According to: https://spdx.org/ids-how, let's still allow QEMU to use the SPDX license identifier:
// SPDX-License-Identifier: *** Signed-off-by: Peter Xu <pet...@redhat.com> --- scripts/checkpatch.pl | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl index 88682cb0a9..c2aaf421da 100755 --- a/scripts/checkpatch.pl +++ b/scripts/checkpatch.pl @@ -1949,7 +1949,8 @@ sub process { } # no C99 // comments - if ($line =~ m{//}) { + if ($line =~ m{//} && + $rawline !~ m{// SPDX-License-Identifier: }) { ERROR("do not use C99 // comments\n" . $herecurr); } # Remove C99 comments. -- 2.17.1