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Date: Wed, 20 May 2015 10:51:55 -0600
From: Gary Thomas <gary@mlbassoc.com>
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Subject: Re: [PATCH] kernel 3.14.28/gpiolib: Return GPIO logical value, not true value
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On 2015-05-20 10:49, Eric Bénard wrote:
> Le Wed, 20 May 2015 13:34:24 -0300,
> Otavio Salvador <otavio@ossystems.com.br> a écrit :
>
>> On Wed, May 20, 2015 at 12:54 PM, Gary Thomas <gary@mlbassoc.com> wrote:
>>> Previous versions of the kernel returned the logical value of
>>> GPIO signals (i.e. 0 or 1).  This patch restores this behavior.
>>>
>>> Signed-off-by: Gary Thomas <gary@mlbassoc.com>
>>
>> I am not sure this is a correct fix. I tried to find out the commit
>> which changed the behaviour without success.
>>
>> Fabio, is it possible for you to check how mainline is behaving? and
>> more important does it need any fix?
>>
> fixed mainline by :
> 25b35da gpio: generic: clamp retured value to [0,1]
> which is not in 3.4.28

True enough, but this patch won't apply to 3.14.28 as the
code is very different.

-- 
------------------------------------------------------------
Gary Thomas                 |  Consulting for the
MLB Associates              |    Embedded world
------------------------------------------------------------