On Wed, Jan 03, 2018 at 09:20:45AM -0800, Stephen Boyd wrote: > On 12/14/2017 09:34 AM, srinivas.kandagatla@xxxxxxxxxx wrote: > > uThis patch adds support to DB820c machine driver. > > + ret = dma_coerce_mask_and_coherent(card->dev, DMA_BIT_MASK(32)); > Why do we need to do this? Can you add some sort of comment in the code > about why? And why are we applying DMA restrictions in a machine driver?
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