[PATCH v5 4/4] crypto: Add Allwinner Security System crypto accelerator
herbert at gondor.apana.org.au
Mon Nov 3 02:35:28 PST 2014
On Mon, Nov 03, 2014 at 10:34:46AM +0100, Maxime Ripard wrote:
> What I mean is that since you are saying that drivers should do the
> kmap themselves, then *all* of the drivers are broken if they are not
> using it. And all of them are missing this kmap.
kmap is used by the software implementations to map the input/output
into virtual address space. Drivers typically use DMA and operate
on physical addresses so they don't need kmap.
Email: Herbert Xu <herbert at gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
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