linux-kernel - [PATCH] checkpatch: Don't show signatures in git-log

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Date:   Tue,  6 Jul 2021 15:30:29 -0700
From:   Palmer Dabbelt <palmer@...belt.com>
To:        linux-kernel@...r.kernel.org
Cc:     apw@...onical.com, joe@...ches.com, dwaipayanray1@...il.com,
        lukas.bulwahn@...il.com, linux-kernel@...r.kernel.org,
        kernel-team@...roid.com, Palmer Dabbelt <palmerdabbelt@...gle.com>
Subject: [PATCH] checkpatch: Don't show signatures in git-log

From: Palmer Dabbelt <palmerdabbelt@...gle.com>

I have git-log setup to show signatures.  I've recently noticed this
breaking checkpatch error messages, which show something like

    ERROR: Please use git commit description style 'commit <12+ chars of sha1> ("<title line>")' - ie: 'commit gpg: Signatu (":05 PM PDT")'
    #8:
    the module region by 3a02764c372c ("riscv: Ensure BPF_JIT_REGION_START

instead of something more helpful, like

    ERROR: Please use git commit description style 'commit <12+ chars of sha1> ("<title line>")' - ie: 'commit 3a02764c372c ("riscv: Ensure BPF_JIT_REGION_START aligned with PMD size")'
    #8:
    the module region by 3a02764c372c ("riscv: Ensure BPF_JIT_REGION_START

which shows up with this patch.  I'm not sure if these just started
showing up for if I just noticed them or if they've been around forever.

I've only found it necessary to add --no-show-signature to the git-log
invocation in git_commit_info(), but a cursory glance indicates that the
other two invocations may suffer from similar problems so I've just
added it everywhere.

Signed-off-by: Palmer Dabbelt <palmerdabbelt@...gle.com>
---
 scripts/checkpatch.pl | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 461d4221e4a4..4df508b4915d 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -1103,7 +1103,7 @@ sub seed_camelcase_includes {
 	$camelcase_seeded = 1;
 
 	if (-e "$gitroot") {
-		my $git_last_include_commit = `${git_command} log --no-merges --pretty=format:"%h%n" -1 -- include`;
+		my $git_last_include_commit = `${git_command} log --no-show-signature --no-merges --pretty=format:"%h%n" -1 -- include`;
 		chomp $git_last_include_commit;
 		$camelcase_cache = ".checkpatch-camelcase.git.$git_last_include_commit";
 	} else {
@@ -1165,7 +1165,7 @@ sub git_commit_info {
 
 	return ($id, $desc) if ((which("git") eq "") || !(-e "$gitroot"));
 
-	my $output = `${git_command} log --no-color --format='%H %s' -1 $commit 2>&1`;
+	my $output = `${git_command} log --no-color --no-show-signature --format='%H %s' -1 $commit 2>&1`;
 	$output =~ s/^\s*//gm;
 	my @lines = split("\n", $output);
 
@@ -1215,7 +1215,7 @@ if ($git) {
 		} else {
 			$git_range = "-1 $commit_expr";
 		}
-		my $lines = `${git_command} log --no-color --no-merges --pretty=format:'%H %s' $git_range`;
+		my $lines = `${git_command} log --no-show-signature --no-color --no-merges --pretty=format:'%H %s' $git_range`;
 		foreach my $line (split(/\n/, $lines)) {
 			$line =~ /^([0-9a-fA-F]{40,40}) (.*)$/;
 			next if (!defined($1) || !defined($2));
-- 
2.32.0.93.g670b81a890-goog