On Thu, May 11, 2023, at 14:35, Geert Uytterhoeven wrote:

CC Artur, who's working on HP Jornada 680.

On Wed, May 10, 2023 at 5:55 PM Arnd Bergmann [off-list ref] wrote:

quoted

On Wed, May 10, 2023, at 16:27, Thomas Zimmermann wrote:

quoted

Am 10.05.23 um 16:15 schrieb Arnd Bergmann:

quoted

On Wed, May 10, 2023, at 16:03, kernel test robot wrote:

See also commit 4aafae27d0ce73f8 ("sh: hd64461 tidying."), which
claims they are no longer needed.

Don't the I/O port macros just treat the port as an absolute base address
when sh_io_port_base isn't set?

As far as I can tell, sh_io_port_base gets initialized to '-1'
specifically to prevent that from working by accident. So it's
almost treated as an absolute base address, but the off-by-one
offset ensures this never actually works unless it was first
set to the correct value.

      Arnd