linux-kernel - Re: [PATCH v2 07/22] media: v4l-core add enable/disable source common interfaces

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Message-ID: <201602041429.bpP3FQ3A%fengguang.wu@intel.com>
Date:	Thu, 4 Feb 2016 14:29:06 +0800
From:	kbuild test robot <lkp@...el.com>
To:	Shuah Khan <shuahkh@....samsung.com>
Cc:	kbuild-all@...org, mchehab@....samsung.com, tiwai@...e.com,
	clemens@...isch.de, hans.verkuil@...co.com,
	laurent.pinchart@...asonboard.com, sakari.ailus@...ux.intel.com,
	javier@....samsung.com, Shuah Khan <shuahkh@....samsung.com>,
	pawel@...iak.com, m.szyprowski@...sung.com,
	kyungmin.park@...sung.com, perex@...ex.cz, arnd@...db.de,
	dan.carpenter@...cle.com, tvboxspy@...il.com, crope@....fi,
	ruchandani.tina@...il.com, corbet@....net, chehabrafael@...il.com,
	k.kozlowski@...sung.com, stefanr@...6.in-berlin.de,
	inki.dae@...sung.com, jh1009.sung@...sung.com,
	elfring@...rs.sourceforge.net, prabhakar.csengg@...il.com,
	sw0312.kim@...sung.com, p.zabel@...gutronix.de,
	ricardo.ribalda@...il.com, labbott@...oraproject.org,
	pierre-louis.bossart@...ux.intel.com, ricard.wanderlof@...s.com,
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	normalperson@...t.net, joe@...po.co.uk, linuxbugs@...tgam.net,
	johan@...ud.se, klock.android@...il.com, nenggun.kim@...sung.com,
	j.anaszewski@...sung.com, geliangtang@....com,
	linux-kernel@...r.kernel.org, linux-media@...r.kernel.org,
	linux-api@...r.kernel.org, alsa-devel@...a-project.org
Subject: Re: [PATCH v2 07/22] media: v4l-core add enable/disable source
 common interfaces

Hi Shuah,

[auto build test WARNING on linuxtv-media/master]
[also build test WARNING on next-20160203]
[cannot apply to v4.5-rc2]
[if your patch is applied to the wrong git tree, please drop us a note to help improving the system]

url:    https://github.com/0day-ci/linux/commits/Shuah-Khan/Sharing-media-resources-across-ALSA-and-au0828-drivers/20160204-121414
base:   git://linuxtv.org/media_tree.git master
reproduce: make htmldocs

All warnings (new ones prefixed by >>):

   include/linux/init.h:1: warning: no structured comments found
   kernel/sys.c:1: warning: no structured comments found
   drivers/dma-buf/seqno-fence.c:1: warning: no structured comments found
   drivers/dma-buf/reservation.c:1: warning: no structured comments found
   include/linux/reservation.h:1: warning: no structured comments found
>> include/media/v4l2-mc.h:114: warning: No description found for parameter 'vdev'
   include/media/v4l2-mc.h:128: warning: No description found for parameter 'vdev'
   include/media/media-device.h:357: warning: No description found for parameter 'entity_notify'
   include/media/media-device.h:357: warning: No description found for parameter 'source_priv'
   include/media/media-device.h:357: warning: No description found for parameter 'enable_source'
   include/media/media-device.h:357: warning: No description found for parameter 'disable_source'
   include/media/media-device.h:357: warning: No description found for parameter 'entity_notify'
   include/media/media-device.h:357: warning: No description found for parameter 'source_priv'
   include/media/media-device.h:357: warning: No description found for parameter 'enable_source'
   include/media/media-device.h:357: warning: No description found for parameter 'disable_source'
   include/media/media-entity.h:840: warning: No description found for parameter 'entity'
   include/media/media-entity.h:840: warning: No description found for parameter 'pipe'
   include/media/media-entity.h:860: warning: No description found for parameter 'entity'
   include/linux/spi/spi.h:540: warning: No description found for parameter 'max_transfer_size'

vim +/vdev +114 include/media/v4l2-mc.h

    98	/**
    99	 * v4l_enable_media_source() -	Hold media source for exclusive use
   100	 *				if free
   101	 *
   102	 * @vdev - poniter to struct video_device
   103	 *
   104	 * This interface calls enable_source handler to determine if
   105	 * media source is free for use. The enable_source handler is
   106	 * responsible for checking is the media source is free and
   107	 * start a pipeline between the media source and the media
   108	 * entity associated with the video device. This interface
   109	 * should be called from v4l2-core and dvb-core interfaces
   110	 * that change the source configuration.
   111	 *
   112	 * Return: returns zero on success or a negative error code.
   113	 */
 > 114	int v4l_enable_media_source(struct video_device *vdev);
   115	
   116	/**
   117	 * v4l_disable_media_source() -	Release media source
   118	 *
   119	 * @vdev - poniter to struct video_device
   120	 *
   121	 * This interface calls disable_source handler to release
   122	 * the media source. The disable_source handler stops the

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