1DISABLE_HARDIRQ(9)         Public Functions Provided        DISABLE_HARDIRQ(9)
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NAME

6       disable_hardirq - disables an irq and waits for hardirq completion
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SYNOPSIS

9       bool disable_hardirq(unsigned int irq);
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ARGUMENTS

12       irq
13           Interrupt to disable
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DESCRIPTION

16       Disable the selected interrupt line. Enables and Disables are nested.
17       This function waits for any pending hard IRQ handlers for this
18       interrupt to complete before returning. If you use this function while
19       holding a resource the hard IRQ handler may need you will deadlock.
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21       When used to optimistically disable an interrupt from atomic context
22       the return value must be checked.
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RETURNS

25       false if a threaded handler is active.
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27       This function may be called - with care - from IRQ context.
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AUTHORS

30       Thomas Gleixner <tglx@linutronix.de>
31           Author.
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33       Ingo Molnar <mingo@elte.hu>
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37Kernel Hackers Manual 3.10         June 2019                DISABLE_HARDIRQ(9)
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