From: Kevin Hilman <khilman@linaro.org>
To: Grygorii Strashko <grygorii.strashko@ti.com>
Cc: Grant Likely <grant.likely@linaro.org>, Chen-Yu Tsai <wens@csie.org>,
        Linus Walleij <linus.walleij@linaro.org>,
        Lee Jones <lee.jones@linaro.org>, Rob Herring <robh@kernel.org>,
        Russell King <linux@arm.linux.org.uk>,
        "devicetree\@vger.kernel.org" <devicetree@vger.kernel.org>,
        Tony Lindgren <tony@atomide.com>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        LKML <linux-kernel@vger.kernel.org>, Rob Herring <robh+dt@kernel.org>,
        Olof Johansson <olof@lixom.net>,
        Thierry Reding <thierry.reding@gmail.com>,
        Santosh Shilimkar <santosh.shilimkar@ti.com>,
        linux-arm-kernel <linux-arm-kernel@lists.infradead.org>
Subject: Re: [PATCH v1] of/irq: do irq resolution in platform_get_irq_byname()
References: <1400582523-22684-1-git-send-email-grygorii.strashko@ti.com>
	<20140523080333.66720C4176E@trevor.secretlab.ca>
	<CAGa+x85mOHtNAj-UHgK2_z8zWAF=qwFcRcUgHTR-byNiX7heHA@mail.gmail.com>
	<CAL_JsqLm3wfVS+au+JUbhBhxz=LuVpepH6GxabCQhPowhbw77g@mail.gmail.com>
	<20140528071855.GJ4227@lee--X1>
	<CACRpkdYgkEOjLamYu5uKSgs3iTNJ-w5XkbeygKjRdR-bNdETfg@mail.gmail.com>
	<CAGb2v64f8Wju6dtVuVN2x=9YVGA-=RXozzhpJZNspKZ05f=jtA@mail.gmail.com>
	<CACxGe6ts-TcSKk2F0-XSxAxeTxVCiyDHgh-O12v+F2OjHUsPyg@mail.gmail.com>
	<5385B566.2050600@ti.com>
Date: Mon, 02 Jun 2014 07:48:59 -0700
In-Reply-To: <5385B566.2050600@ti.com> (Grygorii Strashko's message of "Wed,
	28 May 2014 13:07:34 +0300")
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Grygorii Strashko <grygorii.strashko@ti.com> writes:

> Hi All,
>
> On 05/28/2014 12:03 PM, Grant Likely wrote:

[...]

>> The bisected patch causes platform_get_irq() to always parse the
>> devicetree to obtain the irq instead of using a precalculated value in
>> the platform_device. There are two possible scenarios for this problem
>> that I can think of:
>> 1) Platform_get_irq() is getting called multiple times (which would
>> happen on a deferred probe) but the setup code isn't handling it
>> properly, like trying to request the GPIO more than once
>> 2) the platform_device was preloaded with an irq number that differs
>> from what is determined when parsing the tree. This would happen if a
>> platform_device was created manually.
>>
>
> Could anyone try attached patch? It has to improve situation, but it
> might not fix all problems (see my previous e-mail).

I can confirm it makes the STE Snowball boot again on top of next-20150602.

> From 4a41912dba648c935982274966426fa430fd5aa4 Mon Sep 17 00:00:00 2001
> From: Grygorii Strashko <grygorii.strashko@ti.com>
> Date: Wed, 28 May 2014 12:53:34 +0300
> Subject: [PATCH] mfd: ab8500: fix dt irq mapping
>
> The AD8500 defines itself as interrupt-controller in DT,
> but it doesn't assign DT node to IRQ domain when creates it.
> As result, of_irq_xx() helpers don't work because they can't
> find necessary IRQ domain.
>
> Hence, fix it by assigning AD8500 core device DT node to IRQ
> domain when it's created.
>
> Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>

Tested-by: Kevin Hilman <khilman@linaro.org>

Kevin
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