Hi Jens, I hope you are well :-) Please accept the following patch from Chen Ni that removes an unnecessary NULL check in cdrom_sysctl_unregister. I have verified the necessary check is being done inside unregister_sysctl_table myself, and indeed a number of other module_exit routines take this same approach. Many thanks in advance. Regards, Phil Chen Ni (1): cdrom: Remove unnecessary NULL check before unregister_sysctl_table() drivers/cdrom/cdrom.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) -- 2.49.0