On Tue, Jan 11, 2022 at 4:55 PM Rafael J. Wysocki <rjw@xxxxxxxxxxxxx> wrote: > > From: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx> > > To avoid "performing pointer subtraction with a null pointer has > undefined behavior" compiler warnings, use uintptr_t and offsetof() > that are always available during Linux kernel builds to define > acpi_uintptr_t and the ACPI_TO_INTEGER() and ACPI_OFFSET() macros. > > Based on earlier proposal from Arnd Bergmann. > > Link: https://lore.kernel.org/linux-acpi/20210927121338.938994-1-arnd@xxxxxxxxxx > Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx> Thanks for the follow-up. I can't easily test this at the moment, but it looks correct to me. I had a different approach that I had planned to eventually submit, but yours looks better anyway, so let's go with this. Reviewed-by: Arnd Bergmann <arnd@xxxxxxxx>
