Messages in this thread | | | Date | Sat, 20 Feb 1999 11:58:03 +0100 (CET) | From | otel@ce ... | Subject | IRQ shutdown in 2.2.1 |
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Hello everybody,
I'm trying to find my way through 2.2.1 kernel sources. As i am _very_ far of being a hardware expert i have a question about about freeing IRQs in 2.2.1. AFAIG each PIC is described by a "struct hw_interrupt_type", e.g. the 8259 by "i8259A_irq_type". And whenever a driver frees an IRQ and there's nobody else having interest in this IRQ (no hooked "irqaction"s) we just mark it as IRQ_DISABLED and we call the PIC specific "shutdown" for this IRQ to disable this IRQ in the future.
Can somebody ACK if this is right ?
Many thanks in advance,
Florian.
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