linux-kernel - Re: [PATCH v3 2/8] wlcore: set irq_flags in the board files instead of hiding behind a quirk

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Message-ID: <20130703142310.GT15056@arwen.pp.htv.fi>
Date:	Wed, 3 Jul 2013 17:23:11 +0300
From:	Felipe Balbi <balbi@...com>
To:	Luciano Coelho <coelho@...com>
CC:	<balbi@...com>, <linux-wireless@...r.kernel.org>,
	<tony@...mide.com>, <nsekhar@...com>, <mturquette@...aro.org>,
	<mark.rutland@....com>, <grant.likely@...aro.org>,
	<rob.herring@...xeda.com>, <devicetree-discuss@...ts.ozlabs.org>,
	<linux-doc@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<linux-omap@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>, <nm@...com>
Subject: Re: [PATCH v3 2/8] wlcore: set irq_flags in the board files instead
 of hiding behind a quirk

On Wed, Jul 03, 2013 at 05:18:14PM +0300, Luciano Coelho wrote:
> On Wed, 2013-07-03 at 17:13 +0300, Felipe Balbi wrote:
> > Hi,
> > 
> > On Wed, Jul 03, 2013 at 05:03:23PM +0300, Luciano Coelho wrote:
> > > diff --git a/arch/arm/mach-omap2/board-4430sdp.c b/arch/arm/mach-omap2/board-4430sdp.c
> > > index 56a9a4f..953f620 100644
> > > --- a/arch/arm/mach-omap2/board-4430sdp.c
> > > +++ b/arch/arm/mach-omap2/board-4430sdp.c
> > > @@ -703,12 +703,30 @@ static void __init omap4_sdp4430_wifi_init(void)
> > >  
> > >  	omap4_sdp4430_wifi_mux_init();
> > >  	omap4_sdp4430_wlan_data.irq = gpio_to_irq(GPIO_WIFI_IRQ);
> > > +
> > > +	ret = gpio_request_one(GPIO_WIFI_IRQ, GPIOF_IN, "GPIO_WIFI_IRQ");
> > > +	if (ret) {
> > > +		pr_err("error requesting wl12xx gpio: %d\n", ret);
> > > +		goto out;
> > > +	}
> > > +
> > > +	ret = irq_set_irq_type(gpio_to_irq(GPIO_WIFI_IRQ), IRQ_TYPE_LEVEL_HIGH);
> > > +	if (ret) {
> > > +		pr_err("error setting wl12xx irq type: %d\n", ret);
> > > +		goto free;
> > > +	}
> > > +
> > >  	ret = wl12xx_set_platform_data(&omap4_sdp4430_wlan_data);
> > >  	if (ret)
> > >  		pr_err("Error setting wl12xx data: %d\n", ret);
> > > +
> > >  	ret = platform_device_register(&omap_vwlan_device);
> > >  	if (ret)
> > >  		pr_err("Error registering wl12xx device: %d\n", ret);
> > > +out:
> > > +	return;
> > > +free:
> > > +	gpio_free(GPIO_WIFI_IRQ);
> > 
> > actually, you should leave this GPIO requested in order to use it as
> > IRQ.
> > 
> > ditto for all others
> 
> Actually, I don't need to use the GPIO if something goes wrong (ie.
> setting the IRQ type or setting the platform data).  Notice that in the
> normal cases (ie. without errors), I return before the gpio_free() is
> called.

hah, missed the 'return' call, my bad :-p

Reviewed-by: Felipe Balbi <balbi@...com>
Corrected-my-broken-eye-sight-by: Luciano Coelho <coelho@...com>

-- 
balbi

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