Re: [PATCH] iio: Fix build error seen if IIO_TRIGGER is defined but IIO_BUFFER is not

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On 03/01/2013 04:15 PM, Denis CIOCCA wrote:
> Ok Thanks.
> 
> Acked-by: Denis Ciocca <denis.ciocca@xxxxxx>
Applied to fixes-togreg branch of iio.git

Thanks,
> 
> 
> Denis
> 
> 
> On 03/01/2013 04:57 PM, Guenter Roeck wrote:
>> If CONFIG_IIO_TRIGGER is defined but CONFIG_IIO_BUFFER is not, the following
>> build error is seen.
>>
>> drivers/iio/common/st_sensors/st_sensors_trigger.c:21:5: error:
>> redefinition of ‘st_sensors_allocate_trigger’
>> In file included from
>> drivers/iio/common/st_sensors/st_sensors_trigger.c:18:0:
>> include/linux/iio/common/st_sensors.h:239:19: note: previous
>> definition of ‘st_sensors_allocate_trigger’ was here
>> drivers/iio/common/st_sensors/st_sensors_trigger.c:65:6: error:
>> redefinition of ‘st_sensors_deallocate_trigger’
>> In file included from
>> drivers/iio/common/st_sensors/st_sensors_trigger.c:18:0:
>> include/linux/iio/common/st_sensors.h:244:20: note: previous
>> definition of ‘st_sensors_deallocate_trigger’ was here
>>
>> This occurs because st_sensors_deallocate_trigger is built if CONFIG_IIO_TRIGGER
>> is defined, but the dummy function is compiled if CONFIG_IIO_BUFFER is defined.
>>
>> Signed-off-by: Guenter Roeck <linux@xxxxxxxxxxxx>
>> ---
>>   include/linux/iio/common/st_sensors.h |    9 ++++++---
>>   1 file changed, 6 insertions(+), 3 deletions(-)
>>
>> diff --git a/include/linux/iio/common/st_sensors.h b/include/linux/iio/common/st_sensors.h
>> index 1f86a97..8bd12be 100644
>> --- a/include/linux/iio/common/st_sensors.h
>> +++ b/include/linux/iio/common/st_sensors.h
>> @@ -227,14 +227,17 @@ struct st_sensor_data {
>>   };
>>
>>   #ifdef CONFIG_IIO_BUFFER
>> +irqreturn_t st_sensors_trigger_handler(int irq, void *p);
>> +
>> +int st_sensors_get_buffer_element(struct iio_dev *indio_dev, u8 *buf);
>> +#endif
>> +
>> +#ifdef CONFIG_IIO_TRIGGER
>>   int st_sensors_allocate_trigger(struct iio_dev *indio_dev,
>>   				const struct iio_trigger_ops *trigger_ops);
>>
>>   void st_sensors_deallocate_trigger(struct iio_dev *indio_dev);
>>
>> -irqreturn_t st_sensors_trigger_handler(int irq, void *p);
>> -
>> -int st_sensors_get_buffer_element(struct iio_dev *indio_dev, u8 *buf);
>>   #else
>>   static inline int st_sensors_allocate_trigger(struct iio_dev *indio_dev,
>>   				const struct iio_trigger_ops *trigger_ops)
>>
> 
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