linux-kernel - Re: [ 04/69] drm/i915: fix up ivb plane 3 pageflips

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Date:	Mon, 18 Jun 2012 19:10:40 -0300
From:	Eugeni Dodonov <eugeni.dodonov@...el.com>
To:	Herton Ronaldo Krzesinski <herton.krzesinski@...onical.com>
CC:	Ben Hutchings <ben@...adent.org.uk>, linux-kernel@...r.kernel.org,
	stable@...r.kernel.org, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	Daniel Vetter <daniel.vetter@...ll.ch>,
	Chris Wilson <chris@...is-wilson.co.uk>
Subject: Re: [ 04/69] drm/i915: fix up ivb plane 3 pageflips

On 06/18/2012 06:55 PM, Herton Ronaldo Krzesinski wrote:
>> +	default:
>> +		WARN_ONCE(1, "unknown plane in flip command\n");
>> +		ret = -ENODEV;
>> +		goto err;
> 
> Shouldn't this have been "goto err_unpin;"?
> 
> It's not a problem in the backport for 3.2, same code is in the original
> patch, just noticed it seems a problem while looking at it; but by what
> changelog says the default case is said to not trigger in "practice"
> (catch programming error), so I think it doesn't pose a real issue in
> practice.

You are right, it should be err_unpin. I sent a patch rectifying this.

In practice, this should not happen, but still, better be safe than
sorry. Thanks for catching that!

Eugeni
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