linux-kernel - Re: [PATCH V2] iio: declare struct to fix warning

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Message-ID: <CAKv63uvmOP44r4hD1T1cX+kj_5JPP3jSzJv8cCrSf==1___6jQ@mail.gmail.com>
Date:	Tue, 4 Aug 2015 09:58:49 +0200
From:	Crt Mori <cmo@...exis.com>
To:	Pengyu Ma <pengyu.ma@...driver.com>
Cc:	Lars-Peter Clausen <lars@...afoo.de>,
	Johnathan Iain Cameron <jic23@...nel.org>,
	linux-kernel@...r.kernel.org, linux-iio@...r.kernel.org
Subject: Re: [PATCH V2] iio: declare struct to fix warning

On 4 August 2015 at 09:56, Pengyu Ma <pengyu.ma@...driver.com> wrote:
>
>
> On 08/04/2015 03:54 PM, Lars-Peter Clausen wrote:
>>
>> On 08/04/2015 09:52 AM, Pengyu Ma wrote:
>>>
>>> If this patch is fine, could somebody help me to merge into upstream
>>> kernel?
>>
>> It will be merged, don't worry. But things typically take a bit longer
>> than
>> just a single day.
>
> So it's will be merge by patch, no need a pull-request, right?
Correct.
>
> Thanks,
> Pengyu
>
>>> Thanks,
>>> Pengyu
>>>
>>> On 08/03/2015 10:39 AM, Pengyu Ma wrote:
>>>>
>>>> When compile iio related driver the following warning shown:
>>>>
>>>> include/linux/iio/trigger.h:35:34: warning: 'struct iio_trigger'
>>>> declared inside parameter list
>>>>     int (*set_trigger_state)(struct iio_trigger *trig, bool state);
>>>>
>>>> include/linux/iio/trigger.h:38:18: warning: 'struct iio_dev'
>>>> declared inside parameter list
>>>>              struct iio_dev *indio_dev);
>>>>
>>>> 'struct iio_dev' and 'struct iio_trigger' was used before declaration,
>>>> forward declaration for these structs to fix warning.
>>>>
>>>> Signed-off-by: Pengyu Ma <pengyu.ma@...driver.com>
>>>> ---
>>>>    include/linux/iio/trigger.h | 4 ++++
>>>>    1 file changed, 4 insertions(+)
>>>>
>>>> diff --git a/include/linux/iio/trigger.h b/include/linux/iio/trigger.h
>>>> index fa76c79..974cf73 100644
>>>> --- a/include/linux/iio/trigger.h
>>>> +++ b/include/linux/iio/trigger.h
>>>> @@ -18,6 +18,10 @@ struct iio_subirq {
>>>>        bool enabled;
>>>>    };
>>>>    +/* forward declaration */
>>>> +struct iio_dev;
>>>> +struct iio_trigger;
>>>> +
>>>>    /**
>>>>     * struct iio_trigger_ops - operations structure for an iio_trigger.
>>>>     * @owner:        used to monitor usage count of the trigger.
>
>
> --
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