The glibc library limits the return code to 8 bits. We need to stick to this limit when using sys.exit(error_count).

Signed-off-by: Mauro Carvalho Chehab mchehab+huawei@kernel.org Cc: stable@vger.kernel.org --- scripts/kernel-doc.py | 26 +++++++++++++++++++------- 1 file changed, 19 insertions(+), 7 deletions(-)

diff --git a/scripts/kernel-doc.py b/scripts/kernel-doc.py index 7a1eaf986bcd..5d2f29e90ebe 100755 --- a/scripts/kernel-doc.py +++ b/scripts/kernel-doc.py @@ -116,6 +116,8 @@ SRC_DIR = os.path.dirname(os.path.realpath(__file__))

sys.path.insert(0, os.path.join(SRC_DIR, LIB_DIR))

+WERROR_RETURN_CODE = 3 + DESC = """ Read C language source or header FILEs, extract embedded documentation comments, and print formatted documentation to standard output. @@ -176,7 +178,21 @@ class MsgFormatter(logging.Formatter): return logging.Formatter.format(self, record)

def main(): - """Main program""" + """ + Main program + By default, the return value is: + + - 0: parsing warnings or Python version is not compatible with + kernel-doc. The rationale for the latter is to not break Linux + compilation on such cases; + + - 1: an abnormal condition happened; + + - 2: arparse issued an error; + + - 3: -Werror is used, and one or more unfiltered parse warnings + happened. + """

parser = argparse.ArgumentParser(formatter_class=argparse.RawTextHelpFormatter, description=DESC) @@ -323,16 +339,12 @@ def main():

if args.werror: print("%s warnings as errors" % error_count) # pylint: disable=C0209 - sys.exit(error_count) + sys.exit(WERROR_RETURN_CODE)

if args.verbose: print("%s errors" % error_count) # pylint: disable=C0209

- if args.none: - sys.exit(0) - - sys.exit(error_count) - + sys.exit(0)

# Call main method if __name__ == "__main__":