Messages in this thread |  | | From | David Brownell <> | Subject | Re: [patch 2.6.25-rc5 1/2] gpiolib: dynamic gpio number allocation | Date | Thu, 13 Mar 2008 15:18:58 -0800 |
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On Thursday 13 March 2008, Andrew Morton wrote:
> hm. I suppose that if someone want a huge number of GPIOs then we can > convert this to a bitmap or an IDR tree easily enough.
Actually, I tried IDRs for a while and they broke platforms which needed to initialize and use GPIOs early: before kmalloc would work. A real PITA that was -- and slow too.
> Shouldn't ARCH_NR_GPIOS be CONFIG_NR_GPIOS?
No more than NR_IRQS is settable via Kconfig. And for rather similar reasons. :)
- Dave
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