linux-kernel - Re: [PATCH 1/4 v4] GPIO: gpio-dwapb: Enable platform driver binding to MFD driver

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Date:	Tue, 16 Sep 2014 09:22:43 -0500
From:	atull <atull@...nsource.altera.com>
To:	Weike Chen <alvin.chen@...el.com>
CC:	Linus Walleij <linus.walleij@...aro.org>,
	Alexandre Courbot <gnurou@...il.com>,
	Grant Likely <grant.likely@...aro.org>,
	Rob Herring <robh+dt@...nel.org>, <linux-gpio@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
	Boon Leong Ong <boon.leong.ong@...el.com>,
	Hock Leong Kweh <hock.leong.kweh@...el.com>,
	Darren Hart <dvhart@...ux.intel.com>,
	Sebastian Andrzej Siewior <sebastian@...akpoint.cc>,
	Mika Westerberg <mika.westerberg@...el.com>,
	Andriy Shevchenko <andriy.shevchenko@...el.com>,
	Arnd Bergmann <arnd@...db.de>
Subject: Re: [PATCH 1/4 v4] GPIO: gpio-dwapb: Enable platform driver binding
 to MFD driver

On Tue, 16 Sep 2014, Weike Chen wrote:

One more:

> +
> +		/*
> +		 * Only port A can provide interrupts in all configurations of
> +		 * the IP.
> +		 */
> +		if (pp->idx == 0 &&
> +		    of_property_read_bool(port_np, "interrupt-controller")) {
> +			pp->irq = irq_of_parse_and_map(port_np, 0);
> +			if (!pp->irq) {
> +				dev_warn(dev, "no irq for bank %s\n",
> +					 port_np->full_name);
> +			}
> +		} else {
> +			pp->irq	= 0;
> +		}

The else clause is not needed since pp->irq == 0 already, right?

Alan

> +
> +		pp->irq_shared	= false;
> +		pp->gpio_base	= -1;
> +		pp->name	= port_np->full_name;
> +	}
> +
> +	return pdata;
> +}
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