commit 1a47005dd5aa ("checkpatch: add *_NOTIFIER_HEAD as var
definition") causes the following warning when run on some
patches:

Unescaped left brace in regex is passed through in regex;
marked by < --HERE in m/(?:
...
   [238 lines of appalling perl output, mercifully not included]
...
)/ at ./scripts/checkpatch.pl line 3889.

This is broken, so revert it until a better solution is found.

Fixes: 1a47005dd5aa ("checkpatch: add *_NOTIFIER_HEAD as var
definition")

Cc: Andy Whitcroft <a...@canonical.com>
Cc: Joe Perches <j...@perches.com>
Cc: Gilad Ben-Yossef <gi...@benyossef.com>
Cc: Ofir Drang <ofir.dr...@arm.com>
Cc: Andrew Morton <a...@linux-foundation.org>
Signed-off-by: John Hubbard <jhubb...@nvidia.com>
---
 scripts/checkpatch.pl | 1 -
 1 file changed, 1 deletion(-)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 5c00151cdee8..284eb4bd84aa 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -3891,7 +3891,6 @@ sub process {
                                ^.DEFINE_$Ident\(\Q$name\E\)|
                                ^.DECLARE_$Ident\(\Q$name\E\)|
                                ^.LIST_HEAD\(\Q$name\E\)|
-                               ^.{$Ident}_NOTIFIER_HEAD\(\Q$name\E\)|
                                
^.(?:$Storage\s+)?$Type\s*\(\s*\*\s*\Q$name\E\s*\)\s*\(|
                                \b\Q$name\E(?:\s+$Attribute)*\s*(?:;|=|\[|\()
                            )/x) {
-- 
2.22.1

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