linux-kernel - Re: [PATCH] gpio-langwell: fix irq conflicts when DT is not used

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Message-ID: <51892D29.7030803@intel.com>
Date:	Tue, 07 May 2013 09:34:49 -0700
From:	David Cohen <david.a.cohen@...el.com>
To:	Mika Westerberg <mika.westerberg@...ux.intel.com>
CC:	grant.likely@...retlab.ca, linus.walleij@...aro.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] gpio-langwell: fix irq conflicts when DT is not used

On 05/07/2013 12:59 AM, Mika Westerberg wrote:
> On Mon, May 06, 2013 at 04:11:03PM -0700, David Cohen wrote:
>> When DT is not used IOAPIC does not register irq domain. As result
>> IOAPIC won't care about gpio-langwell's virq and may cause conflict if
>> an irq number is equal to gpio-langwell's virq mapped beforehand.
>>
>> This patch tells gpio_langwell to not ignore irq_base if != 0 and
>> preferably use it to avoid the conflict.
>>
>> If DT is used, irq_base can safely be 0.
>>
>> Signed-off-by: David Cohen <david.a.cohen@...el.com>
> Presuming that you have tested this on Medfield and it still works there.

Medfield and Clovertrail :)

Br, David

>
> Acked-by: Mika Westerberg <mika.westerberg@...ux.intel.com>

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