scripts/checkkconfigsymbols.py: support default statements

Until now, checkkonfigsymbols.py did not check default statements for
references on missing Kconfig symbols (i.e., undefined Kconfig options).
Hence, add support to parse and check the Kconfig default statement.

Signed-off-by: Valentin Rothberg <valentinrothberg@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 7 insertions, 2 deletions

diff --git a/scripts/checkkconfigsymbols.py b/scripts/checkkconfigsymbols.py
index d89371cc9110..2f4b7ffd5570 100755
--- a/scripts/checkkconfigsymbols.py
+++ b/scripts/checkkconfigsymbols.py
@@ -20,18 +20,20 @@ OPERATORS = r"&|\(|\)|\||\!"
 FEATURE = r"(?:\w*[A-Z0-9]\w*){2,}"
 DEF = r"^\s*(?:menu){,1}config\s+(" + FEATURE + r")\s*"
 EXPR = r"(?:" + OPERATORS + r"|\s|" + FEATURE + r")+"
-STMT = r"^\s*(?:if|select|depends\s+on)\s+" + EXPR
+DEFAULT = r"default\s+.*?(?:if\s.+){,1}"
+STMT = r"^\s*(?:if|select|depends\s+on|(?:" + DEFAULT + r"))\s+" + EXPR
 SOURCE_FEATURE = r"(?:\W|\b)+[D]{,1}CONFIG_(" + FEATURE + r")"
 
 # regex objects
 REGEX_FILE_KCONFIG = re.compile(r".*Kconfig[\.\w+\-]*$")
-REGEX_FEATURE = re.compile(r"(" + FEATURE + r")")
+REGEX_FEATURE = re.compile(r'(?!\B"[^"]*)' + FEATURE + r'(?![^"]*"\B)')
 REGEX_SOURCE_FEATURE = re.compile(SOURCE_FEATURE)
 REGEX_KCONFIG_DEF = re.compile(DEF)
 REGEX_KCONFIG_EXPR = re.compile(EXPR)
 REGEX_KCONFIG_STMT = re.compile(STMT)
 REGEX_KCONFIG_HELP = re.compile(r"^\s+(help|---help---)\s*$")
 REGEX_FILTER_FEATURES = re.compile(r"[A-Za-z0-9]$")
+REGEX_NUMERIC = re.compile(r"0[xX][0-9a-fA-F]+|[0-9]+")
 
 
 def parse_options():
@@ -314,6 +316,9 @@ def parse_kconfig_file(kfile, defined_features, referenced_features):
                 line = line.strip('\n')
                 features.extend(get_features_in_line(line))
             for feature in set(features):
+                if REGEX_NUMERIC.match(feature):
+                    # ignore numeric values
+                    continue
                 paths = referenced_features.get(feature, set())
                 paths.add(kfile)
                 referenced_features[feature] = paths