On Tue, Jan 7, 2020 at 5:54 PM Krzysztof Kozlowski [off-list ref] wrote:

The ioreadX() helpers have inconsistent interface.  On some architectures
void *__iomem address argument is a pointer to const, on some not.

Implementations of ioreadX() do not modify the memory under the
address so they can be converted to a "const" version for const-safety
and consistency among architectures.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>

The patch looks correct, but I would not bother here, as it has no
effect on the compiler or its output.

      Arnd