checkpatch: don't complain on _Generic() use

Improve CamelCase recognition logic to avoid reporting on
 _Generic() use.

Other C keywords, such as _Bool, are intentionally omitted, as those
should be rather avoided in new source code.

Reviewed-by: Wojciech Drewek <wojciech.drewek@intel.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: Mateusz Polchlopek <mateusz.polchlopek@intel.com>
Acked-by: Joe Perches <joe@perches.com>
Signed-off-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 9eed3683ad76caffbbb2418e5dbea7551d374406..a2066a6c9dd8bd3e3186a0e567b0948a90b225f3 100755 (executable)
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -5843,6 +5843,8 @@ sub process {
 #CamelCase
                        if ($var !~ /^$Constant$/ &&
                            $var =~ /[A-Z][a-z]|[a-z][A-Z]/ &&
+#Ignore C keywords
+                           $var !~ /^_Generic$/ &&
 #Ignore some autogenerated defines and enum values
                            $var !~ /^(?:[A-Z]+_){1,5}[A-Z]{1,3}[a-z]/ &&
 #Ignore Page<foo> variants