On Sat, 15 Apr 2023 04:17:19 -0700, Stanislav Kinsburskii wrote:

This series is aimed to address compilation warnings when a constant pointer
is passed to virt_to_phys and isa_virt_to_bus functions:

  warning: passing argument 1 of ‘virt_to_phys’ discards ‘const’ qualifier from pointer target type
  warning: passing argument 1 of ‘isa_virt_to_bus’ discards ‘const’ qualifier from pointer target type

The change(s) is the same for all architectures, but it's split into a series on
per-arch basis to simplify applying and testing on the maintainers side.

[...]

Patch 6 applied to powerpc/next.

[6/7] powerpc: asm/io.h: Expect immutable pointer in virt_to_phys prototype
      https://git.kernel.org/powerpc/c/b28d1ccf921a4333be14017d82066386d419e638

cheers