linux-kernel - Re: virtual irq isssue

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Date:	Thu, 7 Mar 2013 22:22:21 +0800
From:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
To:	Ashish Jangam <ashish.jangam@...tcummins.com>
Cc:	linux-kernel@...r.kernel.org, David Dajun Chen <dchen@...semi.com>
Subject: Re: virtual irq isssue - regmap_irq

On Thu, Mar 07, 2013 at 05:22:35PM +0530, Ashish Jangam wrote:
> On Thu, 2013-03-07 at 15:13 +0800, Mark Brown wrote:

> > This is a bug in your platform which will affect anything using a linear
> > domain.  The platform isn't setting up its interrupts correctly so that
> > the core knows that those interrupts are reserved, ideally the platform
> > would just use domains for everything but at least irq_alloc_decs()
> > needs to know what is going on.

> Thanks I got this, however in this case should regmap handle such
> condition where domain is unknown?

There is no "condition" or unknown domain for regmap to handle.  regmap
asked its irqdomain for an interrupt number and was given one, it's got
no way of validating what it gets back and we don't want to end up
having workaround code all over the kernel for broken platforms.

> By the way, I was testing on smdkv6410 where Dialog device is not a
> component of the board.

The board is broken anyway; fix the board.

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