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dmaengine: hsu: Support dmaengine_terminate_sync() 

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: b36f09c3c4 ("dmaengine: Add transfer termination synchronization support")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
hifive-unleashed-5.1
Andy Shevchenko 2018-07-10 14:49:08 +03:00 committed by Vinod Koul
parent ce397d215c
commit 2abc66cd49
1 changed files with 8 additions and 0 deletions
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8
drivers/dma/hsu/hsu.c
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@ -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;