> spin_lock_irqsave(&local_lock, flags);
> Muck_With_The_RTC_Chip();
> spin_unlock_irqrestore(&local_lock, flags);
>
> This protects only the local procedure. In the meantime, somebody
> else, using another CPU is mucking with the same RTC Chip. The
You need to put the spinlock in for every other use of the chip
> the data register. The "somebody else" is a realtime-clock ISR.
Thata fine. You can compute worst case accesses for your Muck_with_..
Alan
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This archive was generated by hypermail 2b29 : Mon Oct 23 2000 - 21:00:13 EST