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Message-ID: <1428345795-28255-1-git-send-email-bjorn.andersson@sonymobile.com>
Date:	Mon, 6 Apr 2015 11:43:15 -0700
From:	Bjorn Andersson <bjorn.andersson@...ymobile.com>
To:	Andy Whitcroft <apw@...onical.com>, Joe Perches <joe@...ches.com>
CC:	<linux-kernel@...r.kernel.org>
Subject: [PATCH] checkpatch: validate MODULE_LICENSE content

There is a well defined list of expected values for MODULE_LICENSE so
warn the user upon usage of unknown values.

Signed-off-by: Bjorn Andersson <bjorn.andersson@...ymobile.com>
---
 scripts/checkpatch.pl | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index d124359..7087b28 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -5354,6 +5354,22 @@ sub process {
 				}
 			}
 		}
+
+		if ($line =~ /MODULE_LICENSE\(($String)\)/) {
+			my $extracted_string = get_quoted_string($line, $rawline);
+			my $valid_licenses = qr{
+						GPL|
+						GPL\ v2|
+						GPL\ and\ additional\ rights|
+						Dual\ BSD/GPL|
+						Dual\ MIT/GPL|
+						Dual\ MPL/GPL|
+						Proprietary
+					}x;
+			if ($extracted_string !~ /^"(?:$valid_licenses)"$/x) {
+				WARN("MODULE_LICENSE", "unknown module license " . $extracted_string . "\n" . $herecurr);
+			}
+		}
 	}
 
 	# If we have no input at all, then there is nothing to report on
-- 
1.8.2.2

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