On January 17, 2018 11:31:23 PM PST, Christoph Hellwig [off-list ref] wrote:

On Wed, Jan 17, 2018 at 08:15:33PM -0600, Rob Herring wrote:

quoted

quoted

(a) overriding/redefining the dma_to_phys() and phys_to_dma() calls
that are used by the dma_ops routines.  This is the approach of

        arch/mips/cavium-octeon/dma-octeon.c

MIPS is rarely an example to follow. :)

But in this case it actually is the example to follow as told
previously.

NAK again for these chained dma ops that only create problems.

Care to explain what should be done instead?

-- 
Florian