[PATCH] scripts/checkpatch.pl - fix *_NOTIFIER_HEAD handling

[Valdis KlÄtnieks]

commit 81398d99e9de80d9dbe65dfe7aadec9497f88242
Author: Gilad Ben-Yossef <gilad@xxxxxxxxxxxxx>
Date:   Wed Jul 31 14:44:23 2019 +1000

    checkpatch: add *_NOTIFIER_HEAD as var definition

has a typo, resulting in a truly amazing error message:

Unescaped left brace in regex is passed through in regex; marked by <-- HERE in m/(?:
                                \n.}\s*$|
                                ^.DEFINE_(?^x:
                        [A-Za-z_][A-Za-z\d_]*
                        (?:\s*\#\#\s*[A-Za-z_][A-Za-z\d_]*)*
                )\(rtl_usb_probe\)|
                                ^.DECLARE_(?^x:
                        [A-Za-z_][A-Za-z\d_]*
                        (?:\s*\#\#\s*[A-Za-z_][A-Za-z\d_]*)*
                )\(rtl_usb_probe\)|
                                ^.LIST_HEAD\(rtl_usb_probe\)|
                                ^.{ <-- HERE (?^x:
                        [A-Za-z_][A-Za-z\d_]*
                        (?:\s*\#\#\s*[A-Za-z_][A-Za-z\d_]*)*
                )}_NOTIFIER_HEAD\(rtl_usb_probe\)|

(Rexexp dump continues for 236 lines total)

Fix the typo.

Signed-off-by: Valdis Kletnieks <valdis.kletnieks@xxxxxx>

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 5c00151cdee8..dd095d1e5a19 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -3891,7 +3891,7 @@ sub process {
 				^.DEFINE_$Ident\(\Q$name\E\)|
 				^.DECLARE_$Ident\(\Q$name\E\)|
 				^.LIST_HEAD\(\Q$name\E\)|
-				^.{$Ident}_NOTIFIER_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) {