linux-kernel - Re: [PATCH 1/4] leds: Support OpenFirmware led bindings

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Date:	Thu, 11 Dec 2008 13:33:51 -0800 (PST)
From:	Trent Piepho <tpiepho@...escale.com>
To:	Anton Vorontsov <avorontsov@...mvista.com>
cc:	linux-kernel@...r.kernel.org, linuxppc-dev@...abs.org,
	Richard Purdie <rpurdie@...ys.net>,
	devicetree-discuss@...abs.org,
	Grant Likely <grant.likely@...retlab.ca>,
	Sean MacLennan <smaclennan@...atech.com>
Subject: Re: [PATCH 1/4] leds: Support OpenFirmware led bindings

On Wed, 10 Dec 2008, Anton Vorontsov wrote:
>> +	gpio_direction_output(led_dat->gpio, led_dat->active_low);
>
> This can fail (yeah, the original code didn't check return value
> either).

I've added a check.

>> +		unsigned int flags;
>
> I think it would be better to use `enum of_gpio_flags' type here,
> just for clarity.

You're right, I forgot to change this after the of_get_gpio patch was
changed.

>> +		ret = create_gpio_led(&led, &pdata->led_data[pdata->num_leds++],
>> +				      &ofdev->dev, NULL);
>> +		if (ret < 0)
>
> of_node_put(np); is missing here.

of_node_put(child) you mean.  It's easy to forget this when one exits one
of these iterators early, since there's no explicit get or put otherwise.
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