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From: Jani Nikula <jani.nikula@intel.com>
To: Jonathan Corbet <corbet@lwn.net>
Cc: Jani Nikula <jani.nikula@intel.com>,
        Markus Heiser <markus.heiser@darmarit.de>,
        Daniel Vetter <daniel.vetter@ffwll.ch>,
        Grant Likely <grant.likely@secretlab.ca>,
        Mauro Carvalho Chehab <mchehab@osg.samsung.com>,
        Keith Packard <keithp@keithp.com>, LKML <linux-kernel@vger.kernel.org>,
        linux-doc@vger.kernel.org, Hans Verkuil <hverkuil@xs4all.nl>
Subject: [PATCH v2 01/38] kernel-doc/rst: fix use of uninitialized value
Date: Sat,  4 Jun 2016 14:37:02 +0300
Message-Id: <5e64fa9c441ff273f39527f4014d3c3e724d321a.1465031816.git.jani.nikula@intel.com>
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I'm not quite sure why the errors below are happening, but this fixes
them.

Use of uninitialized value in string ne at ./scripts/kernel-doc line 1819, <IN> line 6494.
Use of uninitialized value $_[0] in join or string at ./scripts/kernel-doc line 1759, <IN> line 6494.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
---
 scripts/kernel-doc | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/scripts/kernel-doc b/scripts/kernel-doc
index 2fc8fad5195e..babb374c043d 100755
--- a/scripts/kernel-doc
+++ b/scripts/kernel-doc
@@ -1803,7 +1803,8 @@ sub output_function_rst(%) {
 	} else {
 	    print "      ``$parameter``\n";
 	}
-	if ($args{'parameterdescs'}{$parameter_name} ne $undescribed) {
+	if (defined($args{'parameterdescs'}{$parameter_name}) &&
+	    $args{'parameterdescs'}{$parameter_name} ne $undescribed) {
 	    my $oldprefix = $lineprefix;
 	    $lineprefix = "        ";
 	    output_highlight_rst($args{'parameterdescs'}{$parameter_name});
-- 
2.1.4