linux-kernel - Re: [PATCH 1/3] gpio: dwapb: drop irq_setup_generic

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Message-ID: <CACRpkdbu6LKLntP2J=ypLTrAYscvzf5WjPYb-E+RKH_vAPEYHg@mail.gmail.com>
Date:	Tue, 25 Mar 2014 21:37:50 +0100
From:	Linus Walleij <linus.walleij@...aro.org>
To:	Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
	Jamie Iles <jamie@...ieiles.com>
Cc:	Alan Tull <atull@...era.com>, Alexandre Courbot <gnurou@...il.com>,
	"linux-gpio@...r.kernel.org" <linux-gpio@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Dinh Nguyen <dinguyen@...era.com>
Subject: Re: [PATCH 1/3] gpio: dwapb: drop irq_setup_generic_chip()

Aha Jamie not even on the original thread. Here.

On Tue, Mar 25, 2014 at 9:37 PM, Linus Walleij <linus.walleij@...aro.org> wrote:
> On Thu, Mar 20, 2014 at 8:55 PM, Sebastian Andrzej Siewior
> <bigeasy@...utronix.de> wrote:
>
>> This looks kinda wrong I didn't manage to fully test it.
>> The driver calls irq_alloc_domain_generic_chips() which creates a gc and
>> adds it to gc_list. The driver later then calls irq_setup_generic_chip()
>> which also initializes the gc and adds it to the gc_list() and this
>> corrupts the list.
>> I can't find a single chip in tree which uses both functions so I think
>> that irq_setup_generic_chip() can be dropped.
>>
>> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
>
> Jamie: comments?
>
> Can you instead of this try to use my new generic gpiolib
> irqchip helpers that I just merged to the GPIO tree?
>
> Yours,
> Linus Walleij
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