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For example, use \cpp|IRQF_SHARED| to indicate you are willing to share the IRQ with other interrupt handlers (usually because a number of hardware devices sit on the same IRQ); use the \cpp|IRQF_ONESHOT| to indicate that the IRQ is not reenabled after the handler finished.
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1988
It should be noted that in some materials, you may encounter another set of IRQ flags named with the \cpp|SA| prefix.
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1989
For example, the \cpp|SA_SHIRQ| and the \cpp|SA_INTERRUPT|.
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Those are the the IRQ flags in the older kernels.
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+
Those are the IRQ flags in the older kernels.
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1991
They have been removed completely.
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Today only the \cpp|IRQF| flags are in use.
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1993
This function will only succeed if there is not already a handler on this IRQ, or if you are both willing to share.
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