u-boot/scripts/checkpatch.pl

74   --patch                    treat FILE as patchfile (default)
101                              'values', 'possible', 'type', and 'attr' (default
116                              (default:/usr/share/codespell/dictionary.txt)
120                              is a terminal ('auto'). Default is 'auto'.
411 our $c90_Keywords = qr{do|for|while|if|else|return|goto|continue|switch|default|case|break}x;
3408 # Check for switch () and associated case and default
3417 				if ($ctx =~ /^\+\s*(case\s+|default:)/ &&
4596 		   !($line=~/^. [A-Za-z\d_]+:/) and !($line=~/^.\s+default:/)) {
4784 # case and default should not have general statements after them
4785 		if ($line =~ /^.\s*(?:case\s*.*|default\s*):/g &&
6171 # check for case / default statements not preceded by break/fallthrough/switch
6172 		if ($line =~ /^.\s*(?:case\s+(?:$Ident|$Constant)\s*|default):/) {
6183 				next if ($fline =~ /^.(?:\s*(?:case\s+(?:$Ident|$Constant)[\s$;]*|default):[\s$;]*)*$/);
6192 				     "Possible switch case/default not preceded by break or fallthrough comment\n" . $herecurr);
6196 # check for switch/default statements without a break;
6204 			     "switch default: should use break\n" . $herectx);
6403 #   use the default permissions