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Message-Id: <20220128185924.80137-1-joe@perches.com>
Date:   Fri, 28 Jan 2022 10:59:23 -0800
From:   Joe Perches <joe@...ches.com>
To:     Andrew Morton <akpm@...ux-foundation.org>,
        Andy Whitcroft <apw@...onical.com>,
        Dwaipayan Ray <dwaipayanray1@...il.com>,
        Lukas Bulwahn <lukas.bulwahn@...il.com>
Cc:     linux-kernel@...r.kernel.org
Subject: [PATCH 1/2] checkpatch: Prefer MODULE_LICENSE("GPL") over MODULE_LICENSE("GPL v2")

There is no effective difference.

Given the large number of uses of "GPL v2", emit this message only for
patches as a trivial treeside sed could be done one day.

Ref: commit bf7fbeeae6db ("module: Cure the MODULE_LICENSE "GPL" vs. "GPL v2" bogosity")

Signed-off-by: Joe Perches <joe@...ches.com>
---
 scripts/checkpatch.pl | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index b01c36a15d9dd..b7c181ea0ac56 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -7418,6 +7418,13 @@ sub process {
 				WARN("MODULE_LICENSE",
 				     "unknown module license " . $extracted_string . "\n" . $herecurr);
 			}
+			if (!$file && $extracted_string eq '"GPL v2"') {
+				if (WARN("MODULE_LICENSE",
+				     "Prefer \"GPL\" over \"GPL v2\" - see commit bf7fbeeae6db (\"module: Cure the MODULE_LICENSE \"GPL\" vs. \"GPL v2\" bogosity\")\n" . $herecurr) &&
+				    $fix) {
+					$fixed[$fixlinenr] =~ s/\bMODULE_LICENSE\s*\(\s*"GPL v2"\s*\)/MODULE_LICENSE("GPL")/;
+				}
+			}
 		}
 
 # check for sysctl duplicate constants
-- 
2.30.0

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