checkpatch: fix left brace warning

using checkpatch with Perl 5.22.0 generates a warning,
this is fixed in linux through commit:

commit 4e5d56bdf892e18832a6540b63ebf709966bce2a
Author: Eddie Kovsky <ewk@edkovsky.org>
Date:   Wed Sep 9 15:37:52 2015 -0700

checkpatch: fix left brace warning

Using checkpatch.pl with Perl 5.22.0 generates the following warning:

Unescaped left brace in regex is deprecated, passed through in regex;

This patch fixes the warnings by escaping occurrences of the left brace
inside the regular expression.

Adapt it for U-Boot.

Signed-off-by: Heiko Schocher <hs@denx.de>

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 74db2e2..24831b3 100755 (executable)
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -2825,8 +2825,8 @@ sub process {
 
 # function brace can't be on same line, except for #defines of do while,
 # or if closed on same line
-               if (($line=~/$Type\s*$Ident\(.*\).*\s{/) and
-                   !($line=~/\#\s*define.*do\s{/) and !($line=~/}/)) {
+               if (($line=~/$Type\s*$Ident\(.*\).*\s\{/) and
+                   !($line=~/\#\s*define.*do\s\{/) and !($line=~/}/)) {
                        ERROR("OPEN_BRACE",
                              "open brace '{' following function declarations go on the next line\n" . $herecurr);
                }
@@ -3259,8 +3259,8 @@ sub process {
 ##             }
 
 #need space before brace following if, while, etc
-               if (($line =~ /\(.*\){/ && $line !~ /\($Type\){/) ||
-                   $line =~ /do{/) {
+               if (($line =~ /\(.*\)\{/ && $line !~ /\($Type\){/) ||
+                   $line =~ /do\{/) {
                        if (ERROR("SPACING",
                                  "space required before the open brace '{'\n" . $herecurr) &&
                            $fix) {
@@ -3633,7 +3633,7 @@ sub process {
                            $dstat !~ /^for\s*$Constant$/ &&                            # for (...)
                            $dstat !~ /^for\s*$Constant\s+(?:$Ident|-?$Constant)$/ &&   # for (...) bar()
                            $dstat !~ /^do\s*{/ &&                                      # do {...
-                           $dstat !~ /^\({/ &&                                         # ({...
+                           $dstat !~ /^\(\{/ &&                                                # ({...
                            $ctx !~ /^.\s*#\s*define\s+TRACE_(?:SYSTEM|INCLUDE_FILE|INCLUDE_PATH)\b/)
                        {
                                $ctx =~ s/\n*$//;