On Wed, Jan 12, 2022 at 9:45 AM Arnd Bergmann <arnd@xxxxxxxxxx> wrote: > > 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> Thank you, I've applied this patch as 5.18 material. A pull request for the analogous change in the upstream code base has been submitted and Bob is going to take it AFAICS.
