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-rw-r--r--Documentation/SubmittingPatches4
-rwxr-xr-xscripts/checkpatch.pl9
2 files changed, 11 insertions, 2 deletions
diff --git a/Documentation/SubmittingPatches b/Documentation/SubmittingPatches
index 447671bd2927..b03a832a08e2 100644
--- a/Documentation/SubmittingPatches
+++ b/Documentation/SubmittingPatches
@@ -614,8 +614,8 @@ The canonical patch message body contains the following:
- An empty line.
- - The body of the explanation, which will be copied to the
- permanent changelog to describe this patch.
+ - The body of the explanation, line wrapped at 75 columns, which will
+ be copied to the permanent changelog to describe this patch.
- The "Signed-off-by:" lines, described above, which will
also go in the changelog.
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index c72e7ee1000b..9a8b2bd14dc2 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -1898,6 +1898,7 @@ sub process {
my $in_header_lines = $file ? 0 : 1;
my $in_commit_log = 0; #Scanning lines before patch
+ my $commit_log_long_line = 0;
my $reported_maintainer_file = 0;
my $non_utf8_charset = 0;
@@ -2233,6 +2234,14 @@ sub process {
"Remove Gerrit Change-Id's before submitting upstream.\n" . $herecurr);
}
+# Check for line lengths > 75 in commit log, warn once
+ if ($in_commit_log && !$commit_log_long_line &&
+ length($line) > 75) {
+ WARN("COMMIT_LOG_LONG_LINE",
+ "Possible unwrapped commit description (prefer a maximum 75 chars per line)\n" . $herecurr);
+ $commit_log_long_line = 1;
+ }
+
# Check for git id commit length and improperly formed commit descriptions
if ($in_commit_log && $line =~ /\b(c)ommit\s+([0-9a-f]{5,})/i) {
my $init_char = $1;