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.
This is not really needed, but it's a bit cleaner and we can probably
release some resources.
--
Luca.
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