checkpatch.pl: don't complain about old lines with tabs

Don't complain when the patch includes lines with tabs
only in the hunk's untouched context.

Signed-off-by: Blue Swirl <blauwirbel@gmail.com>

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 4fa06c002ec14d10f26dbd8a3410018056a2dc49..075b6149a3dc21cb4abff4b4a04a08bce967e159 100755 (executable)
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -1495,7 +1495,7 @@ sub process {
                next if ($realfile !~ /\.(h|c|pl)$/);
 
 # in QEMU, no tabs are allowed
-               if ($rawline =~ /\t/) {
+               if ($rawline =~ /^\+.*\t/) {
                        my $herevet = "$here\n" . cat_vet($rawline) . "\n";
                        ERROR("code indent should never use tabs\n" . $herevet);
                        $rpt_cleaners = 1;