From: Andy Shevchenko andriy.shevchenko@linux.intel.com
[ Upstream commit bbacb8e78a3b29ebdbb6af7d54fcf25d3f1c248f ]
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/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;