linux-kernel - Re: [PATCH v2 1/2] irqchip: add Broadcom Set Top Box Level-2 interrupt controller

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Date:	Fri, 23 May 2014 10:51:50 +0900 (JST)
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Florian Fainelli <f.fainelli@...il.com>
cc:	linux-arm-kernel@...ts.infradead.org,
	Brian Norris <computersforpeace@...il.com>,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	"open list:OPEN FIRMWARE AND..." <devicetree@...r.kernel.org>,
	open list <linux-kernel@...r.kernel.org>, jason@...edaemon.net
Subject: Re: [PATCH v2 1/2] irqchip: add Broadcom Set Top Box Level-2 interrupt
 controller

On Thu, 22 May 2014, Florian Fainelli wrote:
> +static void brcmstb_l2_intc_irq_handle(unsigned int irq, struct irq_desc *desc)
> +{
> +	struct brcmstb_l2_intc_data *b = irq_desc_get_handler_data(desc);
> +	struct irq_chip *chip = irq_get_chip(irq);

irq_desc_get_chip() is what you want here. irq_get_chip() is doing a
full lookop of desc, which is silly as you have desc already.

Thanks,

	tglx
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