Re: [PATCH v3 4/4] uvcvideo: add a metadata device node

From: kbuild test robot <lkp@intel.com>
To: Guennadi Liakhovetski <guennadi.liakhovetski@intel.com>
Cc: kbuild-all@01.org, linux-media@vger.kernel.org,
	Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
	Hans Verkuil <hverkuil@xs4all.nl>,
	Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Subject: Re: [PATCH v3 4/4] uvcvideo: add a metadata device node
Date: Tue, 13 Dec 2016 02:56:37 +0800	[thread overview]
Message-ID: <201612130212.GceeJ0Pc%fengguang.wu@intel.com> (raw)
In-Reply-To: <1481541412-1186-5-git-send-email-guennadi.liakhovetski@intel.com>

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Hi Guennadi,

[auto build test ERROR on linuxtv-media/master]
[also build test ERROR on v4.9 next-20161209]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Guennadi-Liakhovetski/uvcvideo-metadata-device-node/20161213-004101
base:   git://linuxtv.org/media_tree.git master
config: x86_64-randconfig-i0-12120350 (attached as .config)
compiler: gcc-4.9 (Debian 4.9.4-2) 4.9.4
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All error/warnings (new ones prefixed by >>):

   drivers/media/usb/uvc/uvc_metadata.c: In function 'meta_v4l2_get_format':
   drivers/media/usb/uvc/uvc_metadata.c:59:45: error: 'union <anonymous>' has no member named 'meta'
     struct v4l2_meta_format *fmt = &format->fmt.meta;
                                                ^
>> drivers/media/usb/uvc/uvc_metadata.c:64:24: error: dereferencing pointer to incomplete type
     memset(fmt, 0, sizeof(*fmt));
                           ^
   drivers/media/usb/uvc/uvc_metadata.c:66:5: error: dereferencing pointer to incomplete type
     fmt->dataformat = V4L2_META_FMT_UVC;
        ^
   drivers/media/usb/uvc/uvc_metadata.c:67:5: error: dereferencing pointer to incomplete type
     fmt->buffersize = UVC_PAYLOAD_HEADER_MAX_SIZE;
        ^
   drivers/media/usb/uvc/uvc_metadata.c: At top level:
   drivers/media/usb/uvc/uvc_metadata.c:74:2: error: unknown field 'vidioc_g_fmt_meta_cap' specified in initializer
     .vidioc_g_fmt_meta_cap  = meta_v4l2_get_format,
     ^
>> drivers/media/usb/uvc/uvc_metadata.c:74:2: warning: initialization from incompatible pointer type
   drivers/media/usb/uvc/uvc_metadata.c:74:2: warning: (near initialization for 'uvc_meta_ioctl_ops.vidioc_enum_fmt_vid_cap')
   drivers/media/usb/uvc/uvc_metadata.c:75:2: error: unknown field 'vidioc_s_fmt_meta_cap' specified in initializer
     .vidioc_s_fmt_meta_cap  = meta_v4l2_get_format,
     ^
   drivers/media/usb/uvc/uvc_metadata.c:75:2: warning: initialization from incompatible pointer type
   drivers/media/usb/uvc/uvc_metadata.c:75:2: warning: (near initialization for 'uvc_meta_ioctl_ops.vidioc_enum_fmt_vid_overlay')
   drivers/media/usb/uvc/uvc_metadata.c:76:2: error: unknown field 'vidioc_try_fmt_meta_cap' specified in initializer
     .vidioc_try_fmt_meta_cap = meta_v4l2_get_format,
     ^
   drivers/media/usb/uvc/uvc_metadata.c:76:2: warning: initialization from incompatible pointer type
   drivers/media/usb/uvc/uvc_metadata.c:76:2: warning: (near initialization for 'uvc_meta_ioctl_ops.vidioc_enum_fmt_vid_out')
   drivers/media/usb/uvc/uvc_metadata.c: In function 'uvc_meta_register':
   drivers/media/usb/uvc/uvc_metadata.c:135:22: error: 'V4L2_CAP_META_CAPTURE' undeclared (first use in this function)
     vdev->device_caps = V4L2_CAP_META_CAPTURE | V4L2_CAP_STREAMING;
                         ^
   drivers/media/usb/uvc/uvc_metadata.c:135:22: note: each undeclared identifier is reported only once for each function it appears in
   drivers/media/usb/uvc/uvc_metadata.c:141:16: error: 'V4L2_BUF_TYPE_META_CAPTURE' undeclared (first use in this function)
     queue->type = V4L2_BUF_TYPE_META_CAPTURE;
                   ^

vim +64 drivers/media/usb/uvc/uvc_metadata.c

    53	}
    54	
    55	static int meta_v4l2_get_format(struct file *file, void *fh,
    56					struct v4l2_format *format)
    57	{
    58		struct v4l2_fh *vfh = file->private_data;
  > 59		struct v4l2_meta_format *fmt = &format->fmt.meta;
    60	
    61		if (format->type != vfh->vdev->queue->type)
    62			return -EINVAL;
    63	
  > 64		memset(fmt, 0, sizeof(*fmt));
    65	
    66		fmt->dataformat = V4L2_META_FMT_UVC;
  > 67		fmt->buffersize = UVC_PAYLOAD_HEADER_MAX_SIZE;
    68	
    69		return 0;
    70	}
    71	
    72	static const struct v4l2_ioctl_ops uvc_meta_ioctl_ops = {
    73		.vidioc_querycap		= meta_v4l2_querycap,
  > 74		.vidioc_g_fmt_meta_cap		= meta_v4l2_get_format,
    75		.vidioc_s_fmt_meta_cap		= meta_v4l2_get_format,
    76		.vidioc_try_fmt_meta_cap	= meta_v4l2_get_format,
    77		.vidioc_reqbufs			= vb2_ioctl_reqbufs,

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