timer: Prepare to change all DEFINE_TIMER() callbacks
Before we can globally change the function prototype of all timer callbacks,
we have to change those set up by DEFINE_TIMER(). Prepare for this by
casting the callbacks until the prototype changes globally.
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Kees Cook <keescook@chromium.org>
diff --git a/include/linux/timer.h b/include/linux/timer.h
index a1af92b..9f8895d 100644
--- a/include/linux/timer.h
+++ b/include/linux/timer.h
@@ -63,6 +63,9 @@
#define TIMER_TRACE_FLAGMASK (TIMER_MIGRATING | TIMER_DEFERRABLE | TIMER_PINNED | TIMER_IRQSAFE)
+#define TIMER_DATA_TYPE unsigned long
+#define TIMER_FUNC_TYPE void (*)(TIMER_DATA_TYPE)
+
#define __TIMER_INITIALIZER(_function, _data, _flags) { \
.entry = { .next = TIMER_ENTRY_STATIC }, \
.function = (_function), \
@@ -74,7 +77,7 @@
#define DEFINE_TIMER(_name, _function) \
struct timer_list _name = \
- __TIMER_INITIALIZER(_function, 0, 0)
+ __TIMER_INITIALIZER((TIMER_FUNC_TYPE)_function, 0, 0)
void init_timer_key(struct timer_list *timer, unsigned int flags,
const char *name, struct lock_class_key *key);
@@ -147,9 +150,6 @@
#define setup_pinned_deferrable_timer_on_stack(timer, fn, data) \
__setup_timer_on_stack((timer), (fn), (data), TIMER_DEFERRABLE | TIMER_PINNED)
-#define TIMER_DATA_TYPE unsigned long
-#define TIMER_FUNC_TYPE void (*)(TIMER_DATA_TYPE)
-
#ifndef CONFIG_LOCKDEP
static inline void timer_setup(struct timer_list *timer,
void (*callback)(struct timer_list *),