static_call: Fix return type of static_call_init
Functions that are passed to early_initcall should be of type
initcall_t, which expects a return type of int. This is not currently an
error but a patch in the Clang LTO series could change that in the
future.
Fixes: 9183c3f9ed71 ("static_call: Add inline static call infrastructure")
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Sami Tolvanen <samitolvanen@google.com>
Link: https://lore.kernel.org/lkml/20200903203053.3411268-17-samitolvanen@google.com/
diff --git a/include/linux/static_call.h b/include/linux/static_call.h
index bfa2ba3..695da4c 100644
--- a/include/linux/static_call.h
+++ b/include/linux/static_call.h
@@ -136,7 +136,7 @@
#ifdef CONFIG_HAVE_STATIC_CALL_INLINE
-extern void __init static_call_init(void);
+extern int __init static_call_init(void);
struct static_call_mod {
struct static_call_mod *next;
@@ -187,7 +187,7 @@
#elif defined(CONFIG_HAVE_STATIC_CALL)
-static inline void static_call_init(void) { }
+static inline int static_call_init(void) { return 0; }
struct static_call_key {
void *func;
@@ -234,7 +234,7 @@
#else /* Generic implementation */
-static inline void static_call_init(void) { }
+static inline int static_call_init(void) { return 0; }
struct static_call_key {
void *func;
diff --git a/kernel/static_call.c b/kernel/static_call.c
index f8362b3..84565c2 100644
--- a/kernel/static_call.c
+++ b/kernel/static_call.c
@@ -410,12 +410,12 @@
return __static_call_mod_text_reserved(start, end);
}
-void __init static_call_init(void)
+int __init static_call_init(void)
{
int ret;
if (static_call_initialized)
- return;
+ return 0;
cpus_read_lock();
static_call_lock();
@@ -434,6 +434,7 @@
#ifdef CONFIG_MODULES
register_module_notifier(&static_call_module_nb);
#endif
+ return 0;
}
early_initcall(static_call_init);
