[Qemu-block] [PULL 4/8] checkpatch: ignore email headers better

[Stefan Hajnoczi]

From: Joe Perches <address@hidden>

There are some patches created by git format-patch that when scanned by
checkpatch report errors on lines like

To:     address.tld

This is a checkpatch false positive.

Improve the logic a bit to ignore folded email headers to avoid emitting
these messages.

Signed-off-by: Joe Perches <address@hidden>
Signed-off-by: Andrew Morton <address@hidden>
Signed-off-by: Linus Torvalds <address@hidden>
Reviewed-by: Markus Armbruster <address@hidden>
Reviewed-by: Thomas Huth <address@hidden>
Signed-off-by: Stefan Hajnoczi <address@hidden>
Message-id: address@hidden
(cherry picked from commit 29ee1b0c67e0dd7dea8dd718e8326076bce5b6fe)
Signed-off-by: Stefan Hajnoczi <address@hidden>
Reviewed-by: Thomas Huth <address@hidden>
Signed-off-by: Stefan Hajnoczi <address@hidden>
---
 scripts/checkpatch.pl | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 25bf43bad0..20d5b62586 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -1183,7 +1183,7 @@ sub process {
        my $signoff = 0;
        my $is_patch = 0;
 
-       my $in_header_lines = 1;
+       my $in_header_lines = $file ? 0 : 1;
        my $in_commit_log = 0;          #Scanning lines before patch
 
        my $non_utf8_charset = 0;
@@ -1411,7 +1411,8 @@ sub process {
 # Check if it's the start of a commit log
 # (not a header line and we haven't seen the patch filename)
                if ($in_header_lines && $realfile =~ /^$/ &&
-                   $rawline !~ /^(commit\b|from\b|\w+:).+$/i) {
+                   !($rawline =~ /^\s+\S/ ||
+                     $rawline =~ /^(commit\b|from\b|[\w-]+:).*$/i)) {
                        $in_header_lines = 0;
                        $in_commit_log = 1;
                }
-- 
2.17.0