linux-kernel - Re: [PATCH] IIO: stm32: Remove quadrature related functions from trigger driver

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Date:   Sun, 14 Jul 2019 15:32:33 +0000
From:   Benjamin GAIGNARD <benjamin.gaignard@...com>
To:     Jonathan Cameron <jic23@...nel.org>,
        William Breathitt Gray <vilhelm.gray@...il.com>
CC:     Benjamin Gaignard <benjamin.gaignard@...aro.org>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Alexandre TORGUE <alexandre.torgue@...com>,
        "linux-iio@...r.kernel.org" <linux-iio@...r.kernel.org>,
        "Linux Kernel Mailing List" <linux-kernel@...r.kernel.org>,
        Peter Meerwald-Stadler <pmeerw@...erw.net>,
        Hartmut Knaack <knaack.h@....de>,
        Fabrice GASNIER <fabrice.gasnier@...com>,
        "linux-stm32@...md-mailman.stormreply.com" 
        <linux-stm32@...md-mailman.stormreply.com>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH] IIO: stm32: Remove quadrature related functions from
 trigger driver

On 7/14/19 12:09 PM, Jonathan Cameron wrote:
> On Thu, 11 Jul 2019 21:16:20 +0900
> William Breathitt Gray <vilhelm.gray@...il.com> wrote:
>
>> On Thu, Jul 11, 2019 at 02:12:27PM +0200, Benjamin Gaignard wrote:
>>> Le jeu. 11 juil. 2019 à 13:51, William Breathitt Gray
>>> <vilhelm.gray@...il.com> a écrit :
>>>> On Tue, May 07, 2019 at 11:12:24AM +0200, Benjamin Gaignard wrote:
>>>>> Quadrature feature is now hosted on it own framework.
>>>>> Remove quadrature related code from stm32-trigger driver to avoid
>>>>> code duplication and simplify the ABI.
>>>>>
>>>>> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@...com>
>>>> What is the status of this patch? Are there any objections currently for
>>>> its inclusion?
>>> You were the only one asking for more details about it :-)
>>> If you agree I think that Jonathan can merge it.
>>>
>>> Benjamin
>>>> William Breathitt Gray
>>>>
>>>> _______________________________________________
>>>> linux-arm-kernel mailing list
>>>> linux-arm-kernel@...ts.infradead.org
>>>> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
>> Yes, Jonathan please merge this if you have no objections, I hadn't
>> realized I was delaying it.
>>
>> Thank you,
>>
>> William Breathitt Gray
> One last thing...  This seems to be a userspace ABI change.  What
> are our potential issues with users of this ABI?
>
> It's not that costly to keep the code, though dropping the docs or
> putting a depreciated note in them is probably a good idea.  Hence
> I'm not totally convinced the risk of a regression is worth it.

As far I know nobody use this interface yet for me there is no risk to 
remove this code.

Benjamin

>
> If we think it's the sort of change no one will notice, then
> fair enough we'll give it a go and cross our fingers.
>
> Thanks,
>
> Jonathan
>
>

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