irq_disable man page on OpenSuSE

irq_disable man page on OpenSuSE

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IRQ_DISABLE(9)		  Internal Functions Provided		IRQ_DISABLE(9)

NAME
       irq_disable - Mark interupt disabled

SYNOPSIS
       void irq_disable(struct irq_desc * desc);

ARGUMENTS
       desc
	   irq descriptor which should be disabled

DESCRIPTION
       If the chip does not implement the irq_disable callback, we use a lazy
       disable approach. That means we mark the interrupt disabled, but leave
       the hardware unmasked. That's an optimization because we avoid the
       hardware access for the common case where no interrupt happens after we
       marked it disabled. If an interrupt happens, then the interrupt flow
       handler masks the line at the hardware level and marks it pending.

AUTHORS
       Thomas Gleixner <tglx@linutronix.de>
	   Author.

       Ingo Molnar <mingo@elte.hu>
	   Author.

COPYRIGHT
Kernel Hackers Manual 3.11	 November 2013			IRQ_DISABLE(9)

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