checkpatch: fix unescaped left brace

There is an unescaped left brace in a regex in OPEN_BRACE check.  This
throws a runtime error when checkpatch is run with --fix flag and the
OPEN_BRACE check is executed.

Fix it by escaping the left brace.

Link: https://lkml.kernel.org/r/20201115202928.81955-1-dwaipayanray1@gmail.com
Fixes: 8d1824780f2f ("checkpatch: add --fix option for a couple OPEN_BRACE misuses")
Signed-off-by: Dwaipayan Ray <dwaipayanray1@gmail.com>
Acked-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 176ea2c..fdfd5ec 100755 (executable)
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -4505,7 +4505,7 @@ sub process {
                            $fix) {
                                fix_delete_line($fixlinenr, $rawline);
                                my $fixed_line = $rawline;
-                               $fixed_line =~ /(^..*$Type\s*$Ident\(.*\)\s*){(.*)$/;
+                               $fixed_line =~ /(^..*$Type\s*$Ident\(.*\)\s*)\{(.*)$/;
                                my $line1 = $1;
                                my $line2 = $2;
                                fix_insert_line($fixlinenr, ltrim($line1));