On python3, Popen() universal_newlines=True converts the subprocess
stdout to unicode text using a codec based on user preferences. Given
LANG indicating ascii and utf-8 stdout from the subprocess, you'd get:
WARNING: kernel-doc '../scripts/kernel-doc -rst -enable-lineno
../drivers/media/dvb-core/demux.h' processing failed with: 'ascii' codec can't
decode byte 0xe2 in position 6368: ordinal not in range(128)
Fix this by dropping universal_newlines=True and replacing the implicit
LANG specific decode with an explicit utf-8 decode. This also gets rid
of the annoying conditional code for python 2 vs. 3.
Fixes: ba3501859354 ("Documentation/sphinx: fix kernel-doc extension on python3")
Reference: http://mid.mail-archive.com/54c23e8e-89c0-5cea-0dcc-e938952c5642@xxxxxxxxxxxxx
Reported-and-tested-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Cc: Jonathan Corbet <corbet@xxxxxxx>
Cc: Mauro Carvalho Chehab <mchehab@xxxxxxxxxxxxxxxx>
Signed-off-by: Jani Nikula <jani.nikula@xxxxxxxxx>
---
Documentation/sphinx/kerneldoc.py | 8 +++-----
1 file changed, 3 insertions(+), 5 deletions(-)
diff --git a/Documentation/sphinx/kerneldoc.py b/Documentation/sphinx/kerneldoc.py
index d15e07f36881..39aa9e8697cc 100644
--- a/Documentation/sphinx/kerneldoc.py
+++ b/Documentation/sphinx/kerneldoc.py
@@ -27,6 +27,7 @@
# Please make sure this works on both python2 and python3.
#
+import codecs
import os
import subprocess
import sys
@@ -88,13 +89,10 @@ class KernelDocDirective(Directive):
try:
env.app.verbose('calling kernel-doc \'%s\'' % (" ".join(cmd)))
- p = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE, universal_newlines=True)
+ p = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
out, err = p.communicate()
- # python2 needs conversion to unicode.
- # python3 with universal_newlines=True returns strings.
- if sys.version_info.major < 3:
- out, err = unicode(out, 'utf-8'), unicode(err, 'utf-8')
+ out, err = codecs.decode(out, 'utf-8'), codecs.decode(err, 'utf-8')
if p.returncode != 0:
sys.stderr.write(err)
--
2.11.0
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