>
> This kernel code should do just fine.
>
>
>
> struct INFO {
> struct timer_list timer; // For test timer
> atomic_t running; // Timer is running
> };
>
> //-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
> //
> // This stops the timer. This must NOT be called with a spin-lock
> // held.
> //
> static void stop_timer()
> {
> if(atomic_read(&info->running))
> {
> atomic_dec(&info->running);
this is a race.
> if(info->timer.function)
> del_timer(&info->timer);
you probably want del_timer_sync() here.
> static void start_timer(void)
> {
> if(!atomic_read(&info->running))
> {
> atomic_inc(&info->running);
same race.
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