Aleksandar Bakic wrote:
>
> OK; is rt_free_global() potentially dangerous (in case there's nothing
> to free)?
Don't think so ... it will normally return negative value as failure.
> Should I enable the interrupt just once, immediately after the call to
> rt_request_global_irq(), or in the handler, immediately before calling
> rt_pend_linux_irq()?
>
I've made all my drivers with only one rt_enable_irq just after the
irq attaching and I've not seen any problem.
But you can rt_disable_irq in the begining of your irq handler then
rt_enable_irq at the end.
rt_pend_linux_irq() does not need rt_enable_irq if it hasn't been
disabled.
Chris.
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Kumsta Christophe
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Real-Time System developper
RT-Linux/RTAI ( Use the Source Luck !)
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