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Date: Mon, 2 Oct 2006 13:58:42 -0700
From: Andrew Morton <akpm@osdl.org>
Subject: Re: [PATCH 3/3] IRQ: Maintain regs pointer globally rather than
 passing to IRQ handlers
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On Mon, 2 Oct 2006 13:46:11 -0700
David Brownell <david-b@pacbell.net> wrote:

> The only downside I can think of for dropping pt_regs is that now it's harder
> to just find the IRQ handler in a driver ... it's previously been all but
> guaranteed that the _only_ use of that type is the IRQ logic.  The upsides
> surely outweigh that.

You can use irqreturn_t for that.