linux-kernel - Re: [PATCH] DS1WM: decouple host IRQ and INTR active state settings.

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Message-Id: <1199751203.26310.64.camel@bilbo.vpop.net>
Date:	Mon, 07 Jan 2008 16:13:23 -0800
From:	Matt Reimer <mreimer@...p.net>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Philipp Zabel <philipp.zabel@...il.com>,
	linux-kernel@...r.kernel.org, johnpol@....mipt.ru,
	szabolcs.gyurko@....hu
Subject: Re: [PATCH] DS1WM: decouple host IRQ and INTR active state
	settings.

On Mon, 2008-01-07 at 15:10 -0800, Andrew Morton wrote:
> On Sun, 06 Jan 2008 14:46:14 +0100
> Philipp Zabel <philipp.zabel@...il.com> wrote:
> 
> > The DS1WM driver incorrectly infers the IAS bit (1-wire interrupt active
> > high) from IRQ settings. There are devices that have IAS=0 but still need
> > the IRQ to trigger on a rising edge. With this patch, machines with DS1WM
> > that need IAS=1 have to set .active_high=1 in the ds1wm_platform_data.

> But no drivers are converted to set ds1wm_platform_data.active_high.  Won't
> IORESOURCE_IRQ_HIGHEDGE devices be broken by this change?

Good point; I think you're right. I'd guess the other platforms that use
this driver are in the handhelds.org tree, but I've been out of the loop
a while. Philipp, is this the case?

Matt

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