Re: [PATCH v3 1/4] genirq: Introduce driver-readable IRQ status word

Thomas Gleixner
2010-12-14T20:47:46Z

On Mon, 13 Dec 2010, Jan Kiszka wrote:
> +/**
> + * get_irq_status - read interrupt line status word
> + * @irq: Interrupt line of the status word
> + *
> + * This returns the current content of the status word associated with
> + * the given interrupt line. See IRQS_* flags for details.
> + */
> +unsigned long get_irq_status(unsigned int irq)
> +{
> + struct irq_desc *desc = irq_to_desc(irq);
> +
> + return desc ? desc->irq_data.drv_status : 0;
> +}
> +EXPORT_SYMBOL_GPL(get_irq_status);

We should document that this is a snapshot and in no way serialized
against modifications of drv_status. I'll fix up the kernel doc.

Thanks,

tglx