linux-kernel - Re: [PATCH 4/6] iio: event: Add missing fields in kernel docs

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Date:	Sun, 02 Aug 2015 21:43:01 +0200
From:	Hartmut Knaack <knaack.h@....de>
To:	Jonathan Cameron <jic23@...nel.org>,
	Cristina Opriceana <cristina.opriceana@...il.com>
CC:	lars@...afoo.de, pmeerw@...erw.net, linux-iio@...r.kernel.org,
	linux-kernel@...r.kernel.org, daniel.baluta@...el.com
Subject: Re: [PATCH 4/6] iio: event: Add missing fields in kernel docs

Jonathan Cameron schrieb am 02.08.2015 um 19:33:
> On 24/07/15 14:21, Cristina Opriceana wrote:
>> Fix kernel docs warnings by adding the missing fields,
>> each with its associated description.
>>
>> Signed-off-by: Cristina Opriceana <cristina.opriceana@...il.com>
> Applied.  Thanks
> 
> Jonathan
>> ---
>>  drivers/iio/industrialio-event.c | 6 ++++++
>>  1 file changed, 6 insertions(+)
>>
>> diff --git a/drivers/iio/industrialio-event.c b/drivers/iio/industrialio-event.c
>> index 894d813..b2f63f9 100644
>> --- a/drivers/iio/industrialio-event.c
>> +++ b/drivers/iio/industrialio-event.c
>> @@ -32,6 +32,7 @@
>>   * @dev_attr_list:	list of event interface sysfs attribute
>>   * @flags:		file operations related flags including busy flag.
>>   * @group:		event interface sysfs attribute group
>> + * @read_lock:		lock to protect kfifo read operations
>>   */
>>  struct iio_event_interface {
>>  	wait_queue_head_t	wait;
>> @@ -75,6 +76,11 @@ EXPORT_SYMBOL(iio_push_event);
>>  
>>  /**
>>   * iio_event_poll() - poll the event queue to find out if it has data
>> + * @filep:	File structure pointer to identify the device
>> + * @wait:	Poll table pointer to add the wait queue on
>> + *
>> + * Return: (POLLIN | POLLRDNORM) if data is available for reading
>> + *	   or a negative error code on failure

This can also return 0 if no data is available.

Actually, being unsigned int, the intended negative error code won't
appear - ouch! Any volunteers to address this issue?

>>   */
>>  static unsigned int iio_event_poll(struct file *filep,
>>  			     struct poll_table_struct *wait)
>>
> 
> --
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