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

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Message-ID: <55C06FA8.6030705@metafoo.de>
Date:	Tue, 04 Aug 2015 09:54:16 +0200
From:	Lars-Peter Clausen <lars@...afoo.de>
To:	Pengyu Ma <pengyu.ma@...driver.com>, jic23@...nel.org,
	linux-kernel@...r.kernel.org, linux-iio@...r.kernel.org
Subject: Re: [PATCH V2] iio: declare struct to fix warning

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.

> 
> 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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