linux-kernel - Re: [PATCH v2] add LED driver for PCA9663 I2C chip

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Date:	Mon, 30 Jan 2012 16:34:24 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Peter Meerwald <pmeerw@...erw.net>, linux-kernel@...r.kernel.org,
	lars@...afoo.de, rpurdie@...ys.net
Subject: Re: [PATCH v2] add LED driver for PCA9663 I2C chip

On Mon, 30 Jan 2012 16:28:49 -0800
Andrew Morton <akpm@...ux-foundation.org> wrote:

> > +exit:
> > +	while (i--) {
> > +		led_classdev_unregister(&pca9633[i].led_cdev);
> > +		cancel_work_sync(&pca9633[i].work);
> > +	}
> 
> This (untested!) loop has an off-by-one error. 

Well, it's partly wrong.  It's wrong for the cancel_work_sync() but not
for the led_classdev_unregister().  The cancel_work_sync() can just be
removed: we haven't scheduled any works yet.


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