This patch lets timer callback functions have their natural type
(ie. exactly match the data pointer type); it allows the old "unsigned
long data" type as well.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
diff -r 142a2cf4a8dc include/linux/timer.h
--- a/include/linux/timer.h Sun Jan 20 19:01:56 2008 +1100
+++ b/include/linux/timer.h Sun Jan 20 19:36:33 2008 +1100
@@ -24,11 +24,13 @@ struct timer_list {
extern struct tvec_t_base_s boot_tvec_bases;
-#define TIMER_INITIALIZER(_function, _expires, _data) { \
- .function = (_function), \
- .expires = (_expires), \
- .data = (_data), \
- .base = &boot_tvec_bases, \
+
+#define TIMER_INITIALIZER(_function, _expires, _data) { \
+ .function = cast_if_type(_function, void (*)(typeof(_data)), \
+ void (*)(unsigned long)), \
+ .expires = (_expires), \
+ .data = (unsigned long)(_data), \
+ .base = &boot_tvec_bases, \
}
#define DEFINE_TIMER(_name, _function, _expires, _data) \
@@ -38,9 +40,15 @@ void fastcall init_timer(struct timer_li
void fastcall init_timer(struct timer_list * timer);
void fastcall init_timer_deferrable(struct timer_list *timer);
-static inline void setup_timer(struct timer_list * timer,
- void (*function)(unsigned long),
- unsigned long data)
+#define setup_timer(timer, function, data) \
+ __setup_timer((timer), \
+ cast_if_type(function, void (*)(typeof(data)), \
+ void (*)(unsigned long)), \
+ (unsigned long)(data))
+
+static inline void __setup_timer(struct timer_list * timer,
+ void (*function)(unsigned long),
+ unsigned long data)
{
timer->function = function;
timer->data = data;
--
