Messages in this thread | | | Date | Wed, 27 Jan 2016 09:35:22 +0100 (CET) | From | Thomas Gleixner <> | Subject | Re: [PATCH v2] pci: fix unavailable irq number 255 reported by BIOS |
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On Wed, 27 Jan 2016, Cao jin wrote: > How about using IRQ_BITMAP_BITS as that "irq_valid" flag? because it is the > ceiling of struct irq_desc irq_desc[], and request_irq() will return -EINVAL > in case of the ceiling. > > #ifdef CONFIG_SPARSE_IRQ > # define IRQ_BITMAP_BITS (NR_IRQS + 8196) > #else > # define IRQ_BITMAP_BITS NR_IRQS > #endif
No. This is a core internal implementation detail.
Thanks,
tglx
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