According to a commit from kernel 4.18-rc3, it's not valid to use "cpu_mask_all" for clock events and it should be replaced in favor of "cpu_possible_mask" [1] This warning was seen when booting kernel 4.19 on a cns3xxx board. Let's fix it also here just to be safe. [1] https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v4.19.18&id=fbfa9260085b5b578a049a90135e5c51928c5f7f Signed-off-by: Koen Vandeputte <koen.vandeputte@ncentric.com>