Messages in this thread | | | From | Arnd Bergmann <> | Subject | Re: [PATCH 6/9] crypto: ux500/cryp - Set DMA configuration though dma_slave_config() | Date | Fri, 26 Apr 2013 11:39:20 +0200 |
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On Friday 26 April 2013 13:46:46 Vinod Koul wrote: > > The mapping & unmapping of dma buffer (memcpy and memory buffer in this txn) is > required to be performed by the client driver. The dmanegine or dmaengine driver > will not do that for you...
I've been wondering about this part: since we need to pass the 'struct device' of the dma engine (rather than the slave) into dma_map_single, what is the official way to do that? Should the slave driver just rely on dma_chan->device->dev to work correctly for the purpose of dma-mapping.h interfaces?
Arnd
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