If Kconfig help text contains a single quote (e.g., can't),
checkpatch replaces all characters with X until another quote
appears in some later help text. This interferes with processing
keywords.

Don't sanitise lines if the file is a Kconfig file.

Signed-off-by: Robert Elliott <elliott@hpe.com>
---
 scripts/checkpatch.pl | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 1d9e563e768a..c907d5cf0ac8 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -2715,9 +2715,15 @@ sub process {
 			sanitise_line_reset($in_comment);
 
 		} elsif ($realcnt && $rawline =~ /^(?:\+| |$)/) {
-			# Standardise the strings and chars within the input to
-			# simplify matching -- only bother with positive lines.
-			$line = sanitise_line($rawline);
+			if (($realfile =~ /Kconfig/) ||
+			    (!$is_patch && $filename =~ /Kconfig/)) {
+				# Kconfig help text is free to use unmatched quotes
+				$line = $rawline;
+			} else {
+				# Standardise the strings and chars within the input to
+				# simplify matching -- only bother with positive lines.
+				$line = sanitise_line($rawline);
+			}
 		}
 		push(@lines, $line);
 
-- 
2.38.1