powerpc/smp: Use IS_ENABLED() to avoid #ifdef Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> ...kernel.org/r/20200313112020.28235-2-mpe@ellerman.id.au
powerpc/smp: Drop superfluous NULL check Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> ...kernel.org/r/20200313112020.28235-1-mpe@ellerman.id.au