linux-kernel - Re: [PATCH 1/2] regmap: debugfs: remove bogus check

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Message-ID: <20150929181455.GB30445@sirena.org.uk>
Date:	Tue, 29 Sep 2015 19:14:55 +0100
From:	Mark Brown <broonie@...nel.org>
To:	Rasmus Villemoes <linux@...musvillemoes.dk>
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] regmap: debugfs: remove bogus check

On Tue, Sep 29, 2015 at 12:29:01AM +0200, Rasmus Villemoes wrote:
> snprintf cannot return a negative value (unless map->dev->driver->name
> happens to be over 2G long). So remove the bogus check.

>  	ret = snprintf(buf, PAGE_SIZE, "%s\n", map->dev->driver->name);
> -	if (ret < 0) {
> -		kfree(buf);
> -		return ret;
> -	}

It's hard to see a great value in removing error checking, even error
checking that's currently unlikely to ever trigger...

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