linux-kernel - Re: [PATCH] IIO: Fix adding more than one iio device eventset

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Message-ID: <4BBF2CC4.5000303@cam.ac.uk>
Date:	Fri, 09 Apr 2010 14:33:56 +0100
From:	Jonathan Cameron <jic23@....ac.uk>
To:	Andrew Morton <akpm@...ux-foundation.org>
CC:	yauhen.kharuzhy@...mwad.com, linux-kernel@...r.kernel.org,
	Jeff Mahoney <jeffm@...e.com>,
	Mark Brown <broonie@...nsource.wolfsonmicro.com>,
	Greg Kroah-Hartman <gregkh@...e.de>,
	devel@...verdev.osuosl.org, Sonic Zhang <sonic.adi@...il.com>
Subject: Re: [PATCH] IIO: Fix adding more than one iio device eventset

On 04/08/10 20:48, Andrew Morton wrote:
> On Wed, 07 Apr 2010 19:15:56 +0100
> Jonathan Cameron <jic23@....ac.uk> wrote:
> 
>> Thanks for the patch.  The first bug was fixed by a patch from Sonic Zhang.
>> Andrew Morton picked it up so it is in the mm tree.  Thanks for the report
>> of this particularly horrible bug though as had been there quite a while before
>> Sonic pointed it out!
> 
> hm.  Is it a "horrible bug"?  I had assumed that it was a minor bug and
> had staged the patch for 2.6.35.  Was that a mistake?
> 
It is a bug you will only see if you attempt to bring up two iio devices
with event interfaces at the same time.  I've no idea if anyone has a, non-dev
board where this is happening. If you trigger the bug the second devices probe
will fail. So moderately horrible but the problem is fairly self contained.

By the look of it two people have run into the bug (or spotted the problem during
code review?) so probably worth pushing the fix in sooner rather than later.

Thanks,

Jonathan
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