Sasha Levin alexander.levin@microsoft.com --- 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;