linux-kernel - Re: [PATCH] omapfb/dss: wait_for_completion_interruptible

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Date:	Wed, 10 Aug 2016 13:21:46 +0300
From:	Tomi Valkeinen <tomi.valkeinen@...com>
To:	Nicholas Mc Guire <hofrat@...dl.org>
CC:	Jean-Christophe Plagniol-Villard <plagnioj@...osoft.com>,
	Rob Clark <robdclark@...il.com>,
	Dave Airlie <airlied@...il.com>,
	Peter Ujfalusi <peter.ujfalusi@...com>,
	Luis de Bethencourt <luisbg@....samsung.com>,
	<linux-omap@...r.kernel.org>, <linux-fbdev@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] omapfb/dss: wait_for_completion_interruptible_timeout
 expects long

On 25/07/16 20:12, Nicholas Mc Guire wrote:
> wait_for_completion_timeout_interruptible returns long not unsigned long.
> an appropriately typed variable is introduced and assignments fixed up.
> 
> Fixes: f76ee892a99e ("omapfb: copy omapdss & displays for omapfb")
> 
> Signed-off-by: Nicholas Mc Guire <hofrat@...dl.org>
> ---
> 
> API non-compliance was located by coccinelle
> 
> This is mostly cosmetic since the returned value is only compared 
> at present, however if remaining time (completion occurred) where ever 
> used, then a signal received would be interpreted as a large remaining 
> jiffies left, which would be wrong.
> 
> Compile tested with: omap2plus_defconfig (implies CONFIG_FB_OMAP2_DSS)
> 
> Patch is against 4.7.0-rc7 (localversion-next -next-20160724)
> 
>  drivers/video/fbdev/omap2/omapfb/dss/dispc-compat.c | 7 ++++---
>  1 file changed, 4 insertions(+), 3 deletions(-)

Thanks, queued for v4.9. I dropped the "Fixes: " line, as that commit
only does a copy of the files, so the commit didn't really introduce the
bug.

 Tomi



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