CHECK: Alignment should match open parenthesis
CHECK: Comparison to NULL could be written "!hnode->uexit_pid_hlist.next"
CHECK: Please use a blank line after function/struct/union/enum declarations
CHECK: Unnecessary parentheses around 'key_display[key] != 1'
CHECK: extern prototypes should be avoided in .h files
WARNING: added, moved or deleted file(s), does MAINTAINERS need updating?