checkpatch: check CamelCase by word, not by $Lval

$Lval is a test for complete name (ie: foo->bar.Baz[1])

If any of this is CamelCase, then the current test uses the entire $Lval.
This isn't optimal because it can emit messages with foo->bar.Baz and
bar.Baz when Baz is a variable specified in an include file.

So instead, break the $Lval into words and check each word for CamelCase
uses.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 9 insertions, 5 deletions

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 9163651edc50..6b409b0ad457 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -3302,11 +3302,15 @@ sub process {
                             $var !~ /^(?:Clear|Set|TestClear|TestSet|)Page[A-Z]/ &&
 #Ignore SI style variants like nS, mV and dB (ie: max_uV, regulator_min_uA_show)
                             $var !~ /^(?:[a-z_]*?)_?[a-z][A-Z](?:_[a-z_]+)?$/) {
-                                seed_camelcase_includes() if ($check);
-                                if (!defined $camelcase{$var}) {
-                                        $camelcase{$var} = 1;
-                                        CHK("CAMELCASE",
-                                            "Avoid CamelCase: <$var>\n" . $herecurr);
+                                while ($var =~ m{($Ident)}g) {
+                                        my $word = $1;
+                                        next if ($word !~ /[A-Z][a-z]|[a-z][A-Z]/);
+                                        seed_camelcase_includes() if ($check);
+                                        if (!defined $camelcase{$word}) {
+                                                $camelcase{$word} = 1;
+                                                CHK("CAMELCASE",
+                                                    "Avoid CamelCase: <$word>\n" . $herecurr);
+                                        }
                                 }
                         }
                 }