When checkpatch.pl is invoked with "--ignore C99_COMMENT_TOLERANCE", it reports C99-style comments found in the code, by matching on the double-slash pattern "//". This includes the leading slashes before the SPDX tags that are now used in a majority of C files.
Such tags are commented with the double-slash on purpose, and should not trigger errors from checkpatch. Let's ignore them when searching for C99-style comments to report. Signed-off-by: Quentin Monnet <quen...@isovalent.com> --- scripts/checkpatch.pl | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl index 3cacc122c528..67f350c580ea 100755 --- a/scripts/checkpatch.pl +++ b/scripts/checkpatch.pl @@ -3983,7 +3983,10 @@ sub process { } # no C99 // comments - if ($line =~ m{//}) { + if ($line =~ m{//} && + !($rawline =~ m{// SPDX-License-Identifier:} && + $realfile =~ /\.c$/ && + $realline == $checklicenseline)) { if (ERROR("C99_COMMENTS", "do not use C99 // comments\n" . $herecurr) && $fix) { -- 2.20.1