On Wed, Apr 08, 2020 at 01:53:23PM -0700, Nathan Chancellor wrote:
> When building with Clang + -Wtautological-compare and
> CONFIG_CPUMASK_OFFSTACK unset:
>
> arch/x86/mm/mmio-mod.c:375:6: warning: comparison of array 'downed_cpus'
> equal to a null pointer is alw
ommit f7e30f01a9e2 ("cpumask: Add helper cpumask_available()") added
cpumask_available to fix warnings of this nature. Use that here so that
clang does not warn regardless of CONFIG_CPUMASK_OFFSTACK's value.
Link: https://github.com/ClangBuiltLinux/linux/issues/982
Reported-by: Se
