linux-kernel - Re: [PATCH RFC] drm/i2c: tda998x: dead-code or unhandled error condition ?

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Date:	Tue, 28 Jul 2015 10:25:26 +0200
From:	Jean-Francois Moine <moinejf@...e.fr>
To:	Nicholas Mc Guire <hofrat@...dl.org>
Cc:	Russell King <rmk+kernel@....linux.org.uk>,
	linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org
Subject: Re: [PATCH RFC] drm/i2c: tda998x: dead-code or unhandled error
 condition ?

On Wed, 10 Jun 2015 14:58:48 +0200
Nicholas Mc Guire <hofrat@...dl.org> wrote:

> event API conformance testing with coccinelle spatches are being
> used to locate API usage inconsistencies this triggert with:
> ./drivers/gpu/drm/i2c/tda998x_drv.c:1062
>         incorrect check for negative return
> 
> The return of wait_event_timeout is always >= 0, thus the negative 
> check was effectively being ignoring - as the timeout will be checked
> a few lines below the error condition being checked here seems to be
> wrong or this is simply dead code which would be my guess as the
> timeout condition check covers the wait-queue related failure condition.
> 
> Signed-off-by: Nicholas Mc Guire <hofrat@...dl.org>

Acked-by: Jean-Francois Moine <moinejf@...e.fr>

-- 
Ken ar c'hentañ	|	      ** Breizh ha Linux atav! **
Jef		|		http://moinejf.free.fr/
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