[PATCH 1/2] checkpatch: Improve patch recognition

[Joe Perches]

There are mode change and rename only patches that are unrecognized
by checkpatch.

Recognize them.

Reported-by: Heinrich Schuchardt <xypron.glpk@xxxxxx>
Signed-off-by: Joe Perches <joe@xxxxxxxxxxx>
---
 scripts/checkpatch.pl | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index baddac9379f0..61849a4d7132 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -2375,6 +2375,14 @@ sub process {
 
 		my $rawline = $rawlines[$linenr - 1];
 
+# check if it's a mode change, rename or start of a patch
+		if (!$in_commit_log &&
+		    ($line =~ /^ mode change [0-7]+ => [0-7]+ \S+\s*$/ ||
+		    ($line =~ /^rename (?:from|to) \S+\s*$/ ||
+		     $line =~ /^diff --git a\/[\w\/\.\_\-]+ b\/\S+\s*$/)) {
+			$is_patch = 1;
+		}
+
 #extract the line range in the file after the patch is applied
 		if (!$in_commit_log &&
 		    $line =~ /^\@\@ -\d+(?:,\d+)? \+(\d+)(,(\d+))? \@\@(.*)/) {
-- 
2.15.0