linux-kernel - Re: [PATCH] gpiolib: allow exported GPIO nodes to be named using sysfs links

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Message-Id: <20090622122547.bc672764.akpm@linux-foundation.org>
Date:	Mon, 22 Jun 2009 12:25:47 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Jani Nikula <ext-jani.1.nikula@...ia.com>
Cc:	david-b@...bell.net, linux-kernel@...r.kernel.org,
	ext-jani.1.nikula@...ia.com
Subject: Re: [PATCH] gpiolib: allow exported GPIO nodes to be named using
 sysfs links

On Thu, 11 Jun 2009 12:19:03 +0300
Jani Nikula <ext-jani.1.nikula@...ia.com> wrote:

> +int gpio_export_link(struct device *dev, const char *name, unsigned gpio)
> +{
> +	struct gpio_desc	*desc;
> +	int			status = -EINVAL;
> +
> +	BUG_ON(dev == NULL);
> +	BUG_ON(name == NULL);

We usually don't bother with these assertions.  If the kernel will
reliably oops if one of these is NULL, then that provides the same
information anyway.

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