linux-kernel - Re: [PATCH 3/3] i2c: core: Map OF IRQ at probe time

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Date:	Fri, 7 Nov 2014 19:05:12 +0100
From:	Wolfram Sang <wsa@...-dreams.de>
To:	Laurent Pinchart <laurent.pinchart+renesas@...asonboard.com>
Cc:	linux-i2c@...r.kernel.org, linux-kernel@...r.kernel.org,
	Thierry Reding <thierry.reding@...il.com>
Subject: Re: [PATCH 3/3] i2c: core: Map OF IRQ at probe time

On Thu, Oct 30, 2014 at 03:59:38PM +0200, Laurent Pinchart wrote:
> I2C clients instantiated from OF get their IRQ mapped at device
> registration time. This leads to the IRQ being silently ignored if the
> related irqchip hasn't been proved yet.
> 
> Fix this by moving IRQ mapping at probe time using of_get_irq(). The
> function operates as irq_of_parse_and_map() but additionally returns
> -EPROBE_DEFER if the irqchip isn't available, allowing us to defer I2C
> client probing.
> 
> Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@...asonboard.com>

Applied to for-next, thanks!


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