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Subject: Re: request_irq return errno 38
From: Michael Ellerman <michael@ellerman.id.au>
To: Vijay Nikam <vijay.t.nikam@gmail.com>
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Date: Wed, 11 Feb 2009 20:54:32 +1100
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On Wed, 2009-02-11 at 15:11 +0530, Vijay Nikam wrote:
> Thanks for your prompt reply ...
>=20
> I am using kernel version 2.6.20 ...

OK, that kernel has the irq remapping stuff.

> May I know what raw IRQ means ? ? ? and what is the reason I cant map
> raw_irq_number ???

Sorry, that's not the best terminology.

I guess the right name is hardware irq number.

You can't map it because the kernel keeps a mapping between hardware irq
numbers and virtual irq numbers. request_irq() expects a virtual irq
number.

cheers

--=20
Michael Ellerman
OzLabs, IBM Australia Development Lab

wwweb: http://michael.ellerman.id.au
phone: +61 2 6212 1183 (tie line 70 21183)

We do not inherit the earth from our ancestors,
we borrow it from our children. - S.M.A.R.T Person

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