Date: Sat, 25 Oct 2014 21:35:48 +0200 (CEST)
From: Thomas Gleixner <tglx@linutronix.de>
To: Marc Zyngier <marc.zyngier@arm.com>
cc: Abhijeet Dharmapurikar <adharmap@codeaurora.org>, Phong Vo <pvo@apm.com>,
        Linus Walleij <linus.walleij@linaro.org>, Tin Huynh <tnhuynh@apm.com>,
        Y Vo <yvo@apm.com>, Toan Le <toanle@apm.com>,
        Bjorn Andersson <bjorn@kryo.se>, Arnd Bergmann <arnd@arndb.de>,
        linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org,
        linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH 1/3] genirq: Allow the irqchip state of an IRQ to be
 save/restored
In-Reply-To: <1414232097-4328-2-git-send-email-marc.zyngier@arm.com>
Message-ID: <alpine.DEB.2.11.1410252131110.5308@nanos>
References: <1414232097-4328-1-git-send-email-marc.zyngier@arm.com> <1414232097-4328-2-git-send-email-marc.zyngier@arm.com>
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Sender: linux-kernel-owner@vger.kernel.org

On Sat, 25 Oct 2014, Marc Zyngier wrote:
> +int irq_get_irqchip_state(unsigned int irq, int state)
> +{
> +	struct irq_desc *desc;
> +	struct irq_data *data;
> +	struct irq_chip *chip;
> +	int val;
> +
> +	desc = irq_to_desc(irq);
> +	if (!desc)
> +		return -EINVAL;
> +
> +	data = irq_desc_get_irq_data(desc);
> +
> +	chip = irq_desc_get_chip(desc);
> +	if (!chip->irq_get_irqchip_state)
> +		return -EINVAL;
> +
> +	chip_bus_lock(desc);
> +	val = chip->irq_get_irqchip_state(data, state);

Hmm. What's the irq_get_irqchip_state() callback supposed to return?

Thanks,

	tglx
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