kconfig: fix lists definition for C++

The C++ compiler is more strict in that it refuses to assign
a void* to a struct list_head*.

Fix that by explicitly casting the poisonning constants.

(Tested with all 5 frontends, now.)

Reported-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Benjamin Poirier <bpoirier@suse.de>

1 files changed, 2 insertions, 2 deletions

diff --git a/scripts/kconfig/list.h b/scripts/kconfig/list.h
index ea1d58119d20..685d80e1bb0e 100644
--- a/scripts/kconfig/list.h
+++ b/scripts/kconfig/list.h
@@ -125,7 +125,7 @@ static inline void __list_del(struct list_head *prev, struct list_head *next)
 static inline void list_del(struct list_head *entry)
 {
         __list_del(entry->prev, entry->next);
-        entry->next = LIST_POISON1;
-        entry->prev = LIST_POISON2;
+        entry->next = (struct list_head*)LIST_POISON1;
+        entry->prev = (struct list_head*)LIST_POISON2;
 }
 #endif