linux-kernel - checkpatch: GIT_COMMIT_ID rule catches 'cherry picked from commit <sha1>' lines

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Message-ID: <CALaWCOOV7EQPQDAJ4y5QmUtj=VqCCh+HOXwgLiPf3QBA3vOB=A@mail.gmail.com>
Date:	Wed, 25 Nov 2015 18:15:53 -0800
From:	Shawn N <shawnn@...omium.org>
To:	joe@...ches.com
Cc:	linux-kernel@...r.kernel.org
Subject: checkpatch: GIT_COMMIT_ID rule catches 'cherry picked from commit
 <sha1>' lines

Hello,

The checkpatch.pl GIT_COMMIT_ID rule appears to be designed to enforce
a minimum description when citing patches: 'commit <12+ chars of sha1>
(\"<title line>\")'. One (unintended?) consequence of this rule is
that unmodified 'cherry picked from commit <sha1>' (git cherry-pick
-x) lines are flagged.

- Is the disallowing of 'cherry picked from commit <sha1>' lines by
GIT_COMMIT_ID working as intended?
- If yes, would it be acceptable to instead add a new rule with
clearer error output ("Don't include git cherry-pick -x description
lines")?
- If no (and such lines are actually acceptable) then I will just
patch the GIT_COMMIT_ID rule.

Thanks,

Shawn
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