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

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Message-ID: <CACRpkdb0q1w+c9w6fFhE6LLxrh-44aZtYz0HpkWeAWMc-gdKLQ@mail.gmail.com>
Date:	Mon, 20 May 2013 20:13:09 +0200
From:	Linus Walleij <linus.walleij@...aro.org>
To:	David Cohen <david.a.cohen@...el.com>
Cc:	Grant Likely <grant.likely@...retlab.ca>,
	Mika Westerberg <mika.westerberg@...ux.intel.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] gpio-langwell: fix irq conflicts when DT is not used

On Tue, May 7, 2013 at 1:11 AM, David Cohen <david.a.cohen@...el.com> 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>

Looks correct. Applied for rc-fixes with Mika's ACK.

Thanks!
Linus Walleij
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