Messages in this thread Patch in this message | | | From | Rusty Russell <> | Subject | [PATCH 6/6] typesafe: timers | Date | Sun, 20 Jan 2008 20:57:53 +1100 |
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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;
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