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From: "jidong xiao" <jidong.xiao@gmail.com>
To: linux-kernel@vger.kernel.org
Subject: What does irq_canonicalize mean?
Date: Mon, 23 Jul 2007 21:12:22 +0800	[thread overview]
Message-ID: <4104961b0707230612l7250489dk6064b9cd2170bfaf@mail.gmail.com> (raw)

I found this function, inside include/asm-i386/irq.h or
include/asm-x86_64/irq.h,

static __inline__ int irq_canonicalize(int irq)
{
	return ((irq == 2) ? 9 : irq);
}

there is no comments,so I am totally confused what does this function
mean, why there is a "2", and why there is a "9"?

Thanks
Jason Xiao

             reply	other threads:[~2007-07-23 13:12 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-07-23 13:12 jidong xiao [this message]
2007-07-23 13:46 ` Alan Cox

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